feat: add metadata screen support for local library items

- TrackMetadataScreen now accepts both DownloadHistoryItem and LocalLibraryItem
- Tapping local library tracks in Library tab opens metadata screen
- Shows extracted metadata from audio files (artist, album, track number, etc)
- Supports local cover art display from extracted covers

.github/workflows/release.yml

@@ -71,7 +71,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: "1.21"
+          go-version: "1.25"
           cache-dependency-path: go_backend/go.sum
 
       # Cache Gradle for faster builds
@@ -174,7 +174,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: "1.21"
+          go-version: "1.25"
           cache-dependency-path: go_backend/go.sum
 
       # Cache CocoaPods
@@ -194,7 +194,7 @@ jobs:
         working-directory: go_backend
         run: |
           mkdir -p ../ios/Frameworks
-          gomobile bind -target=ios -o ../ios/Frameworks/Gobackend.xcframework .
+          gomobile bind -target=ios -tags ios -o ../ios/Frameworks/Gobackend.xcframework .
         env:
           CGO_ENABLED: 1
 
@@ -249,23 +249,6 @@ jobs:
           channel: "stable"
           cache: true
 
-      # Swap pubspec for iOS build (includes ffmpeg_kit_flutter)
-      - name: Use iOS pubspec with FFmpeg plugin
-        run: |
-          cp pubspec.yaml pubspec_android_backup.yaml
-          cp pubspec_ios.yaml pubspec.yaml
-          echo "Swapped to iOS pubspec with ffmpeg_kit_flutter"
-
-      # Swap FFmpeg service for iOS
-      - name: Use iOS FFmpeg service
-        run: |
-          cp lib/services/ffmpeg_service.dart lib/services/ffmpeg_service_android.dart
-          cp build_assets/ffmpeg_service_ios.dart lib/services/ffmpeg_service.dart
-          # Update class name in the swapped file
-          sed -i '' 's/FFmpegServiceIOS/FFmpegService/g' lib/services/ffmpeg_service.dart
-          sed -i '' 's/FFmpegResultIOS/FFmpegResult/g' lib/services/ffmpeg_service.dart
-          echo "Swapped to iOS FFmpeg service"
-
       - name: Get Flutter dependencies
         run: flutter pub get
 
@@ -441,7 +424,11 @@ jobs:
           VERSION_NUM=${VERSION#v}
 
           # Extract changelog, limit to ~2500 chars for Telegram (4096 limit minus message overhead)
-          FULL_CHANGELOG=$(sed -n "/^## \[$VERSION_NUM\]/,/^## \[/{ /^## \[$VERSION_NUM\]/d; /^## \[/d; p; }" CHANGELOG.md | sed '/^---$/d')
+          # Use tr -d '\r' to handle CRLF line endings from Windows
+          FULL_CHANGELOG=$(cat CHANGELOG.md | tr -d '\r' | sed -n "/^## \[$VERSION_NUM\]/,/^## \[/{ /^## \[$VERSION_NUM\]/d; /^## \[/d; p; }" | sed '/^---$/d')
+          
+          echo "DEBUG: Extracted changelog length: ${#FULL_CHANGELOG}"
+          echo "DEBUG: First 200 chars: ${FULL_CHANGELOG:0:200}"
           
           if [ -z "$FULL_CHANGELOG" ]; then
             CHANGELOG="See release notes on GitHub for details."
@@ -451,7 +438,9 @@ jobs:
             # - `code` → <code>code</code>
             # - ### Header → <b>Header</b>
             # - Escape HTML special chars first
+            # - Remove > blockquote prefix
             CHANGELOG=$(echo "$FULL_CHANGELOG" | \
+              sed 's/^> //' | \
               sed 's/&/\&amp;/g' | \
               sed 's/</\&lt;/g' | \
               sed 's/>/\&gt;/g' | \
@@ -473,6 +462,8 @@ jobs:
           fi
 
           echo "$CHANGELOG" > /tmp/changelog.txt
+          echo "DEBUG: Final changelog:"
+          cat /tmp/changelog.txt
 
       - name: Send to Telegram Channel
         env:
@@ -499,11 +490,13 @@ jobs:
           MESSAGE=$(cat /tmp/telegram_message.txt)
 
           # Send message first (using HTML parse mode)
+          # Use --data-urlencode for proper encoding of special chars (+, &, etc.)
+          # Use || true to ensure file uploads continue even if message fails
           curl -s -X POST "https://api.telegram.org/bot${TELEGRAM_BOT_TOKEN}/sendMessage" \
-            -d chat_id="${TELEGRAM_CHANNEL_ID}" \
-            -d text="${MESSAGE}" \
-            -d parse_mode="HTML" \
-            -d disable_web_page_preview="true"
+            --data-urlencode "chat_id=${TELEGRAM_CHANNEL_ID}" \
+            --data-urlencode "text=${MESSAGE}" \
+            --data-urlencode "parse_mode=HTML" \
+            --data-urlencode "disable_web_page_preview=true" || true
 
           # Upload arm64 APK to channel
           if [ -f "$ARM64_APK" ]; then

.gitignore

@@ -72,3 +72,4 @@ flutter_*.log
 
 # Development tools
 tool/
+.claude/settings.local.json

CHANGELOG.md

@@ -1,5 +1,133 @@
 # Changelog
 
+## [3.4.0] - 2026-02-03
+
+### Highlights
+
+- **Local Library Scanning** ([#117](https://github.com/zarzet/SpotiFLAC-Mobile/issues/117)): Scan existing music collection to detect duplicates (FLAC, M4A, MP3, Opus, OGG)
+- **Duplicate Detection** ([#117](https://github.com/zarzet/SpotiFLAC-Mobile/issues/117)): "In Library" badge on tracks matching by ISRC or track name + artist
+- **Unified Library Tab**: History renamed to Library, shows Downloaded + Local Library tracks with source badges
+
+### Added
+
+- Local Album Screen with cover art, disc grouping, and selection mode
+- Albums tab shows local library albums with folder icon badge
+- Singles filter includes local library singles
+- Advanced library filters: Source, Quality, Format, Date
+- Cover art extraction from embedded tags (FLAC, MP3, Opus/Ogg)
+- "Already in Library" notification when downloading existing tracks
+- Spotify secrets now stored in secure storage (`flutter_secure_storage`)
+- **Multi-Service Link Support**: Share links from Deezer, Tidal, and YouTube Music (in addition to Spotify)
+  - Deezer: Full support for track, album, playlist, artist links
+  - Tidal: Track links converted via SongLink to Spotify/Deezer for metadata
+  - YouTube Music: Handled via ytmusic extension URL handler
+- Local library tracks now open metadata screen on tap
+
+### Changed
+
+- Extension HTTP sandbox enforces HTTPS and blocks private IPs
+- Extension file sandbox validates paths with boundary-safe checks
+
+### Fixed
+
+- Search filter bar now only appears after results load, not during loading
+- MP3/Ogg metadata parsing (ID3v2 extended headers, Ogg packet reassembly)
+- Library scan metadata (ISRC, disc number, release date)
+- Cover cache robustness (size + mtime cache key)
+- Local library selection and delete in list/grid views
+- Albums/Singles count includes local library items
+
+---
+
+## [3.3.6] - 2026-02-02
+
+### Added
+
+- **WiFi-Only Download Mode**: Pause downloads on mobile data, auto-resume on WiFi (Settings > Download > Download Network)
+- Added `connectivity_plus: ^6.0.3` dependency
+
+---
+
+## [3.3.5] - 2026-02-01
+
+Same as 3.3.1 but fixes crash issues caused by FFmpeg.
+
+### Added
+
+- **Export Failed Downloads**: Export failed downloads to TXT file for easy lookup on other platforms
+- **Auto-Export Setting**: Option to automatically export failed downloads when queue finishes
+
+### Fixed
+
+- **FFmpeg Crash**: Fixed crash issues during M4A to MP3/Opus conversion
+- **Service Selection Ignored**: Fixed bug where selecting Qobuz/Amazon from service picker was ignored and always used Tidal instead
+- **iOS iCloud Drive Permission Error**: Block iCloud Drive folder selection on iOS (Go backend cannot access iCloud due to sandboxing)
+
+### Changed
+
+- **Amazon Fallback Only**: Amazon Music is now grayed out in service picker and can only be used as fallback provider
+
+---
+
+## [3.3.1] - 2026-02-01
+
+### Added
+
+- **Clear All Queue Button**: Cancel all queued downloads with one tap ([#96](https://github.com/zarzet/SpotiFLAC-Mobile/issues/96))
+- **IDHS Fallback**: Fallback link resolver when SongLink fails (rate limited 8 req/min)
+- **Lossy Bitrate Options**: MP3 (320/256/192/128kbps), Opus (128/96/64kbps)
+- **Search Filters**: Filter results by type (Tracks, Artists, Albums, Playlists)
+- **Album/Playlist Search**: Deezer search now includes albums and playlists
+- **New Languages**: Turkish (Kaan, BedirhanGltkn), Japanese (Re*Index.(ot_inc))
+- **Optional All Files Access**: Android 13+ no longer requires full storage access; enable in Settings if needed
+- **Improved VPN Compatibility**: Better HTTP/2 support for users behind VPN or restricted networks
+
+### Changed
+
+- **Amazon Download API**: Switched to AfkarXYZ API
+- **Qobuz Download API**: Added Jumo API as fallback
+- **Search Results**: Reduced artist limit from 5 to 2
+
+### Fixed
+
+- **MP3 Download Error 403**: Fixed 403 Forbidden error when downloading MP3 files ([#108](https://github.com/zarzet/SpotiFLAC-Mobile/issues/108))
+- **Opus Cover Art**: Implemented METADATA_BLOCK_PICTURE for proper cover embedding
+- **Deezer Pagination**: Fixed >25 tracks only showing first 25 ([#112](https://github.com/zarzet/SpotiFLAC-Mobile/issues/112))
+- **Duplicate Embed Lyrics Setting**: Removed from Options page ([#110](https://github.com/zarzet/SpotiFLAC-Mobile/issues/110))
+
+---
+
+## [3.2.1] - 2026-01-22
+
+### Added
+
+- **Artist/Album + Singles Folder Structure**: Singles go inside artist folder (`Artist/Album/`, `Artist/Singles/`)
+- **Embed Lyrics Button**: Manually embed online lyrics into tracks from Track Info screen (preserves synced timestamps)
+- **Pause/Resume Button**: Added pause and resume controls next to "Downloading" header in History screen
+- **Instrumental Detection**: Tracks marked as instrumental on lrclib.net now show "Instrumental track" instead of "Lyrics not available"
+
+### Fixed
+
+- **Lyrics**: Multi-artist tracks now search by primary artist first, then full string
+- **Lyrics**: Metadata tags (`[ti:...]`, `[ar:...]`, `[by:...]`) no longer shown in display
+- **Lyrics**: Embed button now correctly appears for tracks with online lyrics
+- **Lyrics**: Manual embed preserves original timestamps instead of plain text
+- **iOS**: Fixed "File not found" after 3.1.x → 3.2.0 update (container UUID migration)
+- **Home Feed**: Greeting now uses device local time
+- **Deezer**: Track position fallback to index+1 when API returns 0
+- **Localization**: Fixed 16 ICU plural syntax warnings in Spanish & Portuguese
+
+### Performance
+
+- **Home Feed**: Precomputed Quick Picks section flag and reduced per-page allocations; explore state now watched by field to cut rebuilds
+- **Home Recent**: Cached recent-access aggregation and limited list allocations for recent downloads
+- **Settings/Theme/Recent**: Cached SharedPreferences instance to avoid repeated `getInstance()` calls
+- **History/DB**: Batched iOS path migration updates to reduce write overhead
+- **Download Queue**: Reduced polling allocations and avoided double-load scheduling for history
+- **Misc**: Precompiled regex in share intent, update dialog, extensions error parsing, log analysis, and LRC cleanup; faster palette cache hits and log filtering
+
+---
+
 ## [3.2.0] - 2026-01-22
 
 > **Note:** Starting from v3.2.0, changelogs will be concise.
@@ -51,31 +179,26 @@
   - Perfect for players like Samsung Music that prefer external .lrc files
   - LRC files include metadata headers (title, artist, by:SpotiFLAC-Mobile)
   - Works with all download services (Tidal, Qobuz, Amazon)
-
 - **CSV Import Quality Selection**: Choose audio quality when importing CSV playlists
   - Quality picker now appears before adding CSV tracks to download queue
   - Select between FLAC qualities (Lossless, Hi-Res, Hi-Res Max) or MP3
   - Respects "Ask quality before download" setting - uses default quality if disabled
-
   - **Persistent Cover Image Cache**: Album/track cover images now cached to persistent storage instead of temporary directory
   - Cover images no longer disappear when app is closed or device restarts
   - Cache stored in `app_flutter/cover_cache/` directory (not cleared by system)
   - Maximum 1000 images cached for up to 365 days
   - Covers are cached when displayed in History, Home, Album, Artist, or any other screen
   - New `CoverCacheManager` service with `clearCache()` and `getStats()` methods for future cache management
-
 - **Extended Metadata from Deezer Enrichment**: Track downloads now include label, copyright, and genre metadata from Deezer
   - New fields in `ExtTrackMetadata`: `label`, `copyright`, `genre`
   - Metadata fetched during `enrichTrack()` via Deezer album API
   - Embedded as FLAC Vorbis comments: `GENRE`, `ORGANIZATION` (label), `COPYRIGHT`
   - Works for both extension downloads and built-in provider downloads (Tidal, Qobuz, Amazon)
-
 - **Track Metadata Screen Extended Info**: Genre, label, and copyright now displayed in track metadata screen
   - Added `genre`, `label`, `copyright` fields to `DownloadHistoryItem` model
   - Metadata is stored in download history and persists across app restarts
   - New localization strings: `trackGenre`, `trackLabel`, `trackCopyright`
-
-- **`utils.randomUserAgent()` for Extensions**: New utility function for extensions to get random browser User-Agent strings
+- `**utils.randomUserAgent()` for Extensions**: New utility function for extensions to get random browser User-Agent strings
   - Returns modern Chrome User-Agent format: `Chrome/{120-145}.0.{6000-7499}.{100-299}` with `Windows NT 10.0`
   - Useful for extensions that need to rotate User-Agents to avoid detection
 
@@ -84,7 +207,6 @@
 - **Portuguese Language Bug**: Fixed locale parsing for languages with country codes (e.g., pt_PT, es_ES)
   - App now correctly loads Portuguese and Spanish translations
   - Updated Portuguese label to "Português (Brasil)"
-
 - **VM Race Condition Panic**: Fixed `panic during execution: runtime error: index out of range [-2]` crash when switching search providers
   - Root cause: Goja VM was being accessed concurrently by multiple goroutines without synchronization
   - Added `VMMu sync.Mutex` to `LoadedExtension` struct
@@ -93,16 +215,13 @@
     - `EnrichTrack`, `CheckAvailability`, `GetDownloadURL`, `Download`
     - `CustomSearch`, `HandleURL`, `MatchTrack`, `PostProcess`
   - Prevents race conditions when rapidly switching between extension search providers
-
 - **Tidal Release Date Fallback**: Fixed missing release date in FLAC metadata when downloading from Tidal
   - Now uses Tidal API's release date when `req.ReleaseDate` is empty
   - Ensures release date is always embedded in downloaded files
-
 - **Extended Metadata for M4A→FLAC Conversion**: Fixed genre, label, and copyright not being embedded when converting Amazon M4A to FLAC
   - Flutter now extracts extended metadata from Go backend response
   - Passes `genre`, `label`, `copyright` parameters to `_embedMetadataAndCover()`
   - Tags correctly embedded during FFmpeg conversion
-
 - **Extended Metadata for MP3 Conversion**: Genre, label, and copyright now embedded in MP3 files when converting from FLAC
   - Added `genre`, `label`, `copyright` parameters to `_embedMetadataToMp3()`
   - Tags embedded as ID3v2: `GENRE`, `ORGANIZATION` (label), `COPYRIGHT`
@@ -163,7 +282,6 @@
   - `go_backend/httputil.go`: Updated `getRandomUserAgent()` to use modern Chrome versions
   - `go_backend/tidal.go`: Added release date fallback logic
   - `go_backend/exports.go`: Added `Genre`, `Label`, `Copyright` fields to `DownloadResponse`
-
 - **Flutter Changes**:
   - `lib/services/cover_cache_manager.dart`: New persistent cache manager for cover images (365 days, 1000 images max)
   - `lib/widgets/cached_cover_image.dart`: Wrapper widget for CachedNetworkImage with persistent cache
@@ -188,7 +306,6 @@
   - Spanish: Credits 125 ([@credits125](https://crowdin.com/profile/credits125))
   - Portuguese: Pedro Marcondes ([@justapedro](https://crowdin.com/profile/justapedro))
   - Russian: Владислав ([@odinokiy_kot](https://crowdin.com/profile/odinokiy_kot))
-
 - **Quick Search Provider Switcher** ([#76](https://github.com/zarzet/SpotiFLAC-Mobile/issues/76)): Dropdown menu in search bar for instant provider switching
   - Tap the search icon to reveal a dropdown menu with all available search providers
   - Shows default provider (Deezer based on metadata source setting) at the top
@@ -198,56 +315,46 @@
   - Search hint text updates immediately when switching providers
   - Re-triggers search automatically if there's existing text in the search bar
   - Eliminates need to navigate to Settings > Extensions > Search Provider
-
 - **Extension Button Setting Type** ([#74](https://github.com/zarzet/SpotiFLAC-Mobile/issues/74)): New setting type for extension actions
   - Extensions can define `button` type in manifest settings
   - Triggers JavaScript function when tapped (e.g., start OAuth flow)
   - Useful for authentication, manual sync, or any custom action
-
 - **Genre & Label Metadata** ([#75](https://github.com/zarzet/SpotiFLAC-Mobile/issues/75)): Downloaded tracks now include genre and record label information
   - Fetches genre and label from Deezer album API for each track
   - Embeds GENRE, ORGANIZATION (label), and COPYRIGHT tags into FLAC files
   - Works automatically when Deezer track ID is available (via ISRC matching)
   - Supports all download services (Tidal, Qobuz, Amazon) and extension downloads
-
 - **MP3 Quality Option** ([#69](https://github.com/zarzet/SpotiFLAC-Mobile/issues/69)): Optional MP3 download format with FLAC-to-MP3 conversion
   - New "Enable MP3 Option" toggle in Settings > Download > Audio Quality
   - When enabled, MP3 (320kbps) appears as a quality option alongside FLAC options
   - Available in both the quality picker dialog and default quality settings
   - Works with all services (Tidal, Qobuz, Amazon) and extensions
-
 - **MP3 Metadata Embedding**: Full metadata support for MP3 files
   - Cover art embedded using ID3v2 tags
   - Synced lyrics embedded (fetched from lrclib.net)
   - All metadata preserved: title, artist, album, album artist, track/disc number, date, ISRC
   - Automatic tag conversion from Vorbis comments (FLAC) to ID3v2 (MP3)
-
 - **Dominant Color Header**: Album, Playlist, Downloaded Album, and Track Metadata screens now feature dynamic header backgrounds
   - Extracts dominant color from cover art using `palette_generator`
   - Creates a gradient from dominant color to theme surface color
   - Smooth 500ms color transition animation
-
 - **Larger Cover Art**: Cover images on detail screens are now 50% of screen width (previously 140px fixed)
   - More prominent album artwork display
   - Larger shadow and rounded corners (20px radius)
   - Higher resolution cover caching
-
 - **Sticky Title**: Title appears in AppBar when scrolling past the info card
   - Smooth fade-in animation (200ms) when scrolling down
   - Title hidden when header is expanded (shows in info card instead)
   - AppBar uses theme color (surface) for clean, native look
   - Works on Album, Playlist, Downloaded Album, Track Metadata, and Artist screens
-
 - **Artist Name in Album Screen**: Album info card now displays artist name below album title
   - Extracted from first track's artist metadata
   - Styled with `onSurfaceVariant` color for visual hierarchy
-
 - **Disc Separation for Multi-Disc Albums** ([#70](https://github.com/zarzet/SpotiFLAC-Mobile/issues/70)): Downloaded albums with multiple discs now display tracks grouped by disc
   - Visual disc separator header showing "Disc 1", "Disc 2", etc.
   - Tracks sorted by disc number first, then by track number
   - Single-disc albums display normally without separators
   - Fixes confusion when albums have duplicate track numbers across discs
-
 - **Album Grouping in Recents** ([#70](https://github.com/zarzet/SpotiFLAC-Mobile/issues/70)): Downloads now show as albums instead of individual tracks in the Recent section
   - Prevents flooding the recents list when downloading full albums
   - Groups tracks by album name and artist
@@ -260,7 +367,6 @@
   - MP3 files now saved in the same folder as FLAC (no separate MP3 subfolder)
   - Original FLAC file automatically deleted after successful conversion
   - New `embedMetadataToMp3()` method for MP3-specific tag embedding
-
 - **Sticky Header Theme Integration**: AppBar background uses `colorScheme.surface` instead of dominant color when collapsed
   - Dark theme: Black background with white text
   - Light theme: White background with black text
@@ -272,12 +378,10 @@
   - MP3 files now show "320kbps" instead of FLAC's bit depth/sample rate
   - History no longer stores FLAC audio specs for converted MP3 files
   - Both File Info badges and metadata grid show correct MP3 quality
-
 - **Empty Catch Blocks**: Fixed analyzer warnings for empty catch blocks
   - `download_queue_provider.dart`: Added comments explaining why polling errors are silently ignored
   - `track_provider.dart`: Added comments explaining why availability check errors are silently ignored
   - `ffmpeg_service.dart`: Added proper error logging for temp file cleanup failures
-
 - **Russian Plural Forms**: Fixed ICU syntax warnings in Russian localization
   - Removed redundant `=1` clauses that were overriding `one` plural category
   - Affected 10 plural strings including track counts and delete confirmations
@@ -297,24 +401,20 @@
   - Thread-safe cache with automatic expiration
   - Cache key based on artist, track, and duration
   - Log indicator shows "(cached)" when lyrics are served from cache
-
 - **Lyrics Duration Matching**: Improved lyrics accuracy with duration-based matching
   - Compares track duration with lrclib.net results
   - 10-second tolerance to handle version differences (radio edit, remaster, etc.)
   - Prioritizes synced lyrics over plain text when duration matches
   - Falls back gracefully if no duration match found
-
 - **Deezer Cover Art Upgrade**: Cover art from Deezer CDN now automatically upgraded to maximum quality
   - Detects Deezer CDN URLs (`cdn-images.dzcdn.net`)
   - Upgrades cover resolution to 1800x1800 (max available)
   - Works alongside existing cover upgrade
-
 - **Live Search for Extensions**: Search-as-you-type functionality for extension search
   - 800ms debounce delay to prevent excessive API calls
   - Minimum 3 characters required before searching
   - Concurrency control to prevent race conditions in extension runtime
   - Queues pending searches if a search is already in progress
-
 - **Russian Language Support**: Added Russian (Русский) translation - 99% complete
   - Translated via Crowdin community contributions
   - Covers all UI elements, settings, and error messages
@@ -325,12 +425,10 @@
   - Added per-directory build lock using `sync.Map` and `sync.Mutex`
   - Double-check locking pattern ensures index is built only once
   - Significantly improves performance during CSV import with many tracks
-
 - **Queue Tab Scroll Exception**: Fixed Flutter rendering exception with NestedScrollView
   - Disabled Material 3 stretch overscroll indicator that caused `_StretchController` assertion
   - Wrapped NestedScrollView with ScrollConfiguration to prevent `setState during build` errors
   - Issue was especially noticeable during rapid queue updates (CSV import)
-
 - **CSV Import**: Fixed CSV export not being parsed correctly
   - Added support for `Artist Name(s)` header (with parentheses)
   - Added support for `Track URI` header for track IDs
@@ -397,4 +495,4 @@ SpotiFLAC 3.0 introduces a powerful extension system that allows third-party int
 
 ---
 
-*For older versions, see [GitHub Releases](https://github.com/zarzet/SpotiFLAC-Mobile/releases)*
+*For older versions, see [GitHub Releases*](https://github.com/zarzet/SpotiFLAC-Mobile/releases)

README.md

@@ -1,5 +1,5 @@
-[![GitHub All Releases](https://img.shields.io/github/downloads/zarzet/SpotiFLAC-Mobile/total?style=for-the-badge)](https://github.com/zarzet/SpotiFLAC-Mobile/releases)
-[![VirusTotal](https://img.shields.io/badge/VirusTotal-Safe-brightgreen?style=for-the-badge&logo=virustotal)](https://www.virustotal.com/gui/file/3257155286587a3596ad5d4380d4576a684aa3d37a5b19a615914a845fbe57f3)
+[![GitHub All Releases](https://img.shields.io/github/downloads/zarzet/SpotiFLAC-Mobile/total?style=for-the-badge&refresh=1)](https://github.com/zarzet/SpotiFLAC-Mobile/releases)
+[![VirusTotal](https://img.shields.io/badge/VirusTotal-Safe-brightgreen?style=for-the-badge&logo=virustotal)](https://www.virustotal.com/gui/file/516142f029a4f3642a899832a6f600acf07040170a98c106cd03222cf584d9a3)
 [![Crowdin](https://img.shields.io/badge/HELP%20TRANSLATE%20ON-CROWDIN-%2321252b?style=for-the-badge&logo=crowdin)](https://crowdin.com/project/spotiflac-mobile)
 
 <div align="center">
@@ -52,8 +52,6 @@ Want to create your own extension? Check out the [Extension Development Guide](h
 ### [SpotiFLAC (Desktop)](https://github.com/afkarxyz/SpotiFLAC)
 Download music in true lossless FLAC from Tidal, Qobuz & Amazon Music for Windows, macOS & Linux
 
-> **Note:** Currently unavailable because the GitHub account is suspended. Alternatively, use [SpotiFLAC-Next](https://github.com/spotiverse/SpotiFLAC-Next) until the original is restored.
-
 ## Telegram
 
 <p align="center">
@@ -61,7 +59,7 @@ Download music in true lossless FLAC from Tidal, Qobuz & Amazon Music for Window
     <img src="https://img.shields.io/badge/Telegram-Channel-2CA5E0?style=for-the-badge&logo=telegram&logoColor=white" alt="Telegram Channel">
   </a>
 
-  <a href="https://t.me/spotiflacchat">
+  <a href="https://t.me/spotiflac_chat">
     <img src="https://img.shields.io/badge/Telegram-Community-2CA5E0?style=for-the-badge&logo=telegram&logoColor=white" alt="Telegram Community">
   </a>
 </p>
@@ -86,6 +84,14 @@ A: Yes, the app is open source and you can verify the code yourself. Each releas
 **Q: Why is download not working in my country?**  
 A: Some countries have restricted access to certain streaming service APIs. If downloads are failing, try using a VPN to connect through a different region.
 
+
+### Want to support SpotiFLAC-Mobile?
+
+_If this software is useful and brings you value, consider supporting the project by buying me a coffee. Your support helps keep development going._
+
+[![Ko-fi](https://ko-fi.com/img/githubbutton_sm.svg)](https://ko-fi.com/zarzet) <a href="https://www.buymeacoffee.com/zarzet" target="_blank"><img src="https://cdn.buymeacoffee.com/buttons/v2/default-yellow.png" alt="Buy Me A Coffee" style="height: 40px !important;width: 150px !important;" ></a>
+
+
 ## Disclaimer
 
 This project is for **educational and private use only**. The developer does not condone or encourage copyright infringement.
@@ -100,3 +106,8 @@ You are solely responsible for:
 3. Any legal consequences resulting from the misuse of this tool.
 
 The software is provided "as is", without warranty of any kind. The author assumes no liability for any bans, damages, or legal issues arising from its use.
+
+
+> [!TIP]
+>
+> **Star Us**, You will receive all release notifications from GitHub without any delay ~

android/app/proguard-rules.pro

@@ -5,6 +5,7 @@
 -keep class io.flutter.view.** { *; }
 -keep class io.flutter.** { *; }
 -keep class io.flutter.plugins.** { *; }
+-keep class io.flutter.embedding.** { *; }
 
 # Ignore missing Play Core classes (not used, but referenced by Flutter)
 -dontwarn com.google.android.play.core.splitcompat.**
@@ -14,13 +15,22 @@
 # Ignore missing javax.xml.stream (not used on Android)
 -dontwarn javax.xml.stream.**
 
-# Go backend (gobackend.aar)
+# Go backend (gobackend.aar) - CRITICAL for release builds
 -keep class gobackend.** { *; }
 -keep class go.** { *; }
+-keep interface gobackend.** { *; }
+-keepclassmembers class gobackend.** { *; }
+
+# Go mobile binding internals
+-keep class org.golang.** { *; }
+-dontwarn org.golang.**
 
 # FFmpeg Kit
 -keep class com.arthenica.ffmpegkit.** { *; }
 -keep class com.arthenica.smartexception.** { *; }
+# FFmpeg Kit (new fork package)
+-keep class com.antonkarpenko.ffmpegkit.** { *; }
+-keep class com.antonkarpenko.smartexception.** { *; }
 
 # Apache Tika (if used by FFmpeg)
 -dontwarn org.apache.tika.**
@@ -30,15 +40,77 @@
     native <methods>;
 }
 
-# Kotlin coroutines
+# Kotlin coroutines - expanded rules
 -keepnames class kotlinx.coroutines.internal.MainDispatcherFactory {}
 -keepnames class kotlinx.coroutines.CoroutineExceptionHandler {}
 -keepclassmembers class kotlinx.coroutines.** {
     volatile <fields>;
 }
+-keepclassmembernames class kotlinx.** {
+    volatile <fields>;
+}
+-dontwarn kotlinx.coroutines.**
+
+# Kotlin serialization
+-keepattributes RuntimeVisibleAnnotations,AnnotationDefault
+-dontwarn kotlin.**
+-keep class kotlin.** { *; }
+-keep class kotlin.Metadata { *; }
+
+# Keep MainActivity and related classes
+-keep class com.zarz.spotiflac.** { *; }
 
 # Prevent R8 from removing metadata
 -keepattributes *Annotation*
 -keepattributes SourceFile,LineNumberTable
 -keepattributes Signature
 -keepattributes Exceptions
+-keepattributes InnerClasses
+-keepattributes EnclosingMethod
+
+# JSON parsing (used by Go backend responses)
+-keep class org.json.** { *; }
+
+# Shared Preferences
+-keep class androidx.datastore.** { *; }
+-dontwarn androidx.datastore.**
+
+# Flutter Plugins - CRITICAL: Prevent R8 from removing plugin implementations
+# Path Provider
+-keep class io.flutter.plugins.pathprovider.** { *; }
+-keep class dev.flutter.pigeon.** { *; }
+
+# Local Notifications
+-keep class com.dexterous.** { *; }
+-keep class com.dexterous.flutterlocalnotifications.** { *; }
+
+# Receive Sharing Intent
+-keep class com.kasem.receive_sharing_intent.** { *; }
+
+# Permission Handler
+-keep class com.baseflow.permissionhandler.** { *; }
+
+# File Picker
+-keep class com.mr.flutter.plugin.filepicker.** { *; }
+
+# URL Launcher
+-keep class io.flutter.plugins.urllauncher.** { *; }
+
+# Share Plus
+-keep class dev.fluttercommunity.plus.share.** { *; }
+
+# Device Info Plus
+-keep class dev.fluttercommunity.plus.device_info.** { *; }
+
+# Open File
+-keep class com.crazecoder.openfile.** { *; }
+
+# Sqflite
+-keep class com.tekartik.sqflite.** { *; }
+
+# Dynamic Color
+-keep class io.material.** { *; }
+
+# Keep all Flutter plugin registrants
+-keep class io.flutter.plugins.GeneratedPluginRegistrant { *; }
+-keep class ** extends io.flutter.embedding.engine.plugins.FlutterPlugin { *; }

android/app/src/main/AndroidManifest.xml

@@ -20,8 +20,7 @@
         android:label="SpotiFLAC"
         android:name="${applicationName}"
         android:icon="@mipmap/ic_launcher"
-        android:requestLegacyExternalStorage="true"
-        android:usesCleartextTraffic="true"
+        android:usesCleartextTraffic="false"
         android:enableOnBackInvokedCallback="true">
 
         <activity
@@ -43,7 +42,7 @@
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
 
-            <!-- Handle Spotify URL sharing -->
+            <!-- Handle music URL sharing (Spotify, Deezer, Tidal, YT Music) -->
             <intent-filter>
                 <action android:name="android.intent.action.SEND" />
                 <category android:name="android.intent.category.DEFAULT" />
@@ -57,6 +56,33 @@
                 <category android:name="android.intent.category.BROWSABLE" />
                 <data android:scheme="https" android:host="open.spotify.com" />
             </intent-filter>
+
+            <!-- Handle Deezer deep links -->
+            <intent-filter android:autoVerify="true">
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="https" android:host="www.deezer.com" />
+                <data android:scheme="https" android:host="deezer.com" />
+                <data android:scheme="https" android:host="deezer.page.link" />
+            </intent-filter>
+
+            <!-- Handle Tidal deep links -->
+            <intent-filter android:autoVerify="true">
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="https" android:host="tidal.com" />
+                <data android:scheme="https" android:host="listen.tidal.com" />
+            </intent-filter>
+
+            <!-- Handle YouTube Music deep links -->
+            <intent-filter android:autoVerify="true">
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="https" android:host="music.youtube.com" />
+            </intent-filter>
         </activity>
 
         <!-- Download Service -->

android/app/src/main/kotlin/com/zarz/spotiflac/MainActivity.kt

@@ -1,23 +1,154 @@
 package com.zarz.spotiflac
 
 import android.content.Intent
+import android.os.Build
 import io.flutter.embedding.android.FlutterActivity
 import io.flutter.embedding.engine.FlutterEngine
+import io.flutter.embedding.engine.FlutterShellArgs
 import io.flutter.plugin.common.MethodChannel
 import gobackend.Gobackend
-import com.arthenica.ffmpegkit.FFmpegKit
-import com.arthenica.ffmpegkit.ReturnCode
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.SupervisorJob
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
+import java.util.Locale
 
 class MainActivity: FlutterActivity() {
     private val CHANNEL = "com.zarz.spotiflac/backend"
-    private val FFMPEG_CHANNEL = "com.zarz.spotiflac/ffmpeg"
     private val scope = CoroutineScope(SupervisorJob() + Dispatchers.Main)
 
+    companion object {
+        // Minimum API level we consider "safe" for Impeller (Android 10+)
+        private const val SAFE_API_FOR_IMPELLER = 29
+        
+        // Known problematic GPU patterns (lowercase)
+        private val PROBLEMATIC_GPU_PATTERNS = listOf(
+            "adreno (tm) 3",   // Adreno 300 series (305, 320, 330, etc.) - old Qualcomm
+            "adreno (tm) 4",   // Adreno 400 series - some have issues
+            "mali-4",          // Mali-400 series - old ARM GPUs
+            "mali-t6",         // Mali-T600 series
+            "mali-t7",         // Mali-T700 series (some)
+            "powervr sgx",     // PowerVR SGX series - old Imagination GPUs
+            "powervr ge8320",  // PowerVR GE8320 - known issues
+            "gc1000",          // Vivante GC1000
+            "gc2000",          // Vivante GC2000
+        )
+        
+        // Known problematic chipsets/hardware (lowercase)
+        private val PROBLEMATIC_CHIPSETS = listOf(
+            "mt6762",   // MediaTek Helio P22 with PowerVR GE8320
+            "mt6765",   // MediaTek Helio P35 with PowerVR GE8320
+            "mt8768",   // MediaTek tablet chip
+            "mp0873",   // MediaTek variant
+            "msm8974",  // Snapdragon 800/801 with Adreno 330
+            "msm8226",  // Snapdragon 400 with Adreno 305
+            "msm8926",  // Snapdragon 400 with Adreno 305
+            "apq8084",  // Snapdragon 805 (some issues)
+        )
+        
+        // Known problematic device models (lowercase)
+        private val PROBLEMATIC_MODELS = listOf(
+            "sm-t220",      // Samsung Tab A7 Lite
+            "sm-t225",      // Samsung Tab A7 Lite LTE
+            "hammerhead",   // Nexus 5 (Adreno 330)
+        )
+    }
+
+    /**
+     * Override Flutter shell args to disable Impeller on problematic devices.
+     * This is called before the Flutter engine starts.
+     */
+    override fun getFlutterShellArgs(): FlutterShellArgs {
+        val args = super.getFlutterShellArgs()
+        
+        if (shouldDisableImpeller()) {
+            // Log for debugging
+            android.util.Log.i("SpotiFLAC", "Legacy/problematic GPU detected: Disabling Impeller for ${Build.MODEL}")
+            android.util.Log.i("SpotiFLAC", "Device: ${Build.MANUFACTURER} ${Build.MODEL}, SDK: ${Build.VERSION.SDK_INT}")
+            android.util.Log.i("SpotiFLAC", "Hardware: ${Build.HARDWARE}, Board: ${Build.BOARD}")
+            
+            // Disable Impeller, forcing Skia renderer
+            args.add("--enable-impeller=false")
+        } else {
+            android.util.Log.i("SpotiFLAC", "Using Impeller renderer for ${Build.MODEL}")
+        }
+        
+        return args
+    }
+
+    /**
+     * Check if device should use Skia instead of Impeller.
+     * Returns true for devices with old/problematic GPUs or old Android versions.
+     */
+    private fun shouldDisableImpeller(): Boolean {
+        val hardware = Build.HARDWARE.lowercase(Locale.ROOT)
+        val board = Build.BOARD.lowercase(Locale.ROOT)
+        val model = Build.MODEL.lowercase(Locale.ROOT)
+        val device = Build.DEVICE.lowercase(Locale.ROOT)
+        
+        // 1. Check for explicitly problematic device models
+        for (problematicModel in PROBLEMATIC_MODELS) {
+            if (model.contains(problematicModel) || device.contains(problematicModel)) {
+                android.util.Log.i("SpotiFLAC", "Matched problematic model: $problematicModel")
+                return true
+            }
+        }
+        
+        // 2. Check for problematic chipsets
+        for (chipset in PROBLEMATIC_CHIPSETS) {
+            if (hardware.contains(chipset) || board.contains(chipset)) {
+                android.util.Log.i("SpotiFLAC", "Matched problematic chipset: $chipset")
+                return true
+            }
+        }
+        
+        // 3. For Android < 10 (API 29), be more aggressive about disabling Impeller
+        if (Build.VERSION.SDK_INT < SAFE_API_FOR_IMPELLER) {
+            // For older Android, check GPU renderer if available
+            val gpuRenderer = getGpuRenderer().lowercase(Locale.ROOT)
+            
+            // Check for known problematic GPUs
+            for (pattern in PROBLEMATIC_GPU_PATTERNS) {
+                if (gpuRenderer.contains(pattern)) {
+                    android.util.Log.i("SpotiFLAC", "Matched problematic GPU on old Android: $pattern")
+                    return true
+                }
+            }
+            
+            // For very old Android (< 8.0), always use Skia as Vulkan support is spotty
+            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
+                android.util.Log.i("SpotiFLAC", "Android < 8.0, using Skia for safety")
+                return true
+            }
+        }
+        
+        // 4. For Android 10+, still check for known problematic GPUs
+        val gpuRenderer = getGpuRenderer().lowercase(Locale.ROOT)
+        for (pattern in PROBLEMATIC_GPU_PATTERNS) {
+            if (gpuRenderer.contains(pattern)) {
+                android.util.Log.i("SpotiFLAC", "Matched problematic GPU: $pattern")
+                return true
+            }
+        }
+        
+        return false
+    }
+    
+    /**
+     * Try to get GPU renderer string.
+     * Note: This may return empty on some devices before OpenGL context is created.
+     */
+    private fun getGpuRenderer(): String {
+        return try {
+            // This might not work before GL context is created,
+            // but worth trying for additional detection
+            android.opengl.GLES20.glGetString(android.opengl.GLES20.GL_RENDERER) ?: ""
+        } catch (e: Exception) {
+            ""
+        }
+    }
+
     override fun onNewIntent(intent: Intent) {
         super.onNewIntent(intent)
         // Update the intent so receive_sharing_intent can access the new data
@@ -278,9 +409,10 @@ class MainActivity: FlutterActivity() {
                         "searchDeezerAll" -> {
                             val query = call.argument<String>("query") ?: ""
                             val trackLimit = call.argument<Int>("track_limit") ?: 15
-                            val artistLimit = call.argument<Int>("artist_limit") ?: 3
+                            val artistLimit = call.argument<Int>("artist_limit") ?: 2
+                            val filter = call.argument<String>("filter") ?: ""
                             val response = withContext(Dispatchers.IO) {
-                                Gobackend.searchDeezerAll(query, trackLimit.toLong(), artistLimit.toLong())
+                                Gobackend.searchDeezerAll(query, trackLimit.toLong(), artistLimit.toLong(), filter)
                             }
                             result.success(response)
                         }
@@ -299,6 +431,20 @@ class MainActivity: FlutterActivity() {
                             }
                             result.success(response)
                         }
+                        "parseTidalUrl" -> {
+                            val url = call.argument<String>("url") ?: ""
+                            val response = withContext(Dispatchers.IO) {
+                                Gobackend.parseTidalURLExport(url)
+                            }
+                            result.success(response)
+                        }
+                        "convertTidalToSpotifyDeezer" -> {
+                            val url = call.argument<String>("url") ?: ""
+                            val response = withContext(Dispatchers.IO) {
+                                Gobackend.convertTidalToSpotifyDeezer(url)
+                            }
+                            result.success(response)
+                        }
                         "searchDeezerByISRC" -> {
                             val isrc = call.argument<String>("isrc") ?: ""
                             val response = withContext(Dispatchers.IO) {
@@ -760,6 +906,40 @@ class MainActivity: FlutterActivity() {
                             }
                             result.success(response)
                         }
+                        // Local Library Scanning
+                        "setLibraryCoverCacheDir" -> {
+                            val cacheDir = call.argument<String>("cache_dir") ?: ""
+                            withContext(Dispatchers.IO) {
+                                Gobackend.setLibraryCoverCacheDirJSON(cacheDir)
+                            }
+                            result.success(null)
+                        }
+                        "scanLibraryFolder" -> {
+                            val folderPath = call.argument<String>("folder_path") ?: ""
+                            val response = withContext(Dispatchers.IO) {
+                                Gobackend.scanLibraryFolderJSON(folderPath)
+                            }
+                            result.success(response)
+                        }
+                        "getLibraryScanProgress" -> {
+                            val response = withContext(Dispatchers.IO) {
+                                Gobackend.getLibraryScanProgressJSON()
+                            }
+                            result.success(response)
+                        }
+                        "cancelLibraryScan" -> {
+                            withContext(Dispatchers.IO) {
+                                Gobackend.cancelLibraryScanJSON()
+                            }
+                            result.success(null)
+                        }
+                        "readAudioMetadata" -> {
+                            val filePath = call.argument<String>("file_path") ?: ""
+                            val response = withContext(Dispatchers.IO) {
+                                Gobackend.readAudioMetadataJSON(filePath)
+                            }
+                            result.success(response)
+                        }
                         else -> result.notImplemented()
                     }
                 } catch (e: Exception) {
@@ -767,37 +947,5 @@ class MainActivity: FlutterActivity() {
                 }
             }
         }
-        
-        // FFmpeg method channel
-        MethodChannel(flutterEngine.dartExecutor.binaryMessenger, FFMPEG_CHANNEL).setMethodCallHandler { call, result ->
-            scope.launch {
-                try {
-                    when (call.method) {
-                        "execute" -> {
-                            val command = call.argument<String>("command") ?: ""
-                            val session = withContext(Dispatchers.IO) {
-                                FFmpegKit.execute(command)
-                            }
-                            val returnCode = session.returnCode
-                            val output = session.output ?: ""
-                            result.success(mapOf(
-                                "success" to ReturnCode.isSuccess(returnCode),
-                                "returnCode" to (returnCode?.value ?: -1),
-                                "output" to output
-                            ))
-                        }
-                        "getVersion" -> {
-                            val session = withContext(Dispatchers.IO) {
-                                FFmpegKit.execute("-version")
-                            }
-                            result.success(session.output ?: "unknown")
-                        }
-                        else -> result.notImplemented()
-                    }
-                } catch (e: Exception) {
-                    result.error("FFMPEG_ERROR", e.message, null)
-                }
-            }
-        }
     }
 }

android/gradle.properties

@@ -1,2 +1,2 @@
-org.gradle.jvmargs=-Xmx8G -XX:MaxMetaspaceSize=4G -XX:ReservedCodeCacheSize=512m -XX:+HeapDumpOnOutOfMemoryError
+org.gradle.jvmargs=-Xmx4G -XX:MaxMetaspaceSize=2G -XX:ReservedCodeCacheSize=256m -XX:+HeapDumpOnOutOfMemoryError
 android.useAndroidX=true

build_assets/ffmpeg_service_ios.dart

@@ -1,335 +0,0 @@
-import 'dart:io';
-import 'package:ffmpeg_kit_flutter_new_audio/ffmpeg_kit.dart';
-import 'package:ffmpeg_kit_flutter_new_audio/return_code.dart';
-import 'package:spotiflac_android/utils/logger.dart';
-
-final _log = AppLogger('FFmpeg');
-
-/// FFmpeg service for iOS using ffmpeg_kit_flutter plugin
-class FFmpegServiceIOS {
-  /// Execute FFmpeg command and return result
-  static Future<FFmpegResultIOS> _execute(String command) async {
-    try {
-      final session = await FFmpegKit.execute(command);
-      final returnCode = await session.getReturnCode();
-      final output = await session.getOutput() ?? '';
-      return FFmpegResultIOS(
-        success: ReturnCode.isSuccess(returnCode),
-        returnCode: returnCode?.getValue() ?? -1,
-        output: output,
-      );
-    } catch (e) {
-      _log.e('FFmpeg execute error: $e');
-      return FFmpegResultIOS(success: false, returnCode: -1, output: e.toString());
-    }
-  }
-
-  /// Convert M4A (DASH segments) to FLAC
-  static Future<String?> convertM4aToFlac(String inputPath) async {
-    final outputPath = inputPath.replaceAll('.m4a', '.flac');
-    final command = '-i "$inputPath" -c:a flac -compression_level 8 "$outputPath" -y';
-    final result = await _execute(command);
-
-    if (result.success) {
-      try {
-        await File(inputPath).delete();
-      } catch (_) {}
-      return outputPath;
-    }
-
-    _log.e('M4A to FLAC conversion failed: ${result.output}');
-    return null;
-  }
-
-  /// Convert FLAC to MP3
-  /// If deleteOriginal is true, deletes the FLAC file after conversion
-  static Future<String?> convertFlacToMp3(
-    String inputPath, {
-    String bitrate = '320k',
-    bool deleteOriginal = true,
-  }) async {
-    // Convert in same folder, just change extension
-    final outputPath = inputPath.replaceAll('.flac', '.mp3');
-
-    final command = '-i "$inputPath" -codec:a libmp3lame -b:a $bitrate -map 0:a -map_metadata 0 -id3v2_version 3 "$outputPath" -y';
-    final result = await _execute(command);
-
-    if (result.success) {
-      // Delete original FLAC if requested
-      if (deleteOriginal) {
-        try {
-          await File(inputPath).delete();
-        } catch (_) {}
-      }
-      return outputPath;
-    }
-    _log.e('FLAC to MP3 conversion failed: ${result.output}');
-    return null;
-  }
-
-  /// Convert FLAC to M4A
-  static Future<String?> convertFlacToM4a(String inputPath, {String codec = 'aac', String bitrate = '256k'}) async {
-    final dir = File(inputPath).parent.path;
-    final baseName = inputPath.split(Platform.pathSeparator).last.replaceAll('.flac', '');
-    final outputDir = '$dir${Platform.pathSeparator}M4A';
-    await Directory(outputDir).create(recursive: true);
-    final outputPath = '$outputDir${Platform.pathSeparator}$baseName.m4a';
-
-    String command;
-    if (codec == 'alac') {
-      command = '-i "$inputPath" -codec:a alac -map 0:a -map_metadata 0 "$outputPath" -y';
-    } else {
-      command = '-i "$inputPath" -codec:a aac -b:a $bitrate -map 0:a -map_metadata 0 "$outputPath" -y';
-    }
-
-    final result = await _execute(command);
-    if (result.success) return outputPath;
-    _log.e('FLAC to M4A conversion failed: ${result.output}');
-    return null;
-  }
-
-  /// Embed cover art to FLAC file
-  static Future<String?> embedCover(String flacPath, String coverPath) async {
-    final tempOutput = '$flacPath.tmp';
-    final command = '-i "$flacPath" -i "$coverPath" -map 0:a -map 1:0 -c copy -metadata:s:v title="Album cover" -metadata:s:v comment="Cover (front)" -disposition:v attached_pic "$tempOutput" -y';
-
-    final result = await _execute(command);
-
-    if (result.success) {
-      try {
-        await File(flacPath).delete();
-        await File(tempOutput).rename(flacPath);
-        return flacPath;
-      } catch (e) {
-        _log.e('Failed to replace file after cover embed: $e');
-        return null;
-      }
-    }
-
-    try {
-      final tempFile = File(tempOutput);
-      if (await tempFile.exists()) await tempFile.delete();
-    } catch (_) {}
-
-    _log.e('Cover embed failed: ${result.output}');
-    return null;
-  }
-
-  /// Embed metadata and cover art to FLAC file
-  /// Returns the file path on success, null on failure
-  static Future<String?> embedMetadata({
-    required String flacPath,
-    String? coverPath,
-    Map<String, String>? metadata,
-  }) async {
-    final tempOutput = '$flacPath.tmp';
-    
-    // Construct command
-    final StringBuffer cmdBuffer = StringBuffer();
-    cmdBuffer.write('-i "$flacPath" ');
-    
-    // Add cover input if available
-    if (coverPath != null) {
-      cmdBuffer.write('-i "$coverPath" ');
-    }
-    
-    // Map audio stream
-    cmdBuffer.write('-map 0:a ');
-    
-    // Map cover stream if available
-    if (coverPath != null) {
-      cmdBuffer.write('-map 1:0 ');
-      cmdBuffer.write('-c:v copy ');
-      cmdBuffer.write('-disposition:v attached_pic ');
-      cmdBuffer.write('-metadata:s:v title="Album cover" ');
-      cmdBuffer.write('-metadata:s:v comment="Cover (front)" ');
-    }
-    
-    // Copy audio codec (don't re-encode)
-    cmdBuffer.write('-c:a copy ');
-    
-    // Add text metadata
-    if (metadata != null) {
-      metadata.forEach((key, value) {
-        // Sanitize value: escape double quotes
-        final sanitizedValue = value.replaceAll('"', '\\"');
-        cmdBuffer.write('-metadata $key="$sanitizedValue" ');
-      });
-    }
-    
-    cmdBuffer.write('"$tempOutput" -y');
-    
-    final command = cmdBuffer.toString();
-    _log.d('Executing FFmpeg command: $command');
-
-    final result = await _execute(command);
-
-    if (result.success) {
-      try {
-        await File(flacPath).delete();
-        await File(tempOutput).rename(flacPath);
-        return flacPath;
-      } catch (e) {
-        _log.e('Failed to replace file after metadata embed: $e');
-        return null;
-      }
-    }
-
-    // Clean up temp file if exists
-    try {
-      final tempFile = File(tempOutput);
-      if (await tempFile.exists()) {
-        await tempFile.delete();
-      }
-    } catch (_) {}
-
-    _log.e('Metadata/Cover embed failed: ${result.output}');
-    return null;
-  }
-
-  /// Embed metadata and cover art to MP3 file using ID3v2 tags
-  /// Returns the file path on success, null on failure
-  static Future<String?> embedMetadataToMp3({
-    required String mp3Path,
-    String? coverPath,
-    Map<String, String>? metadata,
-  }) async {
-    final tempOutput = '$mp3Path.tmp';
-    
-    final StringBuffer cmdBuffer = StringBuffer();
-    cmdBuffer.write('-i "$mp3Path" ');
-    
-    if (coverPath != null) {
-      cmdBuffer.write('-i "$coverPath" ');
-    }
-    
-    cmdBuffer.write('-map 0:a ');
-    
-    if (coverPath != null) {
-      cmdBuffer.write('-map 1:0 ');
-      cmdBuffer.write('-c:v:0 copy ');
-      cmdBuffer.write('-id3v2_version 3 ');
-      cmdBuffer.write('-metadata:s:v title="Album cover" ');
-      cmdBuffer.write('-metadata:s:v comment="Cover (front)" ');
-    }
-    
-    cmdBuffer.write('-c:a copy ');
-    
-    if (metadata != null) {
-      // Convert FLAC/Vorbis tags to ID3v2 tags for MP3
-      final id3Metadata = _convertToId3Tags(metadata);
-      id3Metadata.forEach((key, value) {
-        final sanitizedValue = value.replaceAll('"', '\\"');
-        cmdBuffer.write('-metadata $key="$sanitizedValue" ');
-      });
-    }
-    
-    cmdBuffer.write('-id3v2_version 3 "$tempOutput" -y');
-    
-    final command = cmdBuffer.toString();
-    _log.d('Executing FFmpeg MP3 embed command: $command');
-
-    final result = await _execute(command);
-
-    if (result.success) {
-      try {
-        await File(mp3Path).delete();
-        await File(tempOutput).rename(mp3Path);
-        _log.d('MP3 metadata embedded successfully');
-        return mp3Path;
-      } catch (e) {
-        _log.e('Failed to replace MP3 file after metadata embed: $e');
-        return null;
-      }
-    }
-
-    try {
-      final tempFile = File(tempOutput);
-      if (await tempFile.exists()) {
-        await tempFile.delete();
-      }
-    } catch (_) {}
-
-    _log.e('MP3 Metadata/Cover embed failed: ${result.output}');
-    return null;
-  }
-
-  /// Convert FLAC/Vorbis comment tags to ID3v2 compatible tags
-  static Map<String, String> _convertToId3Tags(Map<String, String> vorbisMetadata) {
-    final id3Map = <String, String>{};
-    
-    for (final entry in vorbisMetadata.entries) {
-      final key = entry.key.toUpperCase();
-      final value = entry.value;
-      
-      // Map Vorbis comments to ID3v2 frame names
-      switch (key) {
-        case 'TITLE':
-          id3Map['title'] = value;
-          break;
-        case 'ARTIST':
-          id3Map['artist'] = value;
-          break;
-        case 'ALBUM':
-          id3Map['album'] = value;
-          break;
-        case 'ALBUMARTIST':
-          id3Map['album_artist'] = value;
-          break;
-        case 'TRACKNUMBER':
-        case 'TRACK':
-          id3Map['track'] = value;
-          break;
-        case 'DISCNUMBER':
-        case 'DISC':
-          id3Map['disc'] = value;
-          break;
-        case 'DATE':
-        case 'YEAR':
-          id3Map['date'] = value;
-          break;
-        case 'ISRC':
-          id3Map['TSRC'] = value; // ID3v2 ISRC frame
-          break;
-        case 'LYRICS':
-        case 'UNSYNCEDLYRICS':
-          id3Map['lyrics'] = value;
-          break;
-        default:
-          // Pass through other tags as-is
-          id3Map[key.toLowerCase()] = value;
-      }
-    }
-    
-    return id3Map;
-  }
-
-  /// Check if FFmpeg is available
-  static Future<bool> isAvailable() async {
-    try {
-      final session = await FFmpegKit.execute('-version');
-      final returnCode = await session.getReturnCode();
-      return ReturnCode.isSuccess(returnCode);
-    } catch (e) {
-      return false;
-    }
-  }
-
-  /// Get FFmpeg version info
-  static Future<String?> getVersion() async {
-    try {
-      final session = await FFmpegKit.execute('-version');
-      return await session.getOutput();
-    } catch (e) {
-      return null;
-    }
-  }
-}
-
-class FFmpegResultIOS {
-  final bool success;
-  final int returnCode;
-  final String output;
-
-  FFmpegResultIOS({required this.success, required this.returnCode, required this.output});
-}

go_backend/amazon.go

@@ -3,7 +3,6 @@ package gobackend
 import (
 	"bufio"
 	"context"
-	"encoding/base64"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -12,79 +11,29 @@ import (
 	"net/url"
 	"os"
 	"path/filepath"
+	"regexp"
 	"strings"
 	"sync"
 	"time"
 )
 
 type AmazonDownloader struct {
-	client           *http.Client
-	regions          []string
-	lastAPICallTime  time.Time
-	apiCallCount     int
-	apiCallResetTime time.Time
+	client *http.Client
 }
 
 var (
 	globalAmazonDownloader *AmazonDownloader
 	amazonDownloaderOnce   sync.Once
-	amazonRateLimitMu      sync.Mutex
 )
 
-// DoubleDoubleSubmitResponse is the response from DoubleDouble submit endpoint
-type DoubleDoubleSubmitResponse struct {
-	Success bool   `json:"success"`
-	ID      string `json:"id"`
-}
-
-type DoubleDoubleStatusResponse struct {
-	Status         string `json:"status"`
-	FriendlyStatus string `json:"friendlyStatus"`
-	URL            string `json:"url"`
-	Current        struct {
-		Name   string `json:"name"`
-		Artist string `json:"artist"`
-	} `json:"current"`
-}
-
-func amazonArtistsMatch(expectedArtist, foundArtist string) bool {
-	normExpected := strings.ToLower(strings.TrimSpace(expectedArtist))
-	normFound := strings.ToLower(strings.TrimSpace(foundArtist))
-
-	if normExpected == normFound {
-		return true
-	}
-
-	if strings.Contains(normExpected, normFound) || strings.Contains(normFound, normExpected) {
-		return true
-	}
-
-	expectedFirst := strings.Split(normExpected, ",")[0]
-	expectedFirst = strings.Split(expectedFirst, " feat")[0]
-	expectedFirst = strings.Split(expectedFirst, " ft.")[0]
-	expectedFirst = strings.TrimSpace(expectedFirst)
-
-	foundFirst := strings.Split(normFound, ",")[0]
-	foundFirst = strings.Split(foundFirst, " feat")[0]
-	foundFirst = strings.Split(foundFirst, " ft.")[0]
-	foundFirst = strings.TrimSpace(foundFirst)
-
-	if expectedFirst == foundFirst {
-		return true
-	}
-
-	if strings.Contains(expectedFirst, foundFirst) || strings.Contains(foundFirst, expectedFirst) {
-		return true
-	}
-
-	expectedASCII := amazonIsASCIIString(expectedArtist)
-	foundASCII := amazonIsASCIIString(foundArtist)
-	if expectedASCII != foundASCII {
-		GoLog("[Amazon] Artist names in different scripts, assuming match: '%s' vs '%s'\n", expectedArtist, foundArtist)
-		return true
-	}
-
-	return false
+// AfkarXYZResponse is the response from AfkarXYZ API
+type AfkarXYZResponse struct {
+	Success bool `json:"success"`
+	Data    struct {
+		DirectLink string `json:"direct_link"`
+		FileName   string `json:"file_name"`
+		FileSize   int64  `json:"file_size"`
+	} `json:"data"`
 }
 
 func amazonIsASCIIString(s string) bool {
@@ -99,234 +48,64 @@ func amazonIsASCIIString(s string) bool {
 func NewAmazonDownloader() *AmazonDownloader {
 	amazonDownloaderOnce.Do(func() {
 		globalAmazonDownloader = &AmazonDownloader{
-			client:           NewHTTPClientWithTimeout(120 * time.Second), // 120s timeout like PC
-			regions:          []string{"us", "eu"},                        // Same regions as PC
-			apiCallResetTime: time.Now(),
+			client: NewHTTPClientWithTimeout(120 * time.Second),
 		}
 	})
 	return globalAmazonDownloader
 }
 
-// waitForRateLimit implements rate limiting similar to PC version
-func (a *AmazonDownloader) waitForRateLimit() {
-	amazonRateLimitMu.Lock()
-	defer amazonRateLimitMu.Unlock()
+func (a *AmazonDownloader) downloadFromAfkarXYZ(amazonURL string) (string, string, error) {
+	apiURL := "https://amazon.afkarxyz.fun/convert?url=" + url.QueryEscape(amazonURL)
 
-	now := time.Now()
+	GoLog("[Amazon] Fetching from AfkarXYZ API...\n")
 
-	if now.Sub(a.apiCallResetTime) >= time.Minute {
-		a.apiCallCount = 0
-		a.apiCallResetTime = now
+	req, err := http.NewRequest("GET", apiURL, nil)
+	if err != nil {
+		return "", "", fmt.Errorf("failed to create request: %w", err)
 	}
 
-	if a.apiCallCount >= 9 {
-		waitTime := time.Minute - now.Sub(a.apiCallResetTime)
-		if waitTime > 0 {
-			GoLog("[Amazon] Rate limit reached, waiting %v...\n", waitTime.Round(time.Second))
-			time.Sleep(waitTime)
-			a.apiCallCount = 0
-			a.apiCallResetTime = time.Now()
-		}
+	req.Header.Set("User-Agent", getRandomUserAgent())
+
+	resp, err := a.client.Do(req)
+	if err != nil {
+		return "", "", fmt.Errorf("failed to call AfkarXYZ API: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		return "", "", fmt.Errorf("AfkarXYZ API returned status %d", resp.StatusCode)
 	}
 
-	if !a.lastAPICallTime.IsZero() {
-		timeSinceLastCall := now.Sub(a.lastAPICallTime)
-		minDelay := 7 * time.Second
-		if timeSinceLastCall < minDelay {
-			waitTime := minDelay - timeSinceLastCall
-			GoLog("[Amazon] Rate limiting: waiting %v...\n", waitTime.Round(time.Second))
-			time.Sleep(waitTime)
-		}
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return "", "", fmt.Errorf("failed to read response: %w", err)
 	}
 
-	a.lastAPICallTime = time.Now()
-	a.apiCallCount++
-}
-
-// Uses same service as PC version (doubledouble.top)
-func (a *AmazonDownloader) GetAvailableAPIs() []string {
-	// DoubleDouble service regions (same as PC)
-	// Format: https://{region}.doubledouble.top
-	var apis []string
-	for _, region := range a.regions {
-		apis = append(apis, fmt.Sprintf("https://%s.doubledouble.top", region))
-	}
-	return apis
-}
-
-// downloadFromDoubleDoubleService downloads a track using DoubleDouble service (same as PC)
-// This uses submit → poll → download mechanism
-// Internal function - not exported to gomobile
-func (a *AmazonDownloader) downloadFromDoubleDoubleService(amazonURL, _ string) (string, string, string, error) {
-	var lastError error
-
-	for _, region := range a.regions {
-		GoLog("[Amazon] Trying region: %s...\n", region)
-
-		serviceBase, _ := base64.StdEncoding.DecodeString("aHR0cHM6Ly8=")               // https://
-		serviceDomain, _ := base64.StdEncoding.DecodeString("LmRvdWJsZWRvdWJsZS50b3A=") // .doubledouble.top
-		baseURL := fmt.Sprintf("%s%s%s", string(serviceBase), region, string(serviceDomain))
-
-		encodedURL := url.QueryEscape(amazonURL)
-		submitURL := fmt.Sprintf("%s/dl?url=%s", baseURL, encodedURL)
-
-		a.waitForRateLimit()
-
-		req, err := http.NewRequest("GET", submitURL, nil)
-		if err != nil {
-			lastError = fmt.Errorf("failed to create request: %w", err)
-			continue
-		}
-
-		req.Header.Set("User-Agent", getRandomUserAgent())
-
-		fmt.Println("[Amazon] Submitting download request...")
-
-		// Retry logic for 429 errors (like PC version: 3 retries with 15s wait)
-		var resp *http.Response
-		maxRetries := 3
-		for retry := 0; retry < maxRetries; retry++ {
-			resp, err = a.client.Do(req)
-			if err != nil {
-				lastError = fmt.Errorf("failed to submit request: %w", err)
-				break
-			}
-
-			if resp.StatusCode == 429 { // Too Many Requests
-				resp.Body.Close()
-				if retry < maxRetries-1 {
-					waitTime := 15 * time.Second
-					GoLog("[Amazon] Rate limited (429), waiting %v before retry %d/%d...\n", waitTime, retry+2, maxRetries)
-					time.Sleep(waitTime)
-					continue
-				}
-				lastError = fmt.Errorf("API rate limit exceeded after %d retries", maxRetries)
-				break
-			}
-
-			if resp.StatusCode != 200 {
-				resp.Body.Close()
-				lastError = fmt.Errorf("submit failed with status %d", resp.StatusCode)
-				break
-			}
-
-			// Success - break retry loop
-			break
-		}
-
-		if err != nil || lastError != nil {
-			if resp != nil {
-				resp.Body.Close()
-			}
-			continue
-		}
-
-		var submitResp DoubleDoubleSubmitResponse
-		if err := json.NewDecoder(resp.Body).Decode(&submitResp); err != nil {
-			resp.Body.Close()
-			lastError = fmt.Errorf("failed to decode submit response: %w", err)
-			continue
-		}
-		resp.Body.Close()
-
-		if !submitResp.Success || submitResp.ID == "" {
-			lastError = fmt.Errorf("submit request failed")
-			continue
-		}
-
-		downloadID := submitResp.ID
-		GoLog("[Amazon] Download ID: %s\n", downloadID)
-
-		// Step 2: Poll for completion
-		statusURL := fmt.Sprintf("%s/dl/%s", baseURL, downloadID)
-		fmt.Println("[Amazon] Waiting for download to complete...")
-
-		maxWait := 300 * time.Second // 5 minutes max wait
-		elapsed := time.Duration(0)
-		pollInterval := 3 * time.Second
-
-		for elapsed < maxWait {
-			time.Sleep(pollInterval)
-			elapsed += pollInterval
-
-			statusReq, err := http.NewRequest("GET", statusURL, nil)
-			if err != nil {
-				continue
-			}
-
-			statusReq.Header.Set("User-Agent", getRandomUserAgent())
-
-			statusResp, err := a.client.Do(statusReq)
-			if err != nil {
-				fmt.Printf("\r[Amazon] Status check failed, retrying...")
-				continue
-			}
-
-			if statusResp.StatusCode != 200 {
-				statusResp.Body.Close()
-				fmt.Printf("\r[Amazon] Status check failed (status %d), retrying...", statusResp.StatusCode)
-				continue
-			}
-
-			var status DoubleDoubleStatusResponse
-			if err := json.NewDecoder(statusResp.Body).Decode(&status); err != nil {
-				statusResp.Body.Close()
-				fmt.Printf("\r[Amazon] Invalid JSON response, retrying...")
-				continue
-			}
-			statusResp.Body.Close()
-
-			if status.Status == "done" {
-				fmt.Println("\n[Amazon] Download ready!")
-
-				fileURL := status.URL
-				if strings.HasPrefix(fileURL, "./") {
-					fileURL = fmt.Sprintf("%s/%s", baseURL, fileURL[2:])
-				} else if strings.HasPrefix(fileURL, "/") {
-					fileURL = fmt.Sprintf("%s%s", baseURL, fileURL)
-				}
-
-				trackName := status.Current.Name
-				artist := status.Current.Artist
-
-				GoLog("[Amazon] Downloading: %s - %s\n", artist, trackName)
-				return fileURL, trackName, artist, nil
-
-			} else if status.Status == "error" {
-				errorMsg := status.FriendlyStatus
-				if errorMsg == "" {
-					errorMsg = "Unknown error"
-				}
-				lastError = fmt.Errorf("processing failed: %s", errorMsg)
-				break
-			} else {
-				// Still processing
-				friendlyStatus := status.FriendlyStatus
-				if friendlyStatus == "" {
-					friendlyStatus = status.Status
-				}
-				fmt.Printf("\r[Amazon] %s...", friendlyStatus)
-			}
-		}
-
-		if elapsed >= maxWait {
-			lastError = fmt.Errorf("download timeout")
-			fmt.Printf("\n[Amazon] Error with %s region: %v\n", region, lastError)
-			continue
-		}
-
-		if lastError != nil {
-			fmt.Printf("\n[Amazon] Error with %s region: %v\n", region, lastError)
-		}
+	var apiResp AfkarXYZResponse
+	if err := json.Unmarshal(body, &apiResp); err != nil {
+		return "", "", fmt.Errorf("failed to decode response: %w", err)
 	}
 
-	return "", "", "", fmt.Errorf("all regions failed. Last error: %v", lastError)
+	if !apiResp.Success || apiResp.Data.DirectLink == "" {
+		return "", "", fmt.Errorf("AfkarXYZ API failed or no download link found")
+	}
+
+	fileName := apiResp.Data.FileName
+	if fileName == "" {
+		fileName = "track.flac"
+	}
+
+	reg := regexp.MustCompile(`[<>:"/\\|?*]`)
+	fileName = reg.ReplaceAllString(fileName, "")
+
+	GoLog("[Amazon] AfkarXYZ returned: %s (%.2f MB)\n", fileName, float64(apiResp.Data.FileSize)/(1024*1024))
+
+	return apiResp.Data.DirectLink, fileName, nil
 }
 
 func (a *AmazonDownloader) DownloadFile(downloadURL, outputPath, itemID string) error {
 	ctx := context.Background()
 
-	// Initialize item progress (required for all downloads)
 	if itemID != "" {
 		StartItemProgress(itemID)
 		defer CompleteItemProgress(itemID)
@@ -378,7 +157,6 @@ func (a *AmazonDownloader) DownloadFile(downloadURL, outputPath, itemID string)
 		written, err = io.Copy(bufWriter, resp.Body)
 	}
 
-	// Flush buffer before checking for errors
 	flushErr := bufWriter.Flush()
 	closeErr := out.Close()
 
@@ -398,13 +176,12 @@ func (a *AmazonDownloader) DownloadFile(downloadURL, outputPath, itemID string)
 		return fmt.Errorf("failed to close file: %w", closeErr)
 	}
 
-	// Verify file size if Content-Length was provided
 	if expectedSize > 0 && written != expectedSize {
 		os.Remove(outputPath)
 		return fmt.Errorf("incomplete download: expected %d bytes, got %d bytes", expectedSize, written)
 	}
 
-	fmt.Printf("\r[Amazon] Downloaded: %.2f MB (Complete)\n", float64(written)/(1024*1024))
+	GoLog("[Amazon] Downloaded: %.2f MB (Complete)\n", float64(written)/(1024*1024))
 	return nil
 }
 
@@ -422,7 +199,6 @@ type AmazonDownloadResult struct {
 	ISRC        string
 }
 
-// Uses DoubleDouble service (same as PC version)
 func downloadFromAmazon(req DownloadRequest) (AmazonDownloadResult, error) {
 	downloader := NewAmazonDownloader()
 
@@ -434,8 +210,7 @@ func downloadFromAmazon(req DownloadRequest) (AmazonDownloadResult, error) {
 	var availability *TrackAvailability
 	var err error
 
-	if strings.HasPrefix(req.SpotifyID, "deezer:") {
-		deezerID := strings.TrimPrefix(req.SpotifyID, "deezer:")
+	if deezerID, found := strings.CutPrefix(req.SpotifyID, "deezer:"); found {
 		GoLog("[Amazon] Using Deezer ID for SongLink lookup: %s\n", deezerID)
 		availability, err = songlink.CheckAvailabilityFromDeezer(deezerID)
 	} else if req.SpotifyID != "" {
@@ -458,21 +233,15 @@ func downloadFromAmazon(req DownloadRequest) (AmazonDownloadResult, error) {
 		}
 	}
 
-	// Download using DoubleDouble service (same as PC)
-	downloadURL, trackName, artistName, err := downloader.downloadFromDoubleDoubleService(availability.AmazonURL, req.OutputDir)
+	// Download using AfkarXYZ API
+	downloadURL, _, err := downloader.downloadFromAfkarXYZ(availability.AmazonURL)
 	if err != nil {
-		return AmazonDownloadResult{}, fmt.Errorf("failed to get download URL: %w", err)
+		return AmazonDownloadResult{}, fmt.Errorf("failed to get download URL from AfkarXYZ: %w", err)
 	}
 
-	// Verify artist matches
-	if artistName != "" && !amazonArtistsMatch(req.ArtistName, artistName) {
-		GoLog("[Amazon] Artist mismatch: expected '%s', got '%s'. Rejecting.\n", req.ArtistName, artistName)
-		return AmazonDownloadResult{}, fmt.Errorf("artist mismatch: expected '%s', got '%s'", req.ArtistName, artistName)
-	}
+	GoLog("[Amazon] Match found: '%s' by '%s'\n", req.TrackName, req.ArtistName)
 
-	GoLog("[Amazon] Match found: '%s' by '%s'\n", trackName, artistName)
-
-	filename := buildFilenameFromTemplate(req.FilenameFormat, map[string]interface{}{
+	filename := buildFilenameFromTemplate(req.FilenameFormat, map[string]any{
 		"title":  req.TrackName,
 		"artist": req.ArtistName,
 		"album":  req.AlbumName,
@@ -519,14 +288,13 @@ func downloadFromAmazon(req DownloadRequest) (AmazonDownloadResult, error) {
 		SetItemFinalizing(req.ItemID)
 	}
 
-	// Log track info from DoubleDouble (for debugging)
-	if trackName != "" && artistName != "" {
-		GoLog("[Amazon] DoubleDouble returned: %s - %s\n", artistName, trackName)
-	}
-
 	existingMeta, metaErr := ReadMetadata(outputPath)
 	actualTrackNum := req.TrackNumber
 	actualDiscNum := req.DiscNumber
+	actualDate := req.ReleaseDate
+	actualAlbum := req.AlbumName
+	actualTitle := req.TrackName
+	actualArtist := req.ArtistName
 
 	if metaErr == nil && existingMeta != nil {
 		if existingMeta.TrackNumber > 0 && (req.TrackNumber == 0 || req.TrackNumber == 1) {
@@ -537,40 +305,55 @@ func downloadFromAmazon(req DownloadRequest) (AmazonDownloadResult, error) {
 			actualDiscNum = existingMeta.DiscNumber
 			GoLog("[Amazon] Using disc number from file: %d (request had: %d)\n", actualDiscNum, req.DiscNumber)
 		}
+		if existingMeta.Date != "" && req.ReleaseDate == "" {
+			actualDate = existingMeta.Date
+			GoLog("[Amazon] Using release date from file: %s\n", actualDate)
+		}
+		if existingMeta.Album != "" && req.AlbumName == "" {
+			actualAlbum = existingMeta.Album
+			GoLog("[Amazon] Using album from file: %s\n", actualAlbum)
+		}
+		GoLog("[Amazon] Existing metadata - Title: %s, Artist: %s, Album: %s, Date: %s\n",
+			existingMeta.Title, existingMeta.Artist, existingMeta.Album, existingMeta.Date)
 	}
 
-	// Embed metadata using Spotify data (more accurate than DoubleDouble)
-	// But preserve track/disc numbers from file if they were better
 	metadata := Metadata{
-		Title:       req.TrackName,
-		Artist:      req.ArtistName,
-		Album:       req.AlbumName,
+		Title:       actualTitle,
+		Artist:      actualArtist,
+		Album:       actualAlbum,
 		AlbumArtist: req.AlbumArtist,
-		Date:        req.ReleaseDate,
+		Date:        actualDate,
 		TrackNumber: actualTrackNum,
 		TotalTracks: req.TotalTracks,
 		DiscNumber:  actualDiscNum,
 		ISRC:        req.ISRC,
-		Genre:       req.Genre,     // From Deezer album metadata
-		Label:       req.Label,     // From Deezer album metadata
-		Copyright:   req.Copyright, // From Deezer album metadata
+		Genre:       req.Genre,
+		Label:       req.Label,
+		Copyright:   req.Copyright,
 	}
 
-	// Use cover data from parallel fetch
 	var coverData []byte
-	if parallelResult != nil && parallelResult.CoverData != nil {
+	if parallelResult != nil && parallelResult.CoverData != nil && len(parallelResult.CoverData) > 0 {
 		coverData = parallelResult.CoverData
 		GoLog("[Amazon] Using parallel-fetched cover (%d bytes)\n", len(coverData))
+	} else {
+		existingCover, coverErr := ExtractCoverArt(outputPath)
+		if coverErr == nil && len(existingCover) > 0 {
+			coverData = existingCover
+			GoLog("[Amazon] Using existing cover from Amazon file (%d bytes)\n", len(coverData))
+		} else {
+			GoLog("[Amazon] No cover available (parallel fetch failed and no existing cover)\n")
+		}
 	}
 
 	if err := EmbedMetadataWithCoverData(outputPath, metadata, coverData); err != nil {
-		fmt.Printf("Warning: failed to embed metadata: %v\n", err)
+		GoLog("[Amazon] Warning: failed to embed metadata: %v\n", err)
 	}
 
 	if req.EmbedLyrics && parallelResult != nil && parallelResult.LyricsLRC != "" {
 		lyricsMode := req.LyricsMode
 		if lyricsMode == "" {
-			lyricsMode = "embed" // default
+			lyricsMode = "embed"
 		}
 
 		if lyricsMode == "external" || lyricsMode == "both" {
@@ -587,14 +370,14 @@ func downloadFromAmazon(req DownloadRequest) (AmazonDownloadResult, error) {
 			if embedErr := EmbedLyrics(outputPath, parallelResult.LyricsLRC); embedErr != nil {
 				GoLog("[Amazon] Warning: failed to embed lyrics: %v\n", embedErr)
 			} else {
-				fmt.Println("[Amazon] Lyrics embedded successfully")
+				GoLog("[Amazon] Lyrics embedded successfully\n")
 			}
 		}
 	} else if req.EmbedLyrics {
-		fmt.Println("[Amazon] No lyrics available from parallel fetch")
+		GoLog("[Amazon] No lyrics available from parallel fetch\n")
 	}
 
-	fmt.Println("[Amazon] ✓ Downloaded successfully from Amazon Music")
+	GoLog("[Amazon] Downloaded successfully from Amazon Music\n")
 
 	quality, err := GetAudioQuality(outputPath)
 	if err != nil {

go_backend/deezer.go

@@ -55,7 +55,7 @@ func GetDeezerClient() *DeezerClient {
 type deezerTrack struct {
 	ID            int64             `json:"id"`
 	Title         string            `json:"title"`
-	Duration      int               `json:"duration"` // in seconds
+	Duration      int               `json:"duration"`
 	TrackPosition int               `json:"track_position"`
 	DiskNumber    int               `json:"disk_number"`
 	ISRC          string            `json:"isrc"`
@@ -121,7 +121,7 @@ func (c *DeezerClient) convertTrack(track deezerTrack) TrackMetadata {
 		AlbumArtist: track.Artist.Name,
 		DurationMS:  track.Duration * 1000,
 		Images:      albumImage,
-		ReleaseDate: releaseDate, // Added this
+		ReleaseDate: releaseDate,
 		TrackNumber: track.TrackPosition,
 		DiscNumber:  track.DiskNumber,
 		ExternalURL: track.Link,
@@ -182,11 +182,38 @@ type deezerPlaylistFull struct {
 	} `json:"tracks"`
 }
 
-// NOTE: ISRC is NOT fetched during search for performance - use GetTrackISRC when needed for download
-func (c *DeezerClient) SearchAll(ctx context.Context, query string, trackLimit, artistLimit int) (*SearchAllResult, error) {
-	GoLog("[Deezer] SearchAll: query=%q, trackLimit=%d, artistLimit=%d\n", query, trackLimit, artistLimit)
+func (c *DeezerClient) SearchAll(ctx context.Context, query string, trackLimit, artistLimit int, filter string) (*SearchAllResult, error) {
+	GoLog("[Deezer] SearchAll: query=%q, trackLimit=%d, artistLimit=%d, filter=%q\n", query, trackLimit, artistLimit, filter)
 
-	cacheKey := fmt.Sprintf("deezer:all:%s:%d:%d", query, trackLimit, artistLimit)
+	albumLimit := 5
+	playlistLimit := 5
+
+	if filter != "" {
+		switch filter {
+		case "track":
+			trackLimit = 50
+			artistLimit = 0
+			albumLimit = 0
+			playlistLimit = 0
+		case "artist":
+			trackLimit = 0
+			artistLimit = 20
+			albumLimit = 0
+			playlistLimit = 0
+		case "album":
+			trackLimit = 0
+			artistLimit = 0
+			albumLimit = 20
+			playlistLimit = 0
+		case "playlist":
+			trackLimit = 0
+			artistLimit = 0
+			albumLimit = 0
+			playlistLimit = 20
+		}
+	}
+
+	cacheKey := fmt.Sprintf("deezer:all:%s:%d:%d:%d:%d:%s", query, trackLimit, artistLimit, albumLimit, playlistLimit, filter)
 
 	c.cacheMu.RLock()
 	if entry, ok := c.searchCache[cacheKey]; ok && !entry.isExpired() {
@@ -197,69 +224,189 @@ func (c *DeezerClient) SearchAll(ctx context.Context, query string, trackLimit,
 	c.cacheMu.RUnlock()
 
 	result := &SearchAllResult{
-		Tracks:  make([]TrackMetadata, 0, trackLimit),
-		Artists: make([]SearchArtistResult, 0, artistLimit),
+		Tracks:    make([]TrackMetadata, 0, trackLimit),
+		Artists:   make([]SearchArtistResult, 0, artistLimit),
+		Albums:    make([]SearchAlbumResult, 0, albumLimit),
+		Playlists: make([]SearchPlaylistResult, 0, playlistLimit),
 	}
 
-	// Search tracks - NO ISRC fetch for performance
-	trackURL := fmt.Sprintf("%s/track?q=%s&limit=%d", deezerSearchURL, url.QueryEscape(query), trackLimit)
-	GoLog("[Deezer] Fetching tracks from: %s\n", trackURL)
+	if trackLimit > 0 {
+		trackURL := fmt.Sprintf("%s/track?q=%s&limit=%d", deezerSearchURL, url.QueryEscape(query), trackLimit)
+		GoLog("[Deezer] Fetching tracks from: %s\n", trackURL)
 
-	var trackResp struct {
-		Data  []deezerTrack `json:"data"`
-		Error *struct {
-			Type    string `json:"type"`
-			Message string `json:"message"`
-			Code    int    `json:"code"`
-		} `json:"error"`
-	}
-	if err := c.getJSON(ctx, trackURL, &trackResp); err != nil {
-		GoLog("[Deezer] Track search failed: %v\n", err)
-		return nil, fmt.Errorf("deezer track search failed: %w", err)
-	}
-
-	if trackResp.Error != nil {
-		GoLog("[Deezer] API error: type=%s, code=%d, message=%s\n", trackResp.Error.Type, trackResp.Error.Code, trackResp.Error.Message)
-		return nil, fmt.Errorf("deezer API error: %s (code %d)", trackResp.Error.Message, trackResp.Error.Code)
-	}
-
-	GoLog("[Deezer] Got %d tracks from API\n", len(trackResp.Data))
-
-	for _, track := range trackResp.Data {
-		result.Tracks = append(result.Tracks, c.convertTrack(track))
-	}
-
-	artistURL := fmt.Sprintf("%s/artist?q=%s&limit=%d", deezerSearchURL, url.QueryEscape(query), artistLimit)
-	GoLog("[Deezer] Fetching artists from: %s\n", artistURL)
-
-	var artistResp struct {
-		Data  []deezerArtist `json:"data"`
-		Error *struct {
-			Type    string `json:"type"`
-			Message string `json:"message"`
-			Code    int    `json:"code"`
-		} `json:"error"`
-	}
-	if err := c.getJSON(ctx, artistURL, &artistResp); err == nil {
-		if artistResp.Error != nil {
-			GoLog("[Deezer] Artist API error: type=%s, code=%d, message=%s\n", artistResp.Error.Type, artistResp.Error.Code, artistResp.Error.Message)
-		} else {
-			GoLog("[Deezer] Got %d artists from API\n", len(artistResp.Data))
-			for _, artist := range artistResp.Data {
-				result.Artists = append(result.Artists, SearchArtistResult{
-					ID:         fmt.Sprintf("deezer:%d", artist.ID),
-					Name:       artist.Name,
-					Images:     c.getBestArtistImage(artist),
-					Followers:  artist.NbFan,
-					Popularity: 0,
-				})
-			}
+		var trackResp struct {
+			Data  []deezerTrack `json:"data"`
+			Error *struct {
+				Type    string `json:"type"`
+				Message string `json:"message"`
+				Code    int    `json:"code"`
+			} `json:"error"`
+		}
+		if err := c.getJSON(ctx, trackURL, &trackResp); err != nil {
+			GoLog("[Deezer] Track search failed: %v\n", err)
+			return nil, fmt.Errorf("deezer track search failed: %w", err)
+		}
+
+		if trackResp.Error != nil {
+			GoLog("[Deezer] API error: type=%s, code=%d, message=%s\n", trackResp.Error.Type, trackResp.Error.Code, trackResp.Error.Message)
+			return nil, fmt.Errorf("deezer API error: %s (code %d)", trackResp.Error.Message, trackResp.Error.Code)
+		}
+
+		GoLog("[Deezer] Got %d tracks from API\n", len(trackResp.Data))
+
+		for _, track := range trackResp.Data {
+			result.Tracks = append(result.Tracks, c.convertTrack(track))
 		}
-	} else {
-		GoLog("[Deezer] Artist search failed: %v\n", err)
 	}
 
-	GoLog("[Deezer] SearchAll complete: %d tracks, %d artists\n", len(result.Tracks), len(result.Artists))
+	if artistLimit > 0 {
+		artistURL := fmt.Sprintf("%s/artist?q=%s&limit=%d", deezerSearchURL, url.QueryEscape(query), artistLimit)
+		GoLog("[Deezer] Fetching artists from: %s\n", artistURL)
+
+		var artistResp struct {
+			Data  []deezerArtist `json:"data"`
+			Error *struct {
+				Type    string `json:"type"`
+				Message string `json:"message"`
+				Code    int    `json:"code"`
+			} `json:"error"`
+		}
+		if err := c.getJSON(ctx, artistURL, &artistResp); err == nil {
+			if artistResp.Error != nil {
+				GoLog("[Deezer] Artist API error: type=%s, code=%d, message=%s\n", artistResp.Error.Type, artistResp.Error.Code, artistResp.Error.Message)
+			} else {
+				GoLog("[Deezer] Got %d artists from API\n", len(artistResp.Data))
+				for _, artist := range artistResp.Data {
+					result.Artists = append(result.Artists, SearchArtistResult{
+						ID:         fmt.Sprintf("deezer:%d", artist.ID),
+						Name:       artist.Name,
+						Images:     c.getBestArtistImage(artist),
+						Followers:  artist.NbFan,
+						Popularity: 0,
+					})
+				}
+			}
+		} else {
+			GoLog("[Deezer] Artist search failed: %v\n", err)
+		}
+	}
+
+	if albumLimit > 0 {
+		albumURL := fmt.Sprintf("%s/album?q=%s&limit=%d", deezerSearchURL, url.QueryEscape(query), albumLimit)
+		GoLog("[Deezer] Fetching albums from: %s\n", albumURL)
+
+		var albumResp struct {
+			Data []struct {
+				ID          int64        `json:"id"`
+				Title       string       `json:"title"`
+				Cover       string       `json:"cover"`
+				CoverMedium string       `json:"cover_medium"`
+				CoverBig    string       `json:"cover_big"`
+				CoverXL     string       `json:"cover_xl"`
+				NbTracks    int          `json:"nb_tracks"`
+				ReleaseDate string       `json:"release_date"`
+				RecordType  string       `json:"record_type"`
+				Artist      deezerArtist `json:"artist"`
+			} `json:"data"`
+			Error *struct {
+				Type    string `json:"type"`
+				Message string `json:"message"`
+				Code    int    `json:"code"`
+			} `json:"error"`
+		}
+		if err := c.getJSON(ctx, albumURL, &albumResp); err == nil {
+			if albumResp.Error != nil {
+				GoLog("[Deezer] Album API error: type=%s, code=%d, message=%s\n", albumResp.Error.Type, albumResp.Error.Code, albumResp.Error.Message)
+			} else {
+				GoLog("[Deezer] Got %d albums from API\n", len(albumResp.Data))
+				for _, album := range albumResp.Data {
+					coverURL := album.CoverXL
+					if coverURL == "" {
+						coverURL = album.CoverBig
+					}
+					if coverURL == "" {
+						coverURL = album.CoverMedium
+					}
+					if coverURL == "" {
+						coverURL = album.Cover
+					}
+
+					albumType := album.RecordType
+					if albumType == "compile" {
+						albumType = "compilation"
+					}
+
+					result.Albums = append(result.Albums, SearchAlbumResult{
+						ID:          fmt.Sprintf("deezer:%d", album.ID),
+						Name:        album.Title,
+						Artists:     album.Artist.Name,
+						Images:      coverURL,
+						ReleaseDate: album.ReleaseDate,
+						TotalTracks: album.NbTracks,
+						AlbumType:   albumType,
+					})
+				}
+			}
+		} else {
+			GoLog("[Deezer] Album search failed: %v\n", err)
+		}
+	}
+
+	if playlistLimit > 0 {
+		playlistURL := fmt.Sprintf("%s/playlist?q=%s&limit=%d", deezerSearchURL, url.QueryEscape(query), playlistLimit)
+		GoLog("[Deezer] Fetching playlists from: %s\n", playlistURL)
+
+		var playlistResp struct {
+			Data []struct {
+				ID            int64  `json:"id"`
+				Title         string `json:"title"`
+				Picture       string `json:"picture"`
+				PictureMedium string `json:"picture_medium"`
+				PictureBig    string `json:"picture_big"`
+				PictureXL     string `json:"picture_xl"`
+				NbTracks      int    `json:"nb_tracks"`
+				User          struct {
+					Name string `json:"name"`
+				} `json:"user"`
+			} `json:"data"`
+			Error *struct {
+				Type    string `json:"type"`
+				Message string `json:"message"`
+				Code    int    `json:"code"`
+			} `json:"error"`
+		}
+		if err := c.getJSON(ctx, playlistURL, &playlistResp); err == nil {
+			if playlistResp.Error != nil {
+				GoLog("[Deezer] Playlist API error: type=%s, code=%d, message=%s\n", playlistResp.Error.Type, playlistResp.Error.Code, playlistResp.Error.Message)
+			} else {
+				GoLog("[Deezer] Got %d playlists from API\n", len(playlistResp.Data))
+				for _, playlist := range playlistResp.Data {
+					pictureURL := playlist.PictureXL
+					if pictureURL == "" {
+						pictureURL = playlist.PictureBig
+					}
+					if pictureURL == "" {
+						pictureURL = playlist.PictureMedium
+					}
+					if pictureURL == "" {
+						pictureURL = playlist.Picture
+					}
+
+					result.Playlists = append(result.Playlists, SearchPlaylistResult{
+						ID:          fmt.Sprintf("deezer:%d", playlist.ID),
+						Name:        playlist.Title,
+						Owner:       playlist.User.Name,
+						Images:      pictureURL,
+						TotalTracks: playlist.NbTracks,
+					})
+				}
+			}
+		} else {
+			GoLog("[Deezer] Playlist search failed: %v\n", err)
+		}
+	}
+
+	GoLog("[Deezer] SearchAll complete: %d tracks, %d artists, %d albums, %d playlists\n", len(result.Tracks), len(result.Artists), len(result.Albums), len(result.Playlists))
 
 	c.cacheMu.Lock()
 	c.searchCache[cacheKey] = &cacheEntry{
@@ -271,7 +418,6 @@ func (c *DeezerClient) SearchAll(ctx context.Context, query string, trackLimit,
 	return result, nil
 }
 
-// GetTrack fetches a single track by Deezer ID
 func (c *DeezerClient) GetTrack(ctx context.Context, trackID string) (*TrackResponse, error) {
 	trackURL := fmt.Sprintf(deezerTrackURL, trackID)
 
@@ -285,7 +431,6 @@ func (c *DeezerClient) GetTrack(ctx context.Context, trackID string) (*TrackResp
 	}, nil
 }
 
-// ISRC is fetched in parallel for better performance
 func (c *DeezerClient) GetAlbum(ctx context.Context, albumID string) (*AlbumResponsePayload, error) {
 	c.cacheMu.RLock()
 	if entry, ok := c.albumCache[albumID]; ok && !entry.isExpired() {
@@ -311,7 +456,6 @@ func (c *DeezerClient) GetAlbum(ctx context.Context, albumID string) (*AlbumResp
 		artistName = strings.Join(names, ", ")
 	}
 
-	// Extract genres as comma-separated string
 	var genres []string
 	for _, g := range album.Genres.Data {
 		if g.Name != "" {
@@ -327,23 +471,60 @@ func (c *DeezerClient) GetAlbum(ctx context.Context, albumID string) (*AlbumResp
 		Artists:     artistName,
 		ArtistId:    fmt.Sprintf("deezer:%d", album.Artist.ID),
 		Images:      albumImage,
-		Genre:       genreStr,    // From Deezer album
-		Label:       album.Label, // From Deezer album
+		Genre:       genreStr,
+		Label:       album.Label,
 	}
 
-	isrcMap := c.fetchISRCsParallel(ctx, album.Tracks.Data)
+	allTracks := album.Tracks.Data
 
-	tracks := make([]AlbumTrackMetadata, 0, len(album.Tracks.Data))
-	// Normalize record_type (Deezer uses "compile" instead of "compilation")
+	if album.NbTracks > len(allTracks) {
+		GoLog("[Deezer] Album has %d tracks but only got %d, fetching remaining...", album.NbTracks, len(allTracks))
+
+		tracksURL := fmt.Sprintf("%s/tracks?limit=100&index=%d", fmt.Sprintf(deezerAlbumURL, albumID), len(allTracks))
+
+		for len(allTracks) < album.NbTracks {
+			var tracksResp struct {
+				Data []deezerTrack `json:"data"`
+				Next string        `json:"next"`
+			}
+
+			if err := c.getJSON(ctx, tracksURL, &tracksResp); err != nil {
+				GoLog("[Deezer] Warning: failed to fetch album tracks page: %v", err)
+				break
+			}
+
+			if len(tracksResp.Data) == 0 {
+				break
+			}
+
+			allTracks = append(allTracks, tracksResp.Data...)
+
+			if tracksResp.Next == "" {
+				break
+			}
+			tracksURL = tracksResp.Next
+		}
+
+		GoLog("[Deezer] Fetched total %d tracks for album", len(allTracks))
+	}
+
+	isrcMap := c.fetchISRCsParallel(ctx, allTracks)
+
+	tracks := make([]AlbumTrackMetadata, 0, len(allTracks))
 	albumType := album.RecordType
 	if albumType == "compile" {
 		albumType = "compilation"
 	}
 
-	for _, track := range album.Tracks.Data {
+	for i, track := range allTracks {
 		trackIDStr := fmt.Sprintf("%d", track.ID)
 		isrc := isrcMap[trackIDStr]
 
+		trackNum := track.TrackPosition
+		if trackNum == 0 {
+			trackNum = i + 1
+		}
+
 		tracks = append(tracks, AlbumTrackMetadata{
 			SpotifyID:   fmt.Sprintf("deezer:%d", track.ID),
 			Artists:     track.Artist.Name,
@@ -353,7 +534,7 @@ func (c *DeezerClient) GetAlbum(ctx context.Context, albumID string) (*AlbumResp
 			DurationMS:  track.Duration * 1000,
 			Images:      albumImage,
 			ReleaseDate: album.ReleaseDate,
-			TrackNumber: track.TrackPosition,
+			TrackNumber: trackNum,
 			TotalTracks: album.NbTracks,
 			DiscNumber:  track.DiskNumber,
 			ExternalURL: track.Link,
@@ -386,7 +567,6 @@ func (c *DeezerClient) GetArtist(ctx context.Context, artistID string) (*ArtistR
 	}
 	c.cacheMu.RUnlock()
 
-	// Fetch artist info
 	artistURL := fmt.Sprintf(deezerArtistURL, artistID)
 	var artist deezerArtistFull
 	if err := c.getJSON(ctx, artistURL, &artist); err != nil {
@@ -401,7 +581,6 @@ func (c *DeezerClient) GetArtist(ctx context.Context, artistID string) (*ArtistR
 		Popularity: 0,
 	}
 
-	// Fetch artist albums
 	albumsURL := fmt.Sprintf("%s/albums?limit=100", fmt.Sprintf(deezerArtistURL, artistID))
 	var albumsResp struct {
 		Data []struct {
@@ -413,7 +592,7 @@ func (c *DeezerClient) GetArtist(ctx context.Context, artistID string) (*ArtistR
 			CoverMedium string `json:"cover_medium"`
 			CoverBig    string `json:"cover_big"`
 			CoverXL     string `json:"cover_xl"`
-			RecordType  string `json:"record_type"` // album, single, ep, compile
+			RecordType  string `json:"record_type"`
 		} `json:"data"`
 	}
 
@@ -485,10 +664,43 @@ func (c *DeezerClient) GetPlaylist(ctx context.Context, playlistID string) (*Pla
 	info.Owner.Name = playlist.Title
 	info.Owner.Images = playlistImage
 
-	isrcMap := c.fetchISRCsParallel(ctx, playlist.Tracks.Data)
+	allTracks := playlist.Tracks.Data
 
-	tracks := make([]AlbumTrackMetadata, 0, len(playlist.Tracks.Data))
-	for _, track := range playlist.Tracks.Data {
+	if playlist.NbTracks > len(allTracks) {
+		GoLog("[Deezer] Playlist has %d tracks but only got %d, fetching remaining...", playlist.NbTracks, len(allTracks))
+
+		tracksURL := fmt.Sprintf("%s/tracks?limit=100&index=%d", fmt.Sprintf(deezerPlaylistURL, playlistID), len(allTracks))
+
+		for len(allTracks) < playlist.NbTracks {
+			var tracksResp struct {
+				Data []deezerTrack `json:"data"`
+				Next string        `json:"next"`
+			}
+
+			if err := c.getJSON(ctx, tracksURL, &tracksResp); err != nil {
+				GoLog("[Deezer] Warning: failed to fetch playlist tracks page: %v", err)
+				break
+			}
+
+			if len(tracksResp.Data) == 0 {
+				break
+			}
+
+			allTracks = append(allTracks, tracksResp.Data...)
+
+			if tracksResp.Next == "" {
+				break
+			}
+			tracksURL = tracksResp.Next
+		}
+
+		GoLog("[Deezer] Fetched total %d tracks for playlist", len(allTracks))
+	}
+
+	isrcMap := c.fetchISRCsParallel(ctx, allTracks)
+
+	tracks := make([]AlbumTrackMetadata, 0, len(allTracks))
+	for _, track := range allTracks {
 		albumImage := track.Album.CoverXL
 		if albumImage == "" {
 			albumImage = track.Album.CoverBig
@@ -559,7 +771,6 @@ func (c *DeezerClient) fetchFullTrack(ctx context.Context, trackID string) (*dee
 	return &track, nil
 }
 
-// fetchISRCsParallel fetches ISRCs for multiple tracks in parallel with caching
 func (c *DeezerClient) fetchISRCsParallel(ctx context.Context, tracks []deezerTrack) map[string]string {
 	result := make(map[string]string, len(tracks))
 	var resultMu sync.Mutex
@@ -598,7 +809,6 @@ func (c *DeezerClient) fetchISRCsParallel(ctx context.Context, tracks []deezerTr
 		return result
 	}
 
-	// Use semaphore to limit concurrent requests
 	sem := make(chan struct{}, deezerMaxParallelISRC)
 	var wg sync.WaitGroup
 
@@ -620,7 +830,6 @@ func (c *DeezerClient) fetchISRCsParallel(ctx context.Context, tracks []deezerTr
 				return
 			}
 
-			// Store in result and cache
 			resultMu.Lock()
 			result[trackIDStr] = fullTrack.ISRC
 			resultMu.Unlock()
@@ -635,7 +844,6 @@ func (c *DeezerClient) fetchISRCsParallel(ctx context.Context, tracks []deezerTr
 	return result
 }
 
-// Use this when you need ISRC for download
 func (c *DeezerClient) GetTrackISRC(ctx context.Context, trackID string) (string, error) {
 	c.cacheMu.RLock()
 	if isrc, ok := c.isrcCache[trackID]; ok {
@@ -696,11 +904,10 @@ func (c *DeezerClient) getBestAlbumImage(album deezerAlbumFull) string {
 }
 
 type AlbumExtendedMetadata struct {
-	Genre string // Comma-separated list of genres
-	Label string // Record label name
+	Genre string
+	Label string
 }
 
-// Uses the album ID from a track to fetch extended metadata
 func (c *DeezerClient) GetAlbumExtendedMetadata(ctx context.Context, albumID string) (*AlbumExtendedMetadata, error) {
 	if albumID == "" {
 		return nil, fmt.Errorf("empty album ID")
@@ -745,7 +952,6 @@ func (c *DeezerClient) GetAlbumExtendedMetadata(ctx context.Context, albumID str
 	return result, nil
 }
 
-// GetTrackAlbumID fetches the album ID for a Deezer track
 func (c *DeezerClient) GetTrackAlbumID(ctx context.Context, trackID string) (string, error) {
 	trackURL := fmt.Sprintf(deezerTrackURL, trackID)
 
@@ -757,7 +963,6 @@ func (c *DeezerClient) GetTrackAlbumID(ctx context.Context, trackID string) (str
 	return fmt.Sprintf("%d", track.Album.ID), nil
 }
 
-// This is a convenience function that first gets the album ID, then fetches album metadata
 func (c *DeezerClient) GetExtendedMetadataByTrackID(ctx context.Context, trackID string) (*AlbumExtendedMetadata, error) {
 	albumID, err := c.GetTrackAlbumID(ctx, trackID)
 	if err != nil {
@@ -767,29 +972,22 @@ func (c *DeezerClient) GetExtendedMetadataByTrackID(ctx context.Context, trackID
 	return c.GetAlbumExtendedMetadata(ctx, albumID)
 }
 
-// GetExtendedMetadataByISRC searches for a track by ISRC and fetches extended metadata (genre, label)
 func (c *DeezerClient) GetExtendedMetadataByISRC(ctx context.Context, isrc string) (*AlbumExtendedMetadata, error) {
 	if isrc == "" {
 		return nil, fmt.Errorf("empty ISRC")
 	}
 
-	// First, search for track by ISRC
 	track, err := c.SearchByISRC(ctx, isrc)
 	if err != nil {
 		return nil, fmt.Errorf("failed to find track by ISRC: %w", err)
 	}
 
-	// SpotifyID contains "deezer:123" format, extract the ID
-	deezerID := track.SpotifyID
-	if strings.HasPrefix(deezerID, "deezer:") {
-		deezerID = strings.TrimPrefix(deezerID, "deezer:")
-	}
+	deezerID := strings.TrimPrefix(track.SpotifyID, "deezer:")
 
 	if deezerID == "" {
 		return nil, fmt.Errorf("track found but no Deezer ID")
 	}
 
-	// Then fetch extended metadata using the Deezer track ID
 	return c.GetExtendedMetadataByTrackID(ctx, deezerID)
 }
 
@@ -819,7 +1017,6 @@ func (c *DeezerClient) getJSON(ctx context.Context, endpoint string, dst interfa
 	return json.Unmarshal(body, dst)
 }
 
-// parseDeezerURL is internal function, returns type and ID
 func parseDeezerURL(input string) (string, string, error) {
 	trimmed := strings.TrimSpace(input)
 	if trimmed == "" {

go_backend/duplicate.go

@@ -10,7 +10,6 @@ import (
 	"time"
 )
 
-// ISRCIndex holds a cached map of ISRC -> file path for fast duplicate checking
 type ISRCIndex struct {
 	index     map[string]string // ISRC (uppercase) -> file path
 	outputDir string
@@ -25,8 +24,6 @@ var (
 	isrcIndexTTL     = 5 * time.Minute
 )
 
-// GetISRCIndex returns or builds an ISRC index for the given directory
-// Uses per-directory mutex to prevent concurrent builds (race condition fix)
 func GetISRCIndex(outputDir string) *ISRCIndex {
 	// Fast path: check cache first
 	isrcIndexCacheMu.RLock()
@@ -56,7 +53,6 @@ func GetISRCIndex(outputDir string) *ISRCIndex {
 	return buildISRCIndex(outputDir)
 }
 
-// buildISRCIndex scans a directory and builds a map of ISRC -> file path
 func buildISRCIndex(outputDir string) *ISRCIndex {
 	idx := &ISRCIndex{
 		index:     make(map[string]string),
@@ -91,7 +87,7 @@ func buildISRCIndex(outputDir string) *ISRCIndex {
 		return nil
 	})
 
-	fmt.Printf("[ISRCIndex] Built index for %s: %d files in %v\n", 
+	fmt.Printf("[ISRCIndex] Built index for %s: %d files in %v\n",
 		outputDir, fileCount, time.Since(startTime).Round(time.Millisecond))
 
 	isrcIndexCacheMu.Lock()
@@ -113,7 +109,6 @@ func (idx *ISRCIndex) lookup(isrc string) (string, bool) {
 	return path, exists
 }
 
-// remove deletes an ISRC entry from the index (internal use)
 func (idx *ISRCIndex) remove(isrc string) {
 	if isrc == "" {
 		return
@@ -125,14 +120,11 @@ func (idx *ISRCIndex) remove(isrc string) {
 	delete(idx.index, strings.ToUpper(isrc))
 }
 
-// Lookup checks if an ISRC exists in the index (gomobile compatible)
-// Returns filepath if found, empty string if not found
 func (idx *ISRCIndex) Lookup(isrc string) (string, error) {
 	path, _ := idx.lookup(isrc)
 	return path, nil
 }
 
-// Add adds a new ISRC to the index (call after successful download)
 func (idx *ISRCIndex) Add(isrc, filePath string) {
 	if isrc == "" || filePath == "" {
 		return
@@ -144,15 +136,12 @@ func (idx *ISRCIndex) Add(isrc, filePath string) {
 	idx.index[strings.ToUpper(isrc)] = filePath
 }
 
-// InvalidateCache clears the ISRC index cache for a directory
 func InvalidateISRCCache(outputDir string) {
 	isrcIndexCacheMu.Lock()
 	delete(isrcIndexCache, outputDir)
 	isrcIndexCacheMu.Unlock()
 }
 
-// checkISRCExistsInternal checks if a file with the given ISRC exists (internal use)
-// Uses ISRC index for fast lookup
 func checkISRCExistsInternal(outputDir, isrc string) (string, bool) {
 	if isrc == "" || outputDir == "" {
 		return "", false
@@ -173,13 +162,11 @@ func checkISRCExistsInternal(outputDir, isrc string) (string, bool) {
 	return filePath, true
 }
 
-// CheckISRCExists is the exported version for gomobile (returns string, error)
 func CheckISRCExists(outputDir, isrc string) (string, error) {
 	filepath, _ := checkISRCExistsInternal(outputDir, isrc)
 	return filepath, nil
 }
 
-// CheckFileExists checks if a file with the given name exists
 func CheckFileExists(filePath string) bool {
 	info, err := os.Stat(filePath)
 	if err != nil {
@@ -188,7 +175,6 @@ func CheckFileExists(filePath string) bool {
 	return !info.IsDir() && info.Size() > 0
 }
 
-// FileExistenceResult represents the result of checking if a file exists
 type FileExistenceResult struct {
 	ISRC       string `json:"isrc"`
 	Exists     bool   `json:"exists"`
@@ -249,8 +235,6 @@ func CheckFilesExistParallel(outputDir string, tracksJSON string) (string, error
 	return string(resultJSON), nil
 }
 
-// PreBuildISRCIndex pre-builds the ISRC index for a directory
-// Call this when app starts or when entering album/playlist screen
 func PreBuildISRCIndex(outputDir string) error {
 	if outputDir == "" {
 		return fmt.Errorf("output directory is required")
@@ -260,7 +244,6 @@ func PreBuildISRCIndex(outputDir string) error {
 	return nil
 }
 
-// AddToISRCIndex adds a new file to the ISRC index after successful download
 func AddToISRCIndex(outputDir, isrc, filePath string) {
 	if outputDir == "" || isrc == "" || filePath == "" {
 		return

go_backend/exports.go

@@ -148,17 +148,16 @@ type DownloadRequest struct {
 	LyricsMode           string `json:"lyrics_mode,omitempty"`
 }
 
-// DownloadResponse represents the result of a download
 type DownloadResponse struct {
 	Success                bool   `json:"success"`
 	Message                string `json:"message"`
 	FilePath               string `json:"file_path,omitempty"`
 	Error                  string `json:"error,omitempty"`
-	ErrorType              string `json:"error_type,omitempty"` // "not_found", "rate_limit", "network", "unknown"
+	ErrorType              string `json:"error_type,omitempty"`
 	AlreadyExists          bool   `json:"already_exists,omitempty"`
 	ActualBitDepth         int    `json:"actual_bit_depth,omitempty"`
 	ActualSampleRate       int    `json:"actual_sample_rate,omitempty"`
-	Service                string `json:"service,omitempty"` // Actual service used (for fallback)
+	Service                string `json:"service,omitempty"`
 	Title                  string `json:"title,omitempty"`
 	Artist                 string `json:"artist,omitempty"`
 	Album                  string `json:"album,omitempty"`
@@ -172,6 +171,7 @@ type DownloadResponse struct {
 	Label                  string `json:"label,omitempty"`
 	Copyright              string `json:"copyright,omitempty"`
 	SkipMetadataEnrichment bool   `json:"skip_metadata_enrichment,omitempty"`
+	LyricsLRC              string `json:"lyrics_lrc,omitempty"`
 }
 
 type DownloadResult struct {
@@ -185,6 +185,7 @@ type DownloadResult struct {
 	TrackNumber int
 	DiscNumber  int
 	ISRC        string
+	LyricsLRC   string
 }
 
 func DownloadTrack(requestJSON string) (string, error) {
@@ -193,7 +194,6 @@ func DownloadTrack(requestJSON string) (string, error) {
 		return errorResponse("Invalid request: " + err.Error())
 	}
 
-	// Trim whitespace from string fields to prevent filename/path issues
 	req.TrackName = strings.TrimSpace(req.TrackName)
 	req.ArtistName = strings.TrimSpace(req.ArtistName)
 	req.AlbumName = strings.TrimSpace(req.AlbumName)
@@ -222,6 +222,7 @@ func DownloadTrack(requestJSON string) (string, error) {
 				TrackNumber: tidalResult.TrackNumber,
 				DiscNumber:  tidalResult.DiscNumber,
 				ISRC:        tidalResult.ISRC,
+				LyricsLRC:   tidalResult.LyricsLRC,
 			}
 		}
 		err = tidalErr
@@ -317,6 +318,7 @@ func DownloadTrack(requestJSON string) (string, error) {
 		TrackNumber:      result.TrackNumber,
 		DiscNumber:       result.DiscNumber,
 		ISRC:             result.ISRC,
+		LyricsLRC:        result.LyricsLRC,
 	}
 
 	jsonBytes, _ := json.Marshal(resp)
@@ -380,6 +382,7 @@ func DownloadWithFallback(requestJSON string) (string, error) {
 					TrackNumber: tidalResult.TrackNumber,
 					DiscNumber:  tidalResult.DiscNumber,
 					ISRC:        tidalResult.ISRC,
+					LyricsLRC:   tidalResult.LyricsLRC,
 				}
 			} else if !errors.Is(tidalErr, ErrDownloadCancelled) {
 				GoLog("[DownloadWithFallback] Tidal error: %v\n", tidalErr)
@@ -452,6 +455,7 @@ func DownloadWithFallback(requestJSON string) (string, error) {
 					TrackNumber:      result.TrackNumber,
 					DiscNumber:       result.DiscNumber,
 					ISRC:             result.ISRC,
+					LyricsLRC:        result.LyricsLRC,
 				}
 				jsonBytes, _ := json.Marshal(resp)
 				return string(jsonBytes), nil
@@ -480,6 +484,7 @@ func DownloadWithFallback(requestJSON string) (string, error) {
 				TrackNumber:      result.TrackNumber,
 				DiscNumber:       result.DiscNumber,
 				ISRC:             result.ISRC,
+				LyricsLRC:        result.LyricsLRC,
 			}
 			jsonBytes, _ := json.Marshal(resp)
 			return string(jsonBytes), nil
@@ -615,10 +620,11 @@ func FetchLyrics(spotifyID, trackName, artistName string, durationMs int64) (str
 	}
 
 	result := map[string]interface{}{
-		"success":   true,
-		"source":    lyrics.Source,
-		"sync_type": lyrics.SyncType,
-		"lines":     lyrics.Lines,
+		"success":      true,
+		"source":       lyrics.Source,
+		"sync_type":    lyrics.SyncType,
+		"lines":        lyrics.Lines,
+		"instrumental": lyrics.Instrumental,
 	}
 
 	jsonBytes, err := json.Marshal(result)
@@ -635,6 +641,7 @@ func GetLyricsLRC(spotifyID, trackName, artistName string, filePath string, dura
 		if err == nil && lyrics != "" {
 			return lyrics, nil
 		}
+		return "", nil
 	}
 
 	client := NewLyricsClient()
@@ -644,6 +651,10 @@ func GetLyricsLRC(spotifyID, trackName, artistName string, filePath string, dura
 		return "", err
 	}
 
+	if lyricsData.Instrumental {
+		return "[instrumental:true]", nil
+	}
+
 	lrcContent := convertToLRCWithMetadata(lyricsData, trackName, artistName)
 	return lrcContent, nil
 }
@@ -706,12 +717,12 @@ func ClearTrackIDCache() {
 	ClearTrackCache()
 }
 
-func SearchDeezerAll(query string, trackLimit, artistLimit int) (string, error) {
+func SearchDeezerAll(query string, trackLimit, artistLimit int, filter string) (string, error) {
 	ctx, cancel := context.WithTimeout(context.Background(), 15*time.Second)
 	defer cancel()
 
 	client := GetDeezerClient()
-	results, err := client.SearchAll(ctx, query, trackLimit, artistLimit)
+	results, err := client.SearchAll(ctx, query, trackLimit, artistLimit, filter)
 	if err != nil {
 		return "", err
 	}
@@ -724,9 +735,6 @@ func SearchDeezerAll(query string, trackLimit, artistLimit int) (string, error)
 	return string(jsonBytes), nil
 }
 
-// GetDeezerMetadata fetches metadata from Deezer URL or ID
-// resourceType: track, album, artist, playlist
-// resourceID: Deezer ID
 func GetDeezerMetadata(resourceType, resourceID string) (string, error) {
 	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
 	defer cancel()
@@ -760,7 +768,6 @@ func GetDeezerMetadata(resourceType, resourceID string) (string, error) {
 	return string(jsonBytes), nil
 }
 
-// ParseDeezerURLExport parses a Deezer URL and returns type and ID
 func ParseDeezerURLExport(url string) (string, error) {
 	resourceType, resourceID, err := parseDeezerURL(url)
 	if err != nil {
@@ -780,9 +787,51 @@ func ParseDeezerURLExport(url string) (string, error) {
 	return string(jsonBytes), nil
 }
 
-// GetDeezerExtendedMetadata fetches genre and label from Deezer album
-// trackID: Deezer track ID (will look up album ID from track)
-// Returns JSON with genre, label fields
+func ParseTidalURLExport(url string) (string, error) {
+	resourceType, resourceID, err := parseTidalURL(url)
+	if err != nil {
+		return "", err
+	}
+
+	result := map[string]string{
+		"type": resourceType,
+		"id":   resourceID,
+	}
+
+	jsonBytes, err := json.Marshal(result)
+	if err != nil {
+		return "", err
+	}
+
+	return string(jsonBytes), nil
+}
+
+func ConvertTidalToSpotifyDeezer(tidalURL string) (string, error) {
+	client := NewSongLinkClient()
+	availability, err := client.CheckAvailabilityFromURL(tidalURL)
+	if err != nil {
+		return "", err
+	}
+
+	result := map[string]string{
+		"spotify_id":  availability.SpotifyID,
+		"deezer_id":   availability.DeezerID,
+		"deezer_url":  availability.DeezerURL,
+		"spotify_url": "",
+	}
+
+	if availability.SpotifyID != "" {
+		result["spotify_url"] = "https://open.spotify.com/track/" + availability.SpotifyID
+	}
+
+	jsonBytes, err := json.Marshal(result)
+	if err != nil {
+		return "", err
+	}
+
+	return string(jsonBytes), nil
+}
+
 func GetDeezerExtendedMetadata(trackID string) (string, error) {
 	if trackID == "" {
 		return "", fmt.Errorf("empty track ID")
@@ -811,7 +860,6 @@ func GetDeezerExtendedMetadata(trackID string) (string, error) {
 	return string(jsonBytes), nil
 }
 
-// SearchDeezerByISRC searches for a track by ISRC on Deezer
 func SearchDeezerByISRC(isrc string) (string, error) {
 	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
 	defer cancel()
@@ -830,8 +878,6 @@ func SearchDeezerByISRC(isrc string) (string, error) {
 	return string(jsonBytes), nil
 }
 
-// ConvertSpotifyToDeezer converts a Spotify track/album ID to Deezer and fetches metadata
-// Useful when Spotify API is rate limited
 func ConvertSpotifyToDeezer(resourceType, spotifyID string) (string, error) {
 	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
 	defer cancel()
@@ -881,7 +927,6 @@ func ConvertSpotifyToDeezer(resourceType, spotifyID string) (string, error) {
 	return "", fmt.Errorf("Spotify to Deezer conversion only supported for tracks and albums. Please search by name for %s", resourceType)
 }
 
-// GetSpotifyMetadataWithDeezerFallback tries Spotify first, falls back to Deezer on rate limit
 func GetSpotifyMetadataWithDeezerFallback(spotifyURL string) (string, error) {
 	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
 	defer cancel()
@@ -938,10 +983,6 @@ func CheckAvailabilityFromDeezerID(deezerTrackID string) (string, error) {
 	return string(jsonBytes), nil
 }
 
-// CheckAvailabilityByPlatformID checks track availability using any platform as source
-// platform: "spotify", "deezer", "tidal", "amazonMusic", "appleMusic", "youtube"
-// entityType: "song" or "album"
-// entityID: the ID on that platform
 func CheckAvailabilityByPlatformID(platform, entityType, entityID string) (string, error) {
 	client := NewSongLinkClient()
 	availability, err := client.CheckAvailabilityByPlatform(platform, entityType, entityID)
@@ -957,19 +998,16 @@ func CheckAvailabilityByPlatformID(platform, entityType, entityID string) (strin
 	return string(jsonBytes), nil
 }
 
-// GetSpotifyIDFromDeezerTrack converts a Deezer track ID to Spotify track ID
 func GetSpotifyIDFromDeezerTrack(deezerTrackID string) (string, error) {
 	client := NewSongLinkClient()
 	return client.GetSpotifyIDFromDeezer(deezerTrackID)
 }
 
-// GetTidalURLFromDeezerTrack converts a Deezer track ID to Tidal URL
 func GetTidalURLFromDeezerTrack(deezerTrackID string) (string, error) {
 	client := NewSongLinkClient()
 	return client.GetTidalURLFromDeezer(deezerTrackID)
 }
 
-// GetAmazonURLFromDeezerTrack converts a Deezer track ID to Amazon Music URL
 func GetAmazonURLFromDeezerTrack(deezerTrackID string) (string, error) {
 	client := NewSongLinkClient()
 	return client.GetAmazonURLFromDeezer(deezerTrackID)
@@ -1019,7 +1057,6 @@ func errorResponse(msg string) (string, error) {
 
 // ==================== EXTENSION SYSTEM ====================
 
-// InitExtensionSystem initializes the extension system with directories
 func InitExtensionSystem(extensionsDir, dataDir string) error {
 	manager := GetExtensionManager()
 	if err := manager.SetDirectories(extensionsDir, dataDir); err != nil {
@@ -1034,7 +1071,6 @@ func InitExtensionSystem(extensionsDir, dataDir string) error {
 	return nil
 }
 
-// LoadExtensionsFromDir loads all extensions from a directory
 func LoadExtensionsFromDir(dirPath string) (string, error) {
 	manager := GetExtensionManager()
 	loaded, errors := manager.LoadExtensionsFromDirectory(dirPath)
@@ -1056,7 +1092,6 @@ func LoadExtensionsFromDir(dirPath string) (string, error) {
 	return string(jsonBytes), nil
 }
 
-// LoadExtensionFromPath loads a single extension from a .spotiflac-ext file
 func LoadExtensionFromPath(filePath string) (string, error) {
 	manager := GetExtensionManager()
 	ext, err := manager.LoadExtensionFromFile(filePath)
@@ -1086,19 +1121,16 @@ func LoadExtensionFromPath(filePath string) (string, error) {
 	return string(jsonBytes), nil
 }
 
-// UnloadExtensionByID unloads an extension
 func UnloadExtensionByID(extensionID string) error {
 	manager := GetExtensionManager()
 	return manager.UnloadExtension(extensionID)
 }
 
-// RemoveExtensionByID completely removes an extension (unload + delete files)
 func RemoveExtensionByID(extensionID string) error {
 	manager := GetExtensionManager()
 	return manager.RemoveExtension(extensionID)
 }
 
-// UpgradeExtensionFromPath upgrades an existing extension from a new package file
 func UpgradeExtensionFromPath(filePath string) (string, error) {
 	manager := GetExtensionManager()
 	ext, err := manager.UpgradeExtension(filePath)
@@ -1127,25 +1159,21 @@ func UpgradeExtensionFromPath(filePath string) (string, error) {
 	return string(jsonBytes), nil
 }
 
-// CheckExtensionUpgradeFromPath checks if a package file is an upgrade for an existing extension
 func CheckExtensionUpgradeFromPath(filePath string) (string, error) {
 	manager := GetExtensionManager()
 	return manager.CheckExtensionUpgradeJSON(filePath)
 }
 
-// GetInstalledExtensions returns all installed extensions as JSON
 func GetInstalledExtensions() (string, error) {
 	manager := GetExtensionManager()
 	return manager.GetInstalledExtensionsJSON()
 }
 
-// SetExtensionEnabledByID enables or disables an extension
 func SetExtensionEnabledByID(extensionID string, enabled bool) error {
 	manager := GetExtensionManager()
 	return manager.SetExtensionEnabled(extensionID, enabled)
 }
 
-// SetProviderPriorityJSON sets the provider priority order from JSON array
 func SetProviderPriorityJSON(priorityJSON string) error {
 	var priority []string
 	if err := json.Unmarshal([]byte(priorityJSON), &priority); err != nil {
@@ -1156,7 +1184,6 @@ func SetProviderPriorityJSON(priorityJSON string) error {
 	return nil
 }
 
-// GetProviderPriorityJSON returns the provider priority order as JSON
 func GetProviderPriorityJSON() (string, error) {
 	priority := GetProviderPriority()
 	jsonBytes, err := json.Marshal(priority)
@@ -1166,7 +1193,6 @@ func GetProviderPriorityJSON() (string, error) {
 	return string(jsonBytes), nil
 }
 
-// SetMetadataProviderPriorityJSON sets the metadata provider priority order from JSON array
 func SetMetadataProviderPriorityJSON(priorityJSON string) error {
 	var priority []string
 	if err := json.Unmarshal([]byte(priorityJSON), &priority); err != nil {
@@ -1177,7 +1203,6 @@ func SetMetadataProviderPriorityJSON(priorityJSON string) error {
 	return nil
 }
 
-// GetMetadataProviderPriorityJSON returns the metadata provider priority order as JSON
 func GetMetadataProviderPriorityJSON() (string, error) {
 	priority := GetMetadataProviderPriority()
 	jsonBytes, err := json.Marshal(priority)
@@ -1187,7 +1212,6 @@ func GetMetadataProviderPriorityJSON() (string, error) {
 	return string(jsonBytes), nil
 }
 
-// GetExtensionSettingsJSON returns settings for an extension as JSON
 func GetExtensionSettingsJSON(extensionID string) (string, error) {
 	store := GetExtensionSettingsStore()
 	settings := store.GetAll(extensionID)
@@ -1200,7 +1224,6 @@ func GetExtensionSettingsJSON(extensionID string) (string, error) {
 	return string(jsonBytes), nil
 }
 
-// SetExtensionSettingsJSON sets settings for an extension from JSON
 func SetExtensionSettingsJSON(extensionID, settingsJSON string) error {
 	var settings map[string]interface{}
 	if err := json.Unmarshal([]byte(settingsJSON), &settings); err != nil {
@@ -1216,7 +1239,6 @@ func SetExtensionSettingsJSON(extensionID, settingsJSON string) error {
 	return manager.InitializeExtension(extensionID, settings)
 }
 
-// SearchTracksWithExtensionsJSON searches all extension metadata providers
 func SearchTracksWithExtensionsJSON(query string, limit int) (string, error) {
 	manager := GetExtensionManager()
 	tracks, err := manager.SearchTracksWithExtensions(query, limit)
@@ -1232,7 +1254,6 @@ func SearchTracksWithExtensionsJSON(query string, limit int) (string, error) {
 	return string(jsonBytes), nil
 }
 
-// DownloadWithExtensionsJSON downloads using extension providers with fallback
 func DownloadWithExtensionsJSON(requestJSON string) (string, error) {
 	var req DownloadRequest
 	if err := json.Unmarshal([]byte(requestJSON), &req); err != nil {
@@ -1252,14 +1273,11 @@ func DownloadWithExtensionsJSON(requestJSON string) (string, error) {
 	return string(jsonBytes), nil
 }
 
-// CleanupExtensions unloads all extensions gracefully
 func CleanupExtensions() {
 	manager := GetExtensionManager()
 	manager.UnloadAllExtensions()
 }
 
-// InvokeExtensionActionJSON invokes a custom action on an extension (e.g., button click handler)
-// actionName is the JS function name to call (e.g., "startLogin", "authenticate", etc.)
 func InvokeExtensionActionJSON(extensionID, actionName string) (string, error) {
 	manager := GetExtensionManager()
 	result, err := manager.InvokeAction(extensionID, actionName)
@@ -1275,7 +1293,6 @@ func InvokeExtensionActionJSON(extensionID, actionName string) (string, error) {
 	return string(jsonBytes), nil
 }
 
-// GetExtensionPendingAuthJSON returns pending auth request for an extension
 func GetExtensionPendingAuthJSON(extensionID string) (string, error) {
 	req := GetPendingAuthRequest(extensionID)
 	if req == nil {
@@ -1296,12 +1313,10 @@ func GetExtensionPendingAuthJSON(extensionID string) (string, error) {
 	return string(jsonBytes), nil
 }
 
-// SetExtensionAuthCodeByID sets auth code for an extension (called from Flutter after OAuth callback)
 func SetExtensionAuthCodeByID(extensionID, authCode string) {
 	SetExtensionAuthCode(extensionID, authCode)
 }
 
-// SetExtensionTokensByID sets tokens for an extension
 func SetExtensionTokensByID(extensionID, accessToken, refreshToken string, expiresIn int) {
 	var expiresAt time.Time
 	if expiresIn > 0 {
@@ -1310,12 +1325,10 @@ func SetExtensionTokensByID(extensionID, accessToken, refreshToken string, expir
 	SetExtensionTokens(extensionID, accessToken, refreshToken, expiresAt)
 }
 
-// ClearExtensionPendingAuthByID clears pending auth request for an extension
 func ClearExtensionPendingAuthByID(extensionID string) {
 	ClearPendingAuthRequest(extensionID)
 }
 
-// IsExtensionAuthenticatedByID checks if an extension is authenticated
 func IsExtensionAuthenticatedByID(extensionID string) bool {
 	extensionAuthStateMu.RLock()
 	defer extensionAuthStateMu.RUnlock()
@@ -1332,7 +1345,6 @@ func IsExtensionAuthenticatedByID(extensionID string) bool {
 	return state.IsAuthenticated
 }
 
-// GetAllPendingAuthRequestsJSON returns all pending auth requests
 func GetAllPendingAuthRequestsJSON() (string, error) {
 	pendingAuthRequestsMu.RLock()
 	defer pendingAuthRequestsMu.RUnlock()
@@ -1376,12 +1388,10 @@ func GetPendingFFmpegCommandJSON(commandID string) (string, error) {
 	return string(jsonBytes), nil
 }
 
-// SetFFmpegCommandResultByID sets the result of an FFmpeg command
 func SetFFmpegCommandResultByID(commandID string, success bool, output, errorMsg string) {
 	SetFFmpegCommandResult(commandID, success, output, errorMsg)
 }
 
-// GetAllPendingFFmpegCommandsJSON returns all pending FFmpeg commands
 func GetAllPendingFFmpegCommandsJSON() (string, error) {
 	ffmpegCommandsMu.RLock()
 	defer ffmpegCommandsMu.RUnlock()
@@ -1407,8 +1417,6 @@ func GetAllPendingFFmpegCommandsJSON() (string, error) {
 
 // ==================== EXTENSION CUSTOM SEARCH ====================
 
-// EnrichTrackWithExtensionJSON enriches track metadata using the source extension
-// This is called lazily before download starts, allowing extension to fetch real ISRC etc.
 func EnrichTrackWithExtensionJSON(extensionID, trackJSON string) (string, error) {
 	manager := GetExtensionManager()
 	ext, err := manager.GetExtension(extensionID)
@@ -1439,7 +1447,6 @@ func EnrichTrackWithExtensionJSON(extensionID, trackJSON string) (string, error)
 	return string(jsonBytes), nil
 }
 
-// CustomSearchWithExtensionJSON performs custom search using an extension
 func CustomSearchWithExtensionJSON(extensionID, query string, optionsJSON string) (string, error) {
 	manager := GetExtensionManager()
 	ext, err := manager.GetExtension(extensionID)
@@ -1479,8 +1486,8 @@ func CustomSearchWithExtensionJSON(extensionID, query string, optionsJSON string
 			"disc_number":  track.DiscNumber,
 			"isrc":         track.ISRC,
 			"provider_id":  track.ProviderID,
-			"item_type":    track.ItemType,  // track, album, or playlist
-			"album_type":   track.AlbumType, // album, single, ep, compilation
+			"item_type":    track.ItemType,
+			"album_type":   track.AlbumType,
 		}
 	}
 
@@ -1492,7 +1499,6 @@ func CustomSearchWithExtensionJSON(extensionID, query string, optionsJSON string
 	return string(jsonBytes), nil
 }
 
-// GetSearchProvidersJSON returns all extensions that provide custom search
 func GetSearchProvidersJSON() (string, error) {
 	manager := GetExtensionManager()
 	providers := manager.GetSearchProviders()
@@ -1577,7 +1583,6 @@ func HandleURLWithExtensionJSON(url string) (string, error) {
 		response["tracks"] = tracks
 	}
 
-	// Add album info if present
 	if result.Album != nil {
 		response["album"] = map[string]interface{}{
 			"id":           result.Album.ID,
@@ -1656,8 +1661,6 @@ func HandleURLWithExtensionJSON(url string) (string, error) {
 	return string(jsonBytes), nil
 }
 
-// FindURLHandlerJSON finds an extension that can handle the given URL
-// Returns extension ID or empty string if none found
 func FindURLHandlerJSON(url string) string {
 	manager := GetExtensionManager()
 	handler := manager.FindURLHandler(url)
@@ -1667,7 +1670,6 @@ func FindURLHandlerJSON(url string) string {
 	return handler.extension.ID
 }
 
-// GetAlbumWithExtensionJSON gets album tracks using an extension
 func GetAlbumWithExtensionJSON(extensionID, albumID string) (string, error) {
 	manager := GetExtensionManager()
 	ext, err := manager.GetExtension(extensionID)
@@ -1698,6 +1700,10 @@ func GetAlbumWithExtensionJSON(extensionID, albumID string) (string, error) {
 		if trackCover == "" {
 			trackCover = album.CoverURL
 		}
+		trackNum := track.TrackNumber
+		if trackNum == 0 {
+			trackNum = i + 1
+		}
 		tracks[i] = map[string]interface{}{
 			"id":           track.ID,
 			"name":         track.Name,
@@ -1707,7 +1713,7 @@ func GetAlbumWithExtensionJSON(extensionID, albumID string) (string, error) {
 			"duration_ms":  track.DurationMS,
 			"cover_url":    trackCover,
 			"release_date": track.ReleaseDate,
-			"track_number": track.TrackNumber,
+			"track_number": trackNum,
 			"disc_number":  track.DiscNumber,
 			"isrc":         track.ISRC,
 			"provider_id":  track.ProviderID,
@@ -1737,7 +1743,6 @@ func GetAlbumWithExtensionJSON(extensionID, albumID string) (string, error) {
 	return string(jsonBytes), nil
 }
 
-// GetPlaylistWithExtensionJSON gets playlist tracks using an extension
 func GetPlaylistWithExtensionJSON(extensionID, playlistID string) (string, error) {
 	manager := GetExtensionManager()
 	ext, err := manager.GetExtension(extensionID)
@@ -1829,7 +1834,6 @@ func GetPlaylistWithExtensionJSON(extensionID, playlistID string) (string, error
 	return string(jsonBytes), nil
 }
 
-// GetArtistWithExtensionJSON gets artist info and albums using an extension
 func GetArtistWithExtensionJSON(extensionID, artistID string) (string, error) {
 	manager := GetExtensionManager()
 	ext, err := manager.GetExtension(extensionID)
@@ -1873,7 +1877,6 @@ func GetArtistWithExtensionJSON(extensionID, artistID string) (string, error) {
 		"provider_id": artist.ProviderID,
 	}
 
-	// Add header image if present
 	if artist.HeaderImage != "" {
 		response["header_image"] = artist.HeaderImage
 	}
@@ -1882,7 +1885,6 @@ func GetArtistWithExtensionJSON(extensionID, artistID string) (string, error) {
 		response["listeners"] = artist.Listeners
 	}
 
-	// Add top tracks if present
 	if len(artist.TopTracks) > 0 {
 		topTracks := make([]map[string]interface{}, len(artist.TopTracks))
 		for i, track := range artist.TopTracks {
@@ -1913,7 +1915,6 @@ func GetArtistWithExtensionJSON(extensionID, artistID string) (string, error) {
 	return string(jsonBytes), nil
 }
 
-// GetURLHandlersJSON returns all extensions that handle custom URLs
 func GetURLHandlersJSON() (string, error) {
 	manager := GetExtensionManager()
 	handlers := manager.GetURLHandlers()
@@ -1957,7 +1958,6 @@ func RunPostProcessingJSON(filePath, metadataJSON string) (string, error) {
 	return string(jsonBytes), nil
 }
 
-// GetPostProcessingProvidersJSON returns all extensions that provide post-processing
 func GetPostProcessingProvidersJSON() (string, error) {
 	manager := GetExtensionManager()
 	providers := manager.GetPostProcessingProviders()
@@ -1990,13 +1990,11 @@ func GetPostProcessingProvidersJSON() (string, error) {
 	return string(jsonBytes), nil
 }
 
-// InitExtensionStoreJSON initializes the extension store with cache directory
 func InitExtensionStoreJSON(cacheDir string) error {
 	InitExtensionStore(cacheDir)
 	return nil
 }
 
-// GetStoreExtensionsJSON returns all extensions from the store with installation status
 func GetStoreExtensionsJSON(forceRefresh bool) (string, error) {
 	store := GetExtensionStore()
 	if store == nil {
@@ -2020,7 +2018,6 @@ func GetStoreExtensionsJSON(forceRefresh bool) (string, error) {
 	return string(jsonBytes), nil
 }
 
-// SearchStoreExtensionsJSON searches extensions in the store
 func SearchStoreExtensionsJSON(query, category string) (string, error) {
 	store := GetExtensionStore()
 	if store == nil {
@@ -2040,7 +2037,6 @@ func SearchStoreExtensionsJSON(query, category string) (string, error) {
 	return string(jsonBytes), nil
 }
 
-// GetStoreCategoriesJSON returns all available categories
 func GetStoreCategoriesJSON() (string, error) {
 	store := GetExtensionStore()
 	if store == nil {
@@ -2056,8 +2052,6 @@ func GetStoreCategoriesJSON() (string, error) {
 	return string(jsonBytes), nil
 }
 
-// DownloadStoreExtensionJSON downloads an extension from the store
-// Returns the path to the downloaded file
 func DownloadStoreExtensionJSON(extensionID, destDir string) (string, error) {
 	store := GetExtensionStore()
 	if store == nil {
@@ -2073,7 +2067,6 @@ func DownloadStoreExtensionJSON(extensionID, destDir string) (string, error) {
 	return destPath, nil
 }
 
-// ClearStoreCacheJSON clears the store cache
 func ClearStoreCacheJSON() error {
 	store := GetExtensionStore()
 	if store == nil {
@@ -2124,12 +2117,33 @@ func callExtensionFunctionJSON(extensionID, functionName string, timeout time.Du
 	return string(jsonBytes), nil
 }
 
-// GetExtensionHomeFeedJSON calls getHomeFeed on any extension that supports it
 func GetExtensionHomeFeedJSON(extensionID string) (string, error) {
 	return callExtensionFunctionJSON(extensionID, "getHomeFeed", 60*time.Second)
 }
 
-// GetExtensionBrowseCategoriesJSON calls getBrowseCategories on any extension that supports it
 func GetExtensionBrowseCategoriesJSON(extensionID string) (string, error) {
 	return callExtensionFunctionJSON(extensionID, "getBrowseCategories", 30*time.Second)
 }
+
+// ==================== LOCAL LIBRARY SCANNING ====================
+
+// SetLibraryCoverCacheDirJSON sets the directory for caching extracted cover art
+func SetLibraryCoverCacheDirJSON(cacheDir string) {
+	SetLibraryCoverCacheDir(cacheDir)
+}
+
+func ScanLibraryFolderJSON(folderPath string) (string, error) {
+	return ScanLibraryFolder(folderPath)
+}
+
+func GetLibraryScanProgressJSON() string {
+	return GetLibraryScanProgress()
+}
+
+func CancelLibraryScanJSON() {
+	CancelLibraryScan()
+}
+
+func ReadAudioMetadataJSON(filePath string) (string, error) {
+	return ReadAudioMetadata(filePath)
+}

go_backend/extension_manager.go

@@ -47,7 +47,7 @@ type LoadedExtension struct {
 	ID        string             `json:"id"`
 	Manifest  *ExtensionManifest `json:"manifest"`
 	VM        *goja.Runtime      `json:"-"`
-	VMMu      sync.Mutex         `json:"-"` // Mutex to prevent concurrent VM access
+	VMMu      sync.Mutex         `json:"-"`
 	Enabled   bool               `json:"enabled"`
 	Error     string             `json:"error,omitempty"`
 	DataDir   string             `json:"data_dir"`
@@ -55,12 +55,11 @@ type LoadedExtension struct {
 	IconPath  string             `json:"icon_path"`
 }
 
-// ExtensionManager manages all loaded extensions
 type ExtensionManager struct {
 	mu            sync.RWMutex
 	extensions    map[string]*LoadedExtension
-	extensionsDir string // Base directory for extensions
-	dataDir       string // Base directory for extension data
+	extensionsDir string
+	dataDir       string
 }
 
 var (
@@ -99,7 +98,6 @@ func (m *ExtensionManager) LoadExtensionFromFile(filePath string) (*LoadedExtens
 		return nil, fmt.Errorf("Invalid file format. Please select a .spotiflac-ext file")
 	}
 
-	// Open the zip file
 	zipReader, err := zip.OpenReader(filePath)
 	if err != nil {
 		return nil, fmt.Errorf("Cannot open extension file. The file may be corrupted or not a valid extension package")
@@ -222,7 +220,6 @@ func (m *ExtensionManager) LoadExtensionFromFile(filePath string) (*LoadedExtens
 		SourceDir: extDir,
 	}
 
-	// Initialize Goja VM
 	if err := m.initializeVM(ext); err != nil {
 		ext.Error = err.Error()
 		ext.Enabled = false
@@ -269,13 +266,11 @@ func (m *ExtensionManager) initializeVM(ext *LoadedExtension) error {
 		return goja.Undefined()
 	})
 
-	// Run the extension code
 	_, err = vm.RunString(string(jsCode))
 	if err != nil {
 		return fmt.Errorf("failed to execute extension code: %w", err)
 	}
 
-	// Verify extension was registered
 	if registeredExtension == nil || goja.IsUndefined(registeredExtension) {
 		return fmt.Errorf("extension did not call registerExtension()")
 	}
@@ -283,7 +278,6 @@ func (m *ExtensionManager) initializeVM(ext *LoadedExtension) error {
 	return nil
 }
 
-// UnloadExtension unloads an extension by ID
 func (m *ExtensionManager) UnloadExtension(extensionID string) error {
 	m.mu.Lock()
 	defer m.mu.Unlock()
@@ -293,9 +287,7 @@ func (m *ExtensionManager) UnloadExtension(extensionID string) error {
 		return fmt.Errorf("Extension not found")
 	}
 
-	// Call cleanup if VM is initialized
 	if ext.VM != nil {
-		// Try to call cleanup function
 		cleanup, err := ext.VM.RunString("typeof extension !== 'undefined' && typeof extension.cleanup === 'function' ? extension.cleanup() : null")
 		if err != nil {
 			GoLog("[Extension] Error calling cleanup for %s: %v\n", extensionID, err)
@@ -304,14 +296,12 @@ func (m *ExtensionManager) UnloadExtension(extensionID string) error {
 		}
 	}
 
-	// Remove from registry
 	delete(m.extensions, extensionID)
 	GoLog("[Extension] Unloaded extension: %s\n", extensionID)
 
 	return nil
 }
 
-// Returns error if extension not found (gomobile compatible)
 func (m *ExtensionManager) GetExtension(extensionID string) (*LoadedExtension, error) {
 	m.mu.RLock()
 	defer m.mu.RUnlock()
@@ -323,7 +313,6 @@ func (m *ExtensionManager) GetExtension(extensionID string) (*LoadedExtension, e
 	return ext, nil
 }
 
-// GetAllExtensions returns all loaded extensions
 func (m *ExtensionManager) GetAllExtensions() []*LoadedExtension {
 	m.mu.RLock()
 	defer m.mu.RUnlock()
@@ -347,7 +336,6 @@ func (m *ExtensionManager) SetExtensionEnabled(extensionID string, enabled bool)
 	ext.Enabled = enabled
 	GoLog("[Extension] %s %s\n", extensionID, map[bool]string{true: "enabled", false: "disabled"}[enabled])
 
-	// Persist enabled state to settings store
 	store := GetExtensionSettingsStore()
 	if err := store.Set(extensionID, "_enabled", enabled); err != nil {
 		GoLog("[Extension] Failed to persist enabled state for %s: %v\n", extensionID, err)
@@ -356,7 +344,6 @@ func (m *ExtensionManager) SetExtensionEnabled(extensionID string, enabled bool)
 	return nil
 }
 
-// LoadExtensionsFromDirectory scans a directory and loads all valid extensions
 func (m *ExtensionManager) LoadExtensionsFromDirectory(dirPath string) ([]string, []error) {
 	var loaded []string
 	var errors []error
@@ -443,7 +430,6 @@ func (m *ExtensionManager) loadExtensionFromDirectory(dirPath string) (*LoadedEx
 		}
 	}
 
-	// Initialize Goja VM
 	if err := m.initializeVM(ext); err != nil {
 		ext.Error = err.Error()
 		ext.Enabled = false
@@ -456,19 +442,16 @@ func (m *ExtensionManager) loadExtensionFromDirectory(dirPath string) (*LoadedEx
 	return ext, nil
 }
 
-// RemoveExtension completely removes an extension (unload + delete files)
 func (m *ExtensionManager) RemoveExtension(extensionID string) error {
 	ext, err := m.GetExtension(extensionID)
 	if err != nil {
 		return err
 	}
 
-	// Unload first
 	if err := m.UnloadExtension(extensionID); err != nil {
 		return err
 	}
 
-	// Remove source directory
 	if ext.SourceDir != "" {
 		if err := os.RemoveAll(ext.SourceDir); err != nil {
 			GoLog("[Extension] Warning: failed to remove source dir: %v\n", err)
@@ -490,7 +473,6 @@ func (m *ExtensionManager) UpgradeExtension(filePath string) (*LoadedExtension,
 		return nil, fmt.Errorf("Invalid file format. Please select a .spotiflac-ext file")
 	}
 
-	// Open the zip file
 	zipReader, err := zip.OpenReader(filePath)
 	if err != nil {
 		return nil, fmt.Errorf("Cannot open extension file. The file may be corrupted or not a valid extension package")
@@ -554,11 +536,9 @@ func (m *ExtensionManager) UpgradeExtension(filePath string) (*LoadedExtension,
 	extDir := existing.SourceDir
 	wasEnabled := existing.Enabled
 
-	// Cleanup and unload existing extension
 	m.CleanupExtension(existing.ID)
 	m.UnloadExtension(existing.ID)
 
-	// Remove old source files but keep data directory
 	if extDir != "" {
 		if err := os.RemoveAll(extDir); err != nil {
 			GoLog("[Extension] Warning: failed to remove old source dir: %v\n", err)
@@ -637,16 +617,14 @@ type ExtensionUpgradeInfo struct {
 	IsInstalled    bool   `json:"is_installed"`
 }
 
-// checkExtensionUpgradeInternal checks if a package file is an upgrade for an existing extension
-// Internal function that returns struct
 func (m *ExtensionManager) checkExtensionUpgradeInternal(filePath string) (*ExtensionUpgradeInfo, error) {
 	// Validate file extension
 	if !strings.HasSuffix(strings.ToLower(filePath), ".spotiflac-ext") {
-		return nil, fmt.Errorf("Invalid file format")
+		return nil, fmt.Errorf("Invalid file format. Please select a .spotiflac-ext file")
 	}
 
-	// Open the zip file
 	zipReader, err := zip.OpenReader(filePath)
+
 	if err != nil {
 		return nil, fmt.Errorf("Cannot open extension file")
 	}
@@ -714,7 +692,6 @@ func (m *ExtensionManager) CheckExtensionUpgradeJSON(filePath string) (string, e
 	return string(jsonBytes), nil
 }
 
-// GetInstalledExtensionsJSON returns all extensions as JSON for Flutter
 func (m *ExtensionManager) GetInstalledExtensionsJSON() (string, error) {
 	extensions := m.GetAllExtensions()
 
@@ -809,8 +786,6 @@ func (m *ExtensionManager) GetInstalledExtensionsJSON() (string, error) {
 	return string(jsonBytes), nil
 }
 
-// ==================== Extension Lifecycle ====================
-
 func (m *ExtensionManager) InitializeExtension(extensionID string, settings map[string]interface{}) error {
 	m.mu.Lock()
 	defer m.mu.Unlock()
@@ -923,7 +898,6 @@ func (m *ExtensionManager) CleanupExtension(extensionID string) error {
 	return nil
 }
 
-// UnloadAllExtensions unloads all extensions gracefully
 func (m *ExtensionManager) UnloadAllExtensions() {
 	m.mu.Lock()
 	extensionIDs := make([]string, 0, len(m.extensions))
@@ -940,7 +914,6 @@ func (m *ExtensionManager) UnloadAllExtensions() {
 	GoLog("[Extension] All extensions unloaded\n")
 }
 
-// The function is called as extension.<actionName>() and can return a result
 func (m *ExtensionManager) InvokeAction(extensionID string, actionName string) (map[string]interface{}, error) {
 	m.mu.Lock()
 	defer m.mu.Unlock()

go_backend/extension_manifest.go

@@ -7,7 +7,6 @@ import (
 	"strings"
 )
 
-// ExtensionType represents the type of extension
 type ExtensionType string
 
 const (
@@ -15,7 +14,6 @@ const (
 	ExtensionTypeDownloadProvider ExtensionType = "download_provider"
 )
 
-// SettingType represents the type of a setting field
 type SettingType string
 
 const (
@@ -26,14 +24,12 @@ const (
 	SettingTypeButton SettingType = "button" // Action button that calls a JS function
 )
 
-// ExtensionPermissions defines what resources an extension can access
 type ExtensionPermissions struct {
-	Network []string `json:"network"` // List of allowed domains
-	Storage bool     `json:"storage"` // Whether extension can use storage API
-	File    bool     `json:"file"`    // Whether extension can use file API
+	Network []string `json:"network"`
+	Storage bool     `json:"storage"`
+	File    bool     `json:"file"`
 }
 
-// ExtensionSetting defines a configurable setting for an extension
 type ExtensionSetting struct {
 	Key         string      `json:"key"`
 	Type        SettingType `json:"type"`
@@ -42,19 +38,17 @@ type ExtensionSetting struct {
 	Required    bool        `json:"required,omitempty"`
 	Secret      bool        `json:"secret,omitempty"`
 	Default     interface{} `json:"default,omitempty"`
-	Options     []string    `json:"options,omitempty"` // For select type
-	Action      string      `json:"action,omitempty"`  // For button type: JS function name to call (e.g., "startLogin")
+	Options     []string    `json:"options,omitempty"`
+	Action      string      `json:"action,omitempty"`
 }
 
-// QualityOption represents a quality option for download providers
 type QualityOption struct {
-	ID          string                   `json:"id"`                 // Unique identifier (e.g., "mp3_320", "opus_128")
-	Label       string                   `json:"label"`              // Display name (e.g., "MP3 320kbps")
-	Description string                   `json:"description"`        // Optional description (e.g., "Best quality MP3")
-	Settings    []QualitySpecificSetting `json:"settings,omitempty"` // Quality-specific settings
+	ID          string                   `json:"id"`
+	Label       string                   `json:"label"`
+	Description string                   `json:"description"`
+	Settings    []QualitySpecificSetting `json:"settings,omitempty"`
 }
 
-// QualitySpecificSetting represents a setting that's specific to a quality option
 type QualitySpecificSetting struct {
 	Key         string      `json:"key"`
 	Type        SettingType `json:"type"`
@@ -63,49 +57,50 @@ type QualitySpecificSetting struct {
 	Required    bool        `json:"required,omitempty"`
 	Secret      bool        `json:"secret,omitempty"`
 	Default     interface{} `json:"default,omitempty"`
-	Options     []string    `json:"options,omitempty"` // For select type
+	Options     []string    `json:"options,omitempty"`
+}
+
+type SearchFilter struct {
+	ID    string `json:"id"`
+	Label string `json:"label,omitempty"`
+	Icon  string `json:"icon,omitempty"`
 }
 
-// SearchBehaviorConfig defines custom search behavior for an extension
 type SearchBehaviorConfig struct {
-	Enabled         bool   `json:"enabled"`                   // Whether extension provides custom search
-	Placeholder     string `json:"placeholder,omitempty"`     // Placeholder text for search box
-	Primary         bool   `json:"primary,omitempty"`         // If true, show as primary search tab
-	Icon            string `json:"icon,omitempty"`            // Icon for search tab
-	ThumbnailRatio  string `json:"thumbnailRatio,omitempty"`  // Thumbnail aspect ratio: "square" (1:1), "wide" (16:9), "portrait" (2:3)
-	ThumbnailWidth  int    `json:"thumbnailWidth,omitempty"`  // Custom thumbnail width in pixels
-	ThumbnailHeight int    `json:"thumbnailHeight,omitempty"` // Custom thumbnail height in pixels
+	Enabled         bool           `json:"enabled"`
+	Placeholder     string         `json:"placeholder,omitempty"`
+	Primary         bool           `json:"primary,omitempty"`
+	Icon            string         `json:"icon,omitempty"`
+	ThumbnailRatio  string         `json:"thumbnailRatio,omitempty"`
+	ThumbnailWidth  int            `json:"thumbnailWidth,omitempty"`
+	ThumbnailHeight int            `json:"thumbnailHeight,omitempty"`
+	Filters         []SearchFilter `json:"filters,omitempty"`
 }
 
-// URLHandlerConfig defines custom URL handling for an extension
 type URLHandlerConfig struct {
-	Enabled  bool     `json:"enabled"`            // Whether extension handles URLs
-	Patterns []string `json:"patterns,omitempty"` // URL patterns to match (e.g., "music.youtube.com", "soundcloud.com")
+	Enabled  bool     `json:"enabled"`
+	Patterns []string `json:"patterns,omitempty"`
 }
 
-// TrackMatchingConfig defines custom track matching behavior
 type TrackMatchingConfig struct {
-	CustomMatching    bool   `json:"customMatching"`              // Whether extension handles matching
-	Strategy          string `json:"strategy,omitempty"`          // "isrc", "name", "duration", "custom"
-	DurationTolerance int    `json:"durationTolerance,omitempty"` // Tolerance in seconds for duration matching
+	CustomMatching    bool   `json:"customMatching"`
+	Strategy          string `json:"strategy,omitempty"`
+	DurationTolerance int    `json:"durationTolerance,omitempty"`
 }
 
-// PostProcessingHook defines a post-processing hook
 type PostProcessingHook struct {
-	ID               string   `json:"id"`                         // Unique identifier
-	Name             string   `json:"name"`                       // Display name
-	Description      string   `json:"description,omitempty"`      // Description
-	DefaultEnabled   bool     `json:"defaultEnabled,omitempty"`   // Whether enabled by default
-	SupportedFormats []string `json:"supportedFormats,omitempty"` // Supported file formats (e.g., ["flac", "mp3"])
+	ID               string   `json:"id"`
+	Name             string   `json:"name"`
+	Description      string   `json:"description,omitempty"`
+	DefaultEnabled   bool     `json:"defaultEnabled,omitempty"`
+	SupportedFormats []string `json:"supportedFormats,omitempty"`
 }
 
-// PostProcessingConfig defines post-processing capabilities
 type PostProcessingConfig struct {
-	Enabled bool                 `json:"enabled"`         // Whether extension provides post-processing
-	Hooks   []PostProcessingHook `json:"hooks,omitempty"` // Available hooks
+	Enabled bool                 `json:"enabled"`
+	Hooks   []PostProcessingHook `json:"hooks,omitempty"`
 }
 
-// ExtensionManifest represents the manifest.json of an extension
 type ExtensionManifest struct {
 	Name                   string                 `json:"name"`
 	DisplayName            string                 `json:"displayName"`
@@ -113,22 +108,21 @@ type ExtensionManifest struct {
 	Author                 string                 `json:"author"`
 	Description            string                 `json:"description"`
 	Homepage               string                 `json:"homepage,omitempty"`
-	Icon                   string                 `json:"icon,omitempty"` // Icon filename (e.g., "icon.png")
+	Icon                   string                 `json:"icon,omitempty"`
 	Types                  []ExtensionType        `json:"type"`
 	Permissions            ExtensionPermissions   `json:"permissions"`
 	Settings               []ExtensionSetting     `json:"settings,omitempty"`
-	QualityOptions         []QualityOption        `json:"qualityOptions,omitempty"` // Custom quality options for download providers
+	QualityOptions         []QualityOption        `json:"qualityOptions,omitempty"`
 	MinAppVersion          string                 `json:"minAppVersion,omitempty"`
-	SkipMetadataEnrichment bool                   `json:"skipMetadataEnrichment,omitempty"` // If true, don't enrich metadata from Deezer/Spotify
-	SkipBuiltInFallback    bool                   `json:"skipBuiltInFallback,omitempty"`    // If true, don't fallback to built-in providers (tidal/qobuz/amazon)
-	SearchBehavior         *SearchBehaviorConfig  `json:"searchBehavior,omitempty"`         // Custom search behavior
-	URLHandler             *URLHandlerConfig      `json:"urlHandler,omitempty"`             // Custom URL handling
-	TrackMatching          *TrackMatchingConfig   `json:"trackMatching,omitempty"`          // Custom track matching
-	PostProcessing         *PostProcessingConfig  `json:"postProcessing,omitempty"`         // Post-processing hooks
-	Capabilities           map[string]interface{} `json:"capabilities,omitempty"`           // Extension capabilities (homeFeed, browseCategories, etc.)
+	SkipMetadataEnrichment bool                   `json:"skipMetadataEnrichment,omitempty"`
+	SkipBuiltInFallback    bool                   `json:"skipBuiltInFallback,omitempty"`
+	SearchBehavior         *SearchBehaviorConfig  `json:"searchBehavior,omitempty"`
+	URLHandler             *URLHandlerConfig      `json:"urlHandler,omitempty"`
+	TrackMatching          *TrackMatchingConfig   `json:"trackMatching,omitempty"`
+	PostProcessing         *PostProcessingConfig  `json:"postProcessing,omitempty"`
+	Capabilities           map[string]interface{} `json:"capabilities,omitempty"`
 }
 
-// ManifestValidationError represents a validation error in the manifest
 type ManifestValidationError struct {
 	Field   string
 	Message string
@@ -138,7 +132,6 @@ func (e *ManifestValidationError) Error() string {
 	return fmt.Sprintf("manifest validation error: %s - %s", e.Field, e.Message)
 }
 
-// ParseManifest parses and validates a manifest from JSON bytes
 func ParseManifest(data []byte) (*ExtensionManifest, error) {
 	var manifest ExtensionManifest
 	if err := json.Unmarshal(data, &manifest); err != nil {
@@ -182,7 +175,6 @@ func (m *ExtensionManifest) Validate() error {
 		}
 	}
 
-	// Validate settings if present
 	for i, setting := range m.Settings {
 		if strings.TrimSpace(setting.Key) == "" {
 			return &ManifestValidationError{
@@ -217,7 +209,6 @@ func (m *ExtensionManifest) Validate() error {
 	return nil
 }
 
-// HasType checks if the extension has a specific type
 func (m *ExtensionManifest) HasType(t ExtensionType) bool {
 	for _, et := range m.Types {
 		if et == t {
@@ -227,17 +218,14 @@ func (m *ExtensionManifest) HasType(t ExtensionType) bool {
 	return false
 }
 
-// IsMetadataProvider returns true if extension provides metadata
 func (m *ExtensionManifest) IsMetadataProvider() bool {
 	return m.HasType(ExtensionTypeMetadataProvider)
 }
 
-// IsDownloadProvider returns true if extension provides downloads
 func (m *ExtensionManifest) IsDownloadProvider() bool {
 	return m.HasType(ExtensionTypeDownloadProvider)
 }
 
-// IsDomainAllowed checks if a domain is in the allowed network permissions
 func (m *ExtensionManifest) IsDomainAllowed(domain string) bool {
 	domain = strings.ToLower(strings.TrimSpace(domain))
 	for _, allowed := range m.Permissions.Network {
@@ -247,7 +235,7 @@ func (m *ExtensionManifest) IsDomainAllowed(domain string) bool {
 		}
 		// Support wildcard subdomains (e.g., *.example.com)
 		if strings.HasPrefix(allowed, "*.") {
-			suffix := allowed[1:] // Remove the *
+			suffix := allowed[1:]
 			if strings.HasSuffix(domain, suffix) {
 				return true
 			}
@@ -256,27 +244,22 @@ func (m *ExtensionManifest) IsDomainAllowed(domain string) bool {
 	return false
 }
 
-// HasCustomSearch returns true if extension provides custom search
 func (m *ExtensionManifest) HasCustomSearch() bool {
 	return m.SearchBehavior != nil && m.SearchBehavior.Enabled
 }
 
-// HasCustomMatching returns true if extension provides custom track matching
 func (m *ExtensionManifest) HasCustomMatching() bool {
 	return m.TrackMatching != nil && m.TrackMatching.CustomMatching
 }
 
-// HasPostProcessing returns true if extension provides post-processing
 func (m *ExtensionManifest) HasPostProcessing() bool {
 	return m.PostProcessing != nil && m.PostProcessing.Enabled
 }
 
-// HasURLHandler returns true if extension handles custom URLs
 func (m *ExtensionManifest) HasURLHandler() bool {
 	return m.URLHandler != nil && m.URLHandler.Enabled && len(m.URLHandler.Patterns) > 0
 }
 
-// MatchesURL checks if a URL matches any of the extension's URL patterns
 func (m *ExtensionManifest) MatchesURL(urlStr string) bool {
 	if !m.HasURLHandler() {
 		return false
@@ -285,7 +268,6 @@ func (m *ExtensionManifest) MatchesURL(urlStr string) bool {
 	urlStr = strings.ToLower(strings.TrimSpace(urlStr))
 	for _, pattern := range m.URLHandler.Patterns {
 		pattern = strings.ToLower(strings.TrimSpace(pattern))
-		// Check if URL contains the pattern (host match)
 		if strings.Contains(urlStr, pattern) {
 			return true
 		}
@@ -293,7 +275,6 @@ func (m *ExtensionManifest) MatchesURL(urlStr string) bool {
 	return false
 }
 
-// GetPostProcessingHooks returns all post-processing hooks
 func (m *ExtensionManifest) GetPostProcessingHooks() []PostProcessingHook {
 	if m.PostProcessing == nil {
 		return nil
@@ -301,7 +282,6 @@ func (m *ExtensionManifest) GetPostProcessingHooks() []PostProcessingHook {
 	return m.PostProcessing.Hooks
 }
 
-// ToJSON serializes the manifest to JSON
 func (m *ExtensionManifest) ToJSON() ([]byte, error) {
 	return json.Marshal(m)
 }

go_backend/extension_providers.go

@@ -25,27 +25,26 @@ type ExtTrackMetadata struct {
 	AlbumArtist string `json:"album_artist,omitempty"`
 	DurationMS  int    `json:"duration_ms"`
 	CoverURL    string `json:"cover_url,omitempty"`
-	Images      string `json:"images,omitempty"` // Alternative field for cover URL (used by some extensions)
+	Images      string `json:"images,omitempty"`
 	ReleaseDate string `json:"release_date,omitempty"`
 	TrackNumber int    `json:"track_number,omitempty"`
 	DiscNumber  int    `json:"disc_number,omitempty"`
 	ISRC        string `json:"isrc,omitempty"`
 	ProviderID  string `json:"provider_id"`
-	ItemType    string `json:"item_type,omitempty"`  // track, album, or playlist - for extension search results
-	AlbumType   string `json:"album_type,omitempty"` // album, single, ep, compilation
-	// Enrichment fields from Odesli/song.link
+	ItemType    string `json:"item_type,omitempty"`
+	AlbumType   string `json:"album_type,omitempty"`
+
 	TidalID       string            `json:"tidal_id,omitempty"`
 	QobuzID       string            `json:"qobuz_id,omitempty"`
 	DeezerID      string            `json:"deezer_id,omitempty"`
 	SpotifyID     string            `json:"spotify_id,omitempty"`
-	ExternalLinks map[string]string `json:"external_links,omitempty"` // service -> URL mapping
-	// Extended metadata from enrichment (can come from Deezer, Spotify, etc.)
-	Label     string `json:"label,omitempty"`     // Record label
-	Copyright string `json:"copyright,omitempty"` // Copyright information
-	Genre     string `json:"genre,omitempty"`     // Music genre(s)
+	ExternalLinks map[string]string `json:"external_links,omitempty"`
+
+	Label     string `json:"label,omitempty"`
+	Copyright string `json:"copyright,omitempty"`
+	Genre     string `json:"genre,omitempty"`
 }
 
-// ResolvedCoverURL returns the cover URL, checking both CoverURL and Images fields
 func (t *ExtTrackMetadata) ResolvedCoverURL() string {
 	if t.CoverURL != "" {
 		return t.CoverURL
@@ -53,7 +52,6 @@ func (t *ExtTrackMetadata) ResolvedCoverURL() string {
 	return t.Images
 }
 
-// ExtAlbumMetadata represents album metadata from an extension
 type ExtAlbumMetadata struct {
 	ID          string             `json:"id"`
 	Name        string             `json:"name"`
@@ -67,34 +65,28 @@ type ExtAlbumMetadata struct {
 	ProviderID  string             `json:"provider_id"`
 }
 
-// ExtArtistMetadata represents artist metadata from an extension
 type ExtArtistMetadata struct {
 	ID          string             `json:"id"`
 	Name        string             `json:"name"`
 	ImageURL    string             `json:"image_url,omitempty"`
-	HeaderImage string             `json:"header_image,omitempty"` // Header image for artist page background
-	Listeners   int                `json:"listeners,omitempty"`    // Monthly listeners
+	HeaderImage string             `json:"header_image,omitempty"`
+	Listeners   int                `json:"listeners,omitempty"`
 	Albums      []ExtAlbumMetadata `json:"albums,omitempty"`
-	TopTracks   []ExtTrackMetadata `json:"top_tracks,omitempty"` // Popular tracks
+	TopTracks   []ExtTrackMetadata `json:"top_tracks,omitempty"`
 	ProviderID  string             `json:"provider_id"`
 }
 
-// ExtSearchResult represents search results from an extension
 type ExtSearchResult struct {
 	Tracks []ExtTrackMetadata `json:"tracks"`
 	Total  int                `json:"total"`
 }
 
-// ==================== Download Types ====================
-
-// ExtAvailabilityResult represents availability check result
 type ExtAvailabilityResult struct {
 	Available bool   `json:"available"`
 	Reason    string `json:"reason,omitempty"`
 	TrackID   string `json:"track_id,omitempty"`
 }
 
-// ExtDownloadURLResult represents download URL info
 type ExtDownloadURLResult struct {
 	URL        string `json:"url"`
 	Format     string `json:"format"`
@@ -102,7 +94,6 @@ type ExtDownloadURLResult struct {
 	SampleRate int    `json:"sample_rate,omitempty"`
 }
 
-// ExtDownloadResult represents download result from an extension
 type ExtDownloadResult struct {
 	Success      bool   `json:"success"`
 	FilePath     string `json:"file_path,omitempty"`
@@ -110,7 +101,7 @@ type ExtDownloadResult struct {
 	SampleRate   int    `json:"sample_rate,omitempty"`
 	ErrorMessage string `json:"error_message,omitempty"`
 	ErrorType    string `json:"error_type,omitempty"`
-	// Metadata returned by extension (optional - if provided, can skip enrichment)
+
 	Title       string `json:"title,omitempty"`
 	Artist      string `json:"artist,omitempty"`
 	Album       string `json:"album,omitempty"`
@@ -122,15 +113,11 @@ type ExtDownloadResult struct {
 	ISRC        string `json:"isrc,omitempty"`
 }
 
-// ==================== Provider Wrapper ====================
-
-// ExtensionProviderWrapper wraps an extension to call its provider methods
 type ExtensionProviderWrapper struct {
 	extension *LoadedExtension
 	vm        *goja.Runtime
 }
 
-// NewExtensionProviderWrapper creates a new provider wrapper
 func NewExtensionProviderWrapper(ext *LoadedExtension) *ExtensionProviderWrapper {
 	return &ExtensionProviderWrapper{
 		extension: ext,
@@ -138,9 +125,6 @@ func NewExtensionProviderWrapper(ext *LoadedExtension) *ExtensionProviderWrapper
 	}
 }
 
-// ==================== Metadata Provider Methods ====================
-
-// SearchTracks searches for tracks using the extension
 func (p *ExtensionProviderWrapper) SearchTracks(query string, limit int) (*ExtSearchResult, error) {
 	if !p.extension.Manifest.IsMetadataProvider() {
 		return nil, fmt.Errorf("extension '%s' is not a metadata provider", p.extension.ID)
@@ -150,11 +134,9 @@ func (p *ExtensionProviderWrapper) SearchTracks(query string, limit int) (*ExtSe
 		return nil, fmt.Errorf("extension '%s' is disabled", p.extension.ID)
 	}
 
-	// Lock VM to prevent concurrent access
 	p.extension.VMMu.Lock()
 	defer p.extension.VMMu.Unlock()
 
-	// Call extension's searchTracks function
 	script := fmt.Sprintf(`
 		(function() {
 			if (typeof extension !== 'undefined' && typeof extension.searchTracks === 'function') {
@@ -176,7 +158,6 @@ func (p *ExtensionProviderWrapper) SearchTracks(query string, limit int) (*ExtSe
 		return nil, fmt.Errorf("searchTracks returned null")
 	}
 
-	// Convert result to Go struct
 	exported := result.Export()
 	jsonBytes, err := json.Marshal(exported)
 	if err != nil {
@@ -185,14 +166,11 @@ func (p *ExtensionProviderWrapper) SearchTracks(query string, limit int) (*ExtSe
 
 	var searchResult ExtSearchResult
 
-	// Try to parse as ExtSearchResult object first
 	if err := json.Unmarshal(jsonBytes, &searchResult); err != nil {
-		// If that fails, try parsing as array of tracks directly
 		var tracks []ExtTrackMetadata
 		if arrErr := json.Unmarshal(jsonBytes, &tracks); arrErr != nil {
 			return nil, fmt.Errorf("failed to parse search result: %w (also tried array: %v)", err, arrErr)
 		}
-		// Wrap array in ExtSearchResult
 		searchResult = ExtSearchResult{
 			Tracks: tracks,
 			Total:  len(tracks),
@@ -206,7 +184,6 @@ func (p *ExtensionProviderWrapper) SearchTracks(query string, limit int) (*ExtSe
 	return &searchResult, nil
 }
 
-// GetTrack gets track details by ID
 func (p *ExtensionProviderWrapper) GetTrack(trackID string) (*ExtTrackMetadata, error) {
 	if !p.extension.Manifest.IsMetadataProvider() {
 		return nil, fmt.Errorf("extension '%s' is not a metadata provider", p.extension.ID)
@@ -216,7 +193,6 @@ func (p *ExtensionProviderWrapper) GetTrack(trackID string) (*ExtTrackMetadata,
 		return nil, fmt.Errorf("extension '%s' is disabled", p.extension.ID)
 	}
 
-	// Lock VM to prevent concurrent access
 	p.extension.VMMu.Lock()
 	defer p.extension.VMMu.Unlock()
 
@@ -256,7 +232,6 @@ func (p *ExtensionProviderWrapper) GetTrack(trackID string) (*ExtTrackMetadata,
 	return &track, nil
 }
 
-// GetAlbum gets album details by ID
 func (p *ExtensionProviderWrapper) GetAlbum(albumID string) (*ExtAlbumMetadata, error) {
 	if !p.extension.Manifest.IsMetadataProvider() {
 		return nil, fmt.Errorf("extension '%s' is not a metadata provider", p.extension.ID)
@@ -266,7 +241,6 @@ func (p *ExtensionProviderWrapper) GetAlbum(albumID string) (*ExtAlbumMetadata,
 		return nil, fmt.Errorf("extension '%s' is disabled", p.extension.ID)
 	}
 
-	// Lock VM to prevent concurrent access
 	p.extension.VMMu.Lock()
 	defer p.extension.VMMu.Unlock()
 
@@ -309,7 +283,6 @@ func (p *ExtensionProviderWrapper) GetAlbum(albumID string) (*ExtAlbumMetadata,
 	return &album, nil
 }
 
-// GetArtist gets artist details by ID
 func (p *ExtensionProviderWrapper) GetArtist(artistID string) (*ExtArtistMetadata, error) {
 	if !p.extension.Manifest.IsMetadataProvider() {
 		return nil, fmt.Errorf("extension '%s' is not a metadata provider", p.extension.ID)
@@ -319,7 +292,6 @@ func (p *ExtensionProviderWrapper) GetArtist(artistID string) (*ExtArtistMetadat
 		return nil, fmt.Errorf("extension '%s' is disabled", p.extension.ID)
 	}
 
-	// Lock VM to prevent concurrent access
 	p.extension.VMMu.Lock()
 	defer p.extension.VMMu.Unlock()
 
@@ -359,27 +331,22 @@ func (p *ExtensionProviderWrapper) GetArtist(artistID string) (*ExtArtistMetadat
 	return &artist, nil
 }
 
-// EnrichTrack enriches track metadata before download (e.g., fetch real ISRC)
-// This is called lazily when download starts, not when playlist/album is loaded
-// Extension should implement enrichTrack(track) function that returns enriched track
 func (p *ExtensionProviderWrapper) EnrichTrack(track *ExtTrackMetadata) (*ExtTrackMetadata, error) {
 	if !p.extension.Manifest.IsMetadataProvider() {
-		return track, nil // Not a metadata provider, return as-is
+		return track, nil
 	}
 
 	if !p.extension.Enabled {
-		return track, nil // Extension disabled, return as-is
+		return track, nil
 	}
 
-	// Lock VM to prevent concurrent access
 	p.extension.VMMu.Lock()
 	defer p.extension.VMMu.Unlock()
 
-	// Convert track to JSON for passing to JS
 	trackJSON, err := json.Marshal(track)
 	if err != nil {
 		GoLog("[Extension] EnrichTrack: failed to marshal track: %v\n", err)
-		return track, nil // Return original on error
+		return track, nil
 	}
 
 	script := fmt.Sprintf(`
@@ -399,10 +366,9 @@ func (p *ExtensionProviderWrapper) EnrichTrack(track *ExtTrackMetadata) (*ExtTra
 		} else {
 			GoLog("[Extension] EnrichTrack error for %s: %v\n", p.extension.ID, err)
 		}
-		return track, nil // Return original on error
+		return track, nil
 	}
 
-	// If extension doesn't implement enrichTrack or returns null, return original
 	if result == nil || goja.IsUndefined(result) || goja.IsNull(result) {
 		return track, nil
 	}
@@ -420,18 +386,11 @@ func (p *ExtensionProviderWrapper) EnrichTrack(track *ExtTrackMetadata) (*ExtTra
 		return track, nil
 	}
 
-	// Preserve provider ID
 	enrichedTrack.ProviderID = track.ProviderID
 
-	GoLog("[Extension] EnrichTrack: enriched track from %s (ISRC: %s -> %s)\n",
-		p.extension.ID, track.ISRC, enrichedTrack.ISRC)
-
 	return &enrichedTrack, nil
 }
 
-// ==================== Download Provider Methods ====================
-
-// CheckAvailability checks if a track is available for download
 func (p *ExtensionProviderWrapper) CheckAvailability(isrc, trackName, artistName string) (*ExtAvailabilityResult, error) {
 	if !p.extension.Manifest.IsDownloadProvider() {
 		return nil, fmt.Errorf("extension '%s' is not a download provider", p.extension.ID)
@@ -441,7 +400,6 @@ func (p *ExtensionProviderWrapper) CheckAvailability(isrc, trackName, artistName
 		return nil, fmt.Errorf("extension '%s' is disabled", p.extension.ID)
 	}
 
-	// Lock VM to prevent concurrent access
 	p.extension.VMMu.Lock()
 	defer p.extension.VMMu.Unlock()
 
@@ -480,7 +438,6 @@ func (p *ExtensionProviderWrapper) CheckAvailability(isrc, trackName, artistName
 	return &availability, nil
 }
 
-// GetDownloadURL gets the download URL for a track
 func (p *ExtensionProviderWrapper) GetDownloadURL(trackID, quality string) (*ExtDownloadURLResult, error) {
 	if !p.extension.Manifest.IsDownloadProvider() {
 		return nil, fmt.Errorf("extension '%s' is not a download provider", p.extension.ID)
@@ -490,7 +447,6 @@ func (p *ExtensionProviderWrapper) GetDownloadURL(trackID, quality string) (*Ext
 		return nil, fmt.Errorf("extension '%s' is disabled", p.extension.ID)
 	}
 
-	// Lock VM to prevent concurrent access
 	p.extension.VMMu.Lock()
 	defer p.extension.VMMu.Unlock()
 
@@ -529,10 +485,8 @@ func (p *ExtensionProviderWrapper) GetDownloadURL(trackID, quality string) (*Ext
 	return &urlResult, nil
 }
 
-// ExtDownloadTimeout is longer for extension download operations (5 minutes)
 const ExtDownloadTimeout = 5 * time.Minute
 
-// Download downloads a track with progress reporting
 func (p *ExtensionProviderWrapper) Download(trackID, quality, outputPath string, onProgress func(percent int)) (*ExtDownloadResult, error) {
 	if !p.extension.Manifest.IsDownloadProvider() {
 		return nil, fmt.Errorf("extension '%s' is not a download provider", p.extension.ID)
@@ -542,15 +496,12 @@ func (p *ExtensionProviderWrapper) Download(trackID, quality, outputPath string,
 		return nil, fmt.Errorf("extension '%s' is disabled", p.extension.ID)
 	}
 
-	// Lock VM to prevent concurrent access
 	p.extension.VMMu.Lock()
 	defer p.extension.VMMu.Unlock()
 
-	// Set up progress callback in VM
 	p.vm.Set("__onProgress", func(call goja.FunctionCall) goja.Value {
 		if len(call.Arguments) > 0 {
 			percent := int(call.Arguments[0].ToInteger())
-			// Clamp to 0-100
 			if percent < 0 {
 				percent = 0
 			}
@@ -573,7 +524,6 @@ func (p *ExtensionProviderWrapper) Download(trackID, quality, outputPath string,
 		})()
 	`, trackID, quality, outputPath)
 
-	// Use longer timeout for downloads (5 minutes)
 	result, err := RunWithTimeoutAndRecover(p.vm, script, ExtDownloadTimeout)
 	if err != nil {
 		errMsg := err.Error()
@@ -619,9 +569,6 @@ func (p *ExtensionProviderWrapper) Download(trackID, quality, outputPath string,
 	return &downloadResult, nil
 }
 
-// ==================== Extension Manager Provider Methods ====================
-
-// GetMetadataProviders returns all enabled metadata provider extensions
 func (m *ExtensionManager) GetMetadataProviders() []*ExtensionProviderWrapper {
 	m.mu.RLock()
 	defer m.mu.RUnlock()
@@ -635,7 +582,6 @@ func (m *ExtensionManager) GetMetadataProviders() []*ExtensionProviderWrapper {
 	return providers
 }
 
-// GetDownloadProviders returns all enabled download provider extensions
 func (m *ExtensionManager) GetDownloadProviders() []*ExtensionProviderWrapper {
 	m.mu.RLock()
 	defer m.mu.RUnlock()
@@ -649,7 +595,6 @@ func (m *ExtensionManager) GetDownloadProviders() []*ExtensionProviderWrapper {
 	return providers
 }
 
-// SearchTracksWithExtensions searches all metadata providers
 func (m *ExtensionManager) SearchTracksWithExtensions(query string, limit int) ([]ExtTrackMetadata, error) {
 	providers := m.GetMetadataProviders()
 	if len(providers) == 0 {
@@ -671,18 +616,12 @@ func (m *ExtensionManager) SearchTracksWithExtensions(query string, limit int) (
 	return allTracks, nil
 }
 
-// ==================== Provider Priority ====================
-
-// providerPriority stores the order of download providers
 var providerPriority []string
 var providerPriorityMu sync.RWMutex
 
-// metadataProviderPriority stores the order of metadata providers
 var metadataProviderPriority []string
 var metadataProviderPriorityMu sync.RWMutex
 
-// SetProviderPriority sets the order of download providers
-// providerIDs should include both built-in ("tidal", "qobuz", "amazon") and extension IDs
 func SetProviderPriority(providerIDs []string) {
 	providerPriorityMu.Lock()
 	defer providerPriorityMu.Unlock()
@@ -690,13 +629,11 @@ func SetProviderPriority(providerIDs []string) {
 	GoLog("[Extension] Download provider priority set: %v\n", providerIDs)
 }
 
-// GetProviderPriority returns the current provider priority order
 func GetProviderPriority() []string {
 	providerPriorityMu.RLock()
 	defer providerPriorityMu.RUnlock()
 
 	if len(providerPriority) == 0 {
-		// Default order: built-in providers first
 		return []string{"tidal", "qobuz", "amazon"}
 	}
 
@@ -705,8 +642,6 @@ func GetProviderPriority() []string {
 	return result
 }
 
-// SetMetadataProviderPriority sets the order of metadata providers
-// providerIDs should include both built-in ("spotify", "deezer") and extension IDs
 func SetMetadataProviderPriority(providerIDs []string) {
 	metadataProviderPriorityMu.Lock()
 	defer metadataProviderPriorityMu.Unlock()
@@ -714,13 +649,11 @@ func SetMetadataProviderPriority(providerIDs []string) {
 	GoLog("[Extension] Metadata provider priority set: %v\n", providerIDs)
 }
 
-// GetMetadataProviderPriority returns the current metadata provider priority order
 func GetMetadataProviderPriority() []string {
 	metadataProviderPriorityMu.RLock()
 	defer metadataProviderPriorityMu.RUnlock()
 
 	if len(metadataProviderPriority) == 0 {
-		// Default order: built-in providers first
 		return []string{"deezer", "spotify"}
 	}
 
@@ -729,30 +662,34 @@ func GetMetadataProviderPriority() []string {
 	return result
 }
 
-// isBuiltInProvider checks if a provider ID is a built-in provider
 func isBuiltInProvider(providerID string) bool {
 	switch providerID {
-	case "tidal", "qobuz", "amazon":
+	case "tidal", "qobuz", "amazon", "deezer":
 		return true
 	default:
 		return false
 	}
 }
 
-// ==================== Download with Fallback ====================
-
-// DownloadWithExtensionFallback tries to download from providers in priority order
-// Includes both built-in providers and extension providers
-// If req.Source is set (extension ID), that extension is tried first
 func DownloadWithExtensionFallback(req DownloadRequest) (*DownloadResponse, error) {
 	priority := GetProviderPriority()
 	extManager := GetExtensionManager()
 
-	var lastErr error
-	var skipBuiltIn bool // If source extension has skipBuiltInFallback, don't try built-in providers
+	if req.Service != "" && isBuiltInProvider(req.Service) {
+		GoLog("[DownloadWithExtensionFallback] User selected service: %s, prioritizing it first\n", req.Service)
+		newPriority := []string{req.Service}
+		for _, p := range priority {
+			if p != req.Service {
+				newPriority = append(newPriority, p)
+			}
+		}
+		priority = newPriority
+		GoLog("[DownloadWithExtensionFallback] New priority order: %v\n", priority)
+	}
+
+	var lastErr error
+	var skipBuiltIn bool
 
-	// LAZY ENRICHMENT: If track came from an extension, try to enrich metadata (e.g., get real ISRC)
-	// This is done lazily at download time, not when playlist/album is loaded
 	if req.Source != "" && !isBuiltInProvider(req.Source) {
 		ext, err := extManager.GetExtension(req.Source)
 		if err == nil && ext.Enabled && ext.Error == "" && ext.Manifest.IsMetadataProvider() {
@@ -796,7 +733,6 @@ func DownloadWithExtensionFallback(req DownloadRequest) (*DownloadResponse, erro
 				if enrichedTrack.Artists != "" {
 					req.ArtistName = enrichedTrack.Artists
 				}
-				// Copy extended metadata from enrichment (label, copyright, genre, release_date)
 				if enrichedTrack.Label != "" && req.Label == "" {
 					GoLog("[DownloadWithExtensionFallback] Label from enrichment: %s\n", enrichedTrack.Label)
 					req.Label = enrichedTrack.Label
@@ -817,7 +753,6 @@ func DownloadWithExtensionFallback(req DownloadRequest) (*DownloadResponse, erro
 		}
 	}
 
-	// If source extension is specified, try it first before the priority list
 	if req.Source != "" && !isBuiltInProvider(req.Source) {
 		GoLog("[DownloadWithExtensionFallback] Track source is extension '%s', trying it first\n", req.Source)
 
@@ -827,15 +762,12 @@ func DownloadWithExtensionFallback(req DownloadRequest) (*DownloadResponse, erro
 
 			provider := NewExtensionProviderWrapper(ext)
 
-			// For tracks from extension search, use the track ID directly (e.g., "youtube:VIDEO_ID")
-			// The extension already knows how to handle this ID
-			trackID := req.SpotifyID // This contains the extension's track ID (e.g., "youtube:xxx")
+			trackID := req.SpotifyID
 
 			GoLog("[DownloadWithExtensionFallback] Downloading from source extension with trackID: %s (skipBuiltInFallback: %v)\n", trackID, skipBuiltIn)
 
 			outputPath := buildOutputPath(req)
 
-			// Download directly using the track ID from the extension
 			result, err := provider.Download(trackID, req.Quality, outputPath, func(percent int) {
 				if req.ItemID != "" {
 					SetItemProgress(req.ItemID, float64(percent), 0, 0)
@@ -855,7 +787,6 @@ func DownloadWithExtensionFallback(req DownloadRequest) (*DownloadResponse, erro
 					Copyright:        req.Copyright,
 				}
 
-				// Embed genre and label if provided (from Deezer metadata)
 				if req.Genre != "" || req.Label != "" {
 					if err := EmbedGenreLabel(result.FilePath, req.Genre, req.Label); err != nil {
 						GoLog("[DownloadWithExtensionFallback] Warning: failed to embed genre/label: %v\n", err)
@@ -864,7 +795,6 @@ func DownloadWithExtensionFallback(req DownloadRequest) (*DownloadResponse, erro
 					}
 				}
 
-				// If extension has skipMetadataEnrichment, copy metadata
 				if ext.Manifest.SkipMetadataEnrichment {
 					resp.SkipMetadataEnrichment = true
 					if result.Title != "" {
@@ -914,12 +844,11 @@ func DownloadWithExtensionFallback(req DownloadRequest) (*DownloadResponse, erro
 			}
 			GoLog("[DownloadWithExtensionFallback] Source extension %s failed: %v\n", req.Source, lastErr)
 
-			// If skipBuiltInFallback is true, don't continue to other providers
 			if skipBuiltIn {
 				GoLog("[DownloadWithExtensionFallback] skipBuiltInFallback is true, not trying other providers\n")
 				return &DownloadResponse{
 					Success:   false,
-					Error:     fmt.Sprintf("Download failed: %v", lastErr),
+					Error:     "Download failed: " + lastErr.Error(),
 					ErrorType: "extension_error",
 					Service:   req.Source,
 				}, nil
@@ -929,14 +858,11 @@ func DownloadWithExtensionFallback(req DownloadRequest) (*DownloadResponse, erro
 		}
 	}
 
-	// Continue with priority list
 	for _, providerID := range priority {
-		// Skip if we already tried this as source
 		if providerID == req.Source {
 			continue
 		}
 
-		// Skip built-in providers if skipBuiltIn is set
 		if skipBuiltIn && isBuiltInProvider(providerID) {
 			GoLog("[DownloadWithExtensionFallback] Skipping built-in provider %s (skipBuiltInFallback)\n", providerID)
 			continue
@@ -945,7 +871,6 @@ func DownloadWithExtensionFallback(req DownloadRequest) (*DownloadResponse, erro
 		GoLog("[DownloadWithExtensionFallback] Trying provider: %s\n", providerID)
 
 		if isBuiltInProvider(providerID) {
-			// For built-in providers, enrich with Deezer metadata if not already present
 			if (req.Genre == "" || req.Label == "") && req.ISRC != "" {
 				GoLog("[DownloadWithExtensionFallback] Enriching extended metadata from Deezer for ISRC: %s\n", req.ISRC)
 				ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
@@ -966,11 +891,9 @@ func DownloadWithExtensionFallback(req DownloadRequest) (*DownloadResponse, erro
 				}
 			}
 
-			// Use built-in provider
 			result, err := tryBuiltInProvider(providerID, req)
 			if err == nil && result.Success {
 				result.Service = providerID
-				// Copy enriched metadata to response for Flutter (needed for M4A->FLAC conversion)
 				if req.Label != "" {
 					result.Label = req.Label
 				}
@@ -998,7 +921,6 @@ func DownloadWithExtensionFallback(req DownloadRequest) (*DownloadResponse, erro
 				GoLog("[DownloadWithExtensionFallback] %s failed: %v\n", providerID, err)
 			}
 		} else {
-			// Try extension provider
 			ext, err := extManager.GetExtension(providerID)
 			if err != nil || !ext.Enabled || ext.Error != "" {
 				GoLog("[DownloadWithExtensionFallback] Extension %s not available\n", providerID)
@@ -1041,7 +963,6 @@ func DownloadWithExtensionFallback(req DownloadRequest) (*DownloadResponse, erro
 					Copyright:        req.Copyright,
 				}
 
-				// Embed genre and label if provided (from Deezer metadata)
 				if req.Genre != "" || req.Label != "" {
 					if err := EmbedGenreLabel(result.FilePath, req.Genre, req.Label); err != nil {
 						GoLog("[DownloadWithExtensionFallback] Warning: failed to embed genre/label: %v\n", err)
@@ -1050,10 +971,8 @@ func DownloadWithExtensionFallback(req DownloadRequest) (*DownloadResponse, erro
 					}
 				}
 
-				// If extension has skipMetadataEnrichment and returned metadata, use it
 				if ext.Manifest.SkipMetadataEnrichment {
 					resp.SkipMetadataEnrichment = true
-					// Copy metadata from extension result if provided
 					if result.Title != "" {
 						resp.Title = result.Title
 					}
@@ -1106,7 +1025,7 @@ func DownloadWithExtensionFallback(req DownloadRequest) (*DownloadResponse, erro
 	if lastErr != nil {
 		return &DownloadResponse{
 			Success:   false,
-			Error:     fmt.Sprintf("All providers failed. Last error: %v", lastErr),
+			Error:     "All providers failed. Last error: " + lastErr.Error(),
 			ErrorType: "not_found",
 		}, nil
 	}
@@ -1118,7 +1037,6 @@ func DownloadWithExtensionFallback(req DownloadRequest) (*DownloadResponse, erro
 	}, nil
 }
 
-// tryBuiltInProvider attempts download from a built-in provider
 func tryBuiltInProvider(providerID string, req DownloadRequest) (*DownloadResponse, error) {
 	req.Service = providerID
 
@@ -1204,7 +1122,6 @@ func tryBuiltInProvider(providerID string, req DownloadRequest) (*DownloadRespon
 	}, nil
 }
 
-// buildOutputPath builds the output file path from request
 func buildOutputPath(req DownloadRequest) string {
 	metadata := map[string]interface{}{
 		"title":        req.TrackName,
@@ -1224,9 +1141,6 @@ func buildOutputPath(req DownloadRequest) string {
 	return fmt.Sprintf("%s/%s.flac", req.OutputDir, filename)
 }
 
-// ==================== Custom Search ====================
-
-// CustomSearch performs a custom search using an extension's search function
 func (p *ExtensionProviderWrapper) CustomSearch(query string, options map[string]interface{}) ([]ExtTrackMetadata, error) {
 	if !p.extension.Manifest.HasCustomSearch() {
 		return nil, fmt.Errorf("extension '%s' does not support custom search", p.extension.ID)
@@ -1236,11 +1150,9 @@ func (p *ExtensionProviderWrapper) CustomSearch(query string, options map[string
 		return nil, fmt.Errorf("extension '%s' is disabled", p.extension.ID)
 	}
 
-	// Lock VM to prevent concurrent access
 	p.extension.VMMu.Lock()
 	defer p.extension.VMMu.Unlock()
 
-	// Convert options to JSON
 	optionsJSON, _ := json.Marshal(options)
 
 	script := fmt.Sprintf(`
@@ -1261,7 +1173,6 @@ func (p *ExtensionProviderWrapper) CustomSearch(query string, options map[string
 	}
 
 	if result == nil || goja.IsUndefined(result) || goja.IsNull(result) {
-		// Return empty array instead of error for no results
 		return []ExtTrackMetadata{}, nil
 	}
 
@@ -1276,7 +1187,6 @@ func (p *ExtensionProviderWrapper) CustomSearch(query string, options map[string
 		return nil, fmt.Errorf("failed to parse search result: %w", err)
 	}
 
-	// Return empty array if no tracks found
 	if tracks == nil {
 		tracks = []ExtTrackMetadata{}
 	}
@@ -1288,20 +1198,16 @@ func (p *ExtensionProviderWrapper) CustomSearch(query string, options map[string
 	return tracks, nil
 }
 
-// ==================== Custom URL Handler ====================
-
-// ExtURLHandleResult represents the result of URL handling
 type ExtURLHandleResult struct {
-	Type     string             `json:"type"`                // "track", "album", "playlist", "artist"
-	Track    *ExtTrackMetadata  `json:"track,omitempty"`     // For single track
-	Tracks   []ExtTrackMetadata `json:"tracks,omitempty"`    // For album/playlist
-	Album    *ExtAlbumMetadata  `json:"album,omitempty"`     // Album info
-	Artist   *ExtArtistMetadata `json:"artist,omitempty"`    // Artist info
-	Name     string             `json:"name,omitempty"`      // Playlist/album name
-	CoverURL string             `json:"cover_url,omitempty"` // Cover image
+	Type     string             `json:"type"`
+	Track    *ExtTrackMetadata  `json:"track,omitempty"`
+	Tracks   []ExtTrackMetadata `json:"tracks,omitempty"`
+	Album    *ExtAlbumMetadata  `json:"album,omitempty"`
+	Artist   *ExtArtistMetadata `json:"artist,omitempty"`
+	Name     string             `json:"name,omitempty"`
+	CoverURL string             `json:"cover_url,omitempty"`
 }
 
-// HandleURL processes a URL using the extension's URL handler
 func (p *ExtensionProviderWrapper) HandleURL(url string) (*ExtURLHandleResult, error) {
 	if !p.extension.Manifest.HasURLHandler() {
 		return nil, fmt.Errorf("extension '%s' does not support URL handling", p.extension.ID)
@@ -1311,7 +1217,6 @@ func (p *ExtensionProviderWrapper) HandleURL(url string) (*ExtURLHandleResult, e
 		return nil, fmt.Errorf("extension '%s' is disabled", p.extension.ID)
 	}
 
-	// Lock VM to prevent concurrent access
 	p.extension.VMMu.Lock()
 	defer p.extension.VMMu.Unlock()
 
@@ -1347,7 +1252,6 @@ func (p *ExtensionProviderWrapper) HandleURL(url string) (*ExtURLHandleResult, e
 		return nil, fmt.Errorf("failed to parse URL handle result: %w", err)
 	}
 
-	// Set provider ID on tracks
 	if handleResult.Track != nil {
 		handleResult.Track.ProviderID = p.extension.ID
 	}
@@ -1376,9 +1280,6 @@ func (p *ExtensionProviderWrapper) HandleURL(url string) (*ExtURLHandleResult, e
 	return &handleResult, nil
 }
 
-// ==================== Custom Track Matching ====================
-
-// MatchTrackResult represents the result of custom track matching
 type MatchTrackResult struct {
 	Matched    bool    `json:"matched"`
 	TrackID    string  `json:"track_id,omitempty"`
@@ -1386,7 +1287,6 @@ type MatchTrackResult struct {
 	Reason     string  `json:"reason,omitempty"`
 }
 
-// MatchTrack uses extension's custom matching algorithm
 func (p *ExtensionProviderWrapper) MatchTrack(sourceTrack map[string]interface{}, candidates []map[string]interface{}) (*MatchTrackResult, error) {
 	if !p.extension.Manifest.HasCustomMatching() {
 		return nil, fmt.Errorf("extension '%s' does not support custom matching", p.extension.ID)
@@ -1396,7 +1296,6 @@ func (p *ExtensionProviderWrapper) MatchTrack(sourceTrack map[string]interface{}
 		return nil, fmt.Errorf("extension '%s' is disabled", p.extension.ID)
 	}
 
-	// Lock VM to prevent concurrent access
 	p.extension.VMMu.Lock()
 	defer p.extension.VMMu.Unlock()
 
@@ -1438,22 +1337,16 @@ func (p *ExtensionProviderWrapper) MatchTrack(sourceTrack map[string]interface{}
 	return &matchResult, nil
 }
 
-// ==================== Post-Processing ====================
-
-// PostProcessResult represents the result of post-processing
 type PostProcessResult struct {
 	Success     bool   `json:"success"`
 	NewFilePath string `json:"new_file_path,omitempty"`
 	Error       string `json:"error,omitempty"`
-	// Additional metadata that may have changed
-	BitDepth   int `json:"bit_depth,omitempty"`
-	SampleRate int `json:"sample_rate,omitempty"`
+	BitDepth    int    `json:"bit_depth,omitempty"`
+	SampleRate  int    `json:"sample_rate,omitempty"`
 }
 
-// PostProcessTimeout is longer for post-processing (2 minutes)
 const PostProcessTimeout = 2 * time.Minute
 
-// PostProcess runs post-processing hooks on a downloaded file
 func (p *ExtensionProviderWrapper) PostProcess(filePath string, metadata map[string]interface{}, hookID string) (*PostProcessResult, error) {
 	if !p.extension.Manifest.HasPostProcessing() {
 		return nil, fmt.Errorf("extension '%s' does not support post-processing", p.extension.ID)
@@ -1463,7 +1356,6 @@ func (p *ExtensionProviderWrapper) PostProcess(filePath string, metadata map[str
 		return nil, fmt.Errorf("extension '%s' is disabled", p.extension.ID)
 	}
 
-	// Lock VM to prevent concurrent access
 	p.extension.VMMu.Lock()
 	defer p.extension.VMMu.Unlock()
 
@@ -1517,9 +1409,6 @@ func (p *ExtensionProviderWrapper) PostProcess(filePath string, metadata map[str
 	return &postResult, nil
 }
 
-// ==================== Extension Manager Advanced Methods ====================
-
-// GetSearchProviders returns all extensions that provide custom search
 func (m *ExtensionManager) GetSearchProviders() []*ExtensionProviderWrapper {
 	m.mu.RLock()
 	defer m.mu.RUnlock()
@@ -1533,7 +1422,6 @@ func (m *ExtensionManager) GetSearchProviders() []*ExtensionProviderWrapper {
 	return providers
 }
 
-// GetURLHandlers returns all extensions that handle custom URLs
 func (m *ExtensionManager) GetURLHandlers() []*ExtensionProviderWrapper {
 	m.mu.RLock()
 	defer m.mu.RUnlock()
@@ -1547,7 +1435,6 @@ func (m *ExtensionManager) GetURLHandlers() []*ExtensionProviderWrapper {
 	return providers
 }
 
-// FindURLHandler finds an extension that can handle the given URL
 func (m *ExtensionManager) FindURLHandler(url string) *ExtensionProviderWrapper {
 	m.mu.RLock()
 	defer m.mu.RUnlock()
@@ -1560,14 +1447,11 @@ func (m *ExtensionManager) FindURLHandler(url string) *ExtensionProviderWrapper
 	return nil
 }
 
-// ExtURLHandleResultWithExtID wraps ExtURLHandleResult with extension ID for gomobile compatibility
 type ExtURLHandleResultWithExtID struct {
 	Result      *ExtURLHandleResult
 	ExtensionID string
 }
 
-// HandleURLWithExtension tries to handle a URL with any matching extension
-// Returns result with extension ID, or error if no handler found
 func (m *ExtensionManager) HandleURLWithExtension(url string) (*ExtURLHandleResultWithExtID, error) {
 	handler := m.FindURLHandler(url)
 	if handler == nil {

go_backend/extension_runtime.go

@@ -1,8 +1,11 @@
 package gobackend
 
 import (
+	"fmt"
+	"net"
 	"net/http"
 	"net/url"
+	"strings"
 	"sync"
 	"time"
 
@@ -23,9 +26,8 @@ type ExtensionAuthState struct {
 	RefreshToken    string
 	ExpiresAt       time.Time
 	IsAuthenticated bool
-	// PKCE support
-	PKCEVerifier  string
-	PKCEChallenge string
+	PKCEVerifier    string
+	PKCEChallenge   string
 }
 
 type PendingAuthRequest struct {
@@ -39,7 +41,6 @@ var (
 	pendingAuthRequestsMu sync.RWMutex
 )
 
-// GetPendingAuthRequest returns pending auth request for an extension (called from Flutter)
 func GetPendingAuthRequest(extensionID string) *PendingAuthRequest {
 	pendingAuthRequestsMu.RLock()
 	defer pendingAuthRequestsMu.RUnlock()
@@ -105,8 +106,16 @@ func NewExtensionRuntime(ext *LoadedExtension) *ExtensionRuntime {
 		Timeout: 30 * time.Second,
 		Jar:     jar,
 		CheckRedirect: func(req *http.Request, via []*http.Request) error {
-			// Validate redirect target domain against allowed domains
+			if req.URL.Scheme != "https" {
+				GoLog("[Extension:%s] Redirect blocked: non-https scheme '%s'\n", ext.ID, req.URL.Scheme)
+				return fmt.Errorf("redirect blocked: only https is allowed")
+			}
+
 			domain := req.URL.Hostname()
+			if domain == "" {
+				GoLog("[Extension:%s] Redirect blocked: missing hostname\n", ext.ID)
+				return fmt.Errorf("redirect blocked: hostname is required")
+			}
 			if !ext.Manifest.IsDomainAllowed(domain) {
 				GoLog("[Extension:%s] Redirect blocked: domain '%s' not in allowed list\n", ext.ID, domain)
 				return &RedirectBlockedError{Domain: domain}
@@ -115,7 +124,6 @@ func NewExtensionRuntime(ext *LoadedExtension) *ExtensionRuntime {
 				GoLog("[Extension:%s] Redirect blocked: private IP '%s'\n", ext.ID, domain)
 				return &RedirectBlockedError{Domain: domain, IsPrivate: true}
 			}
-			// Default redirect limit (10)
 			if len(via) >= 10 {
 				return http.ErrUseLastResponse
 			}
@@ -141,35 +149,48 @@ func (e *RedirectBlockedError) Error() string {
 
 // isPrivateIP checks if a hostname resolves to a private/local IP address
 func isPrivateIP(host string) bool {
-	// Block common private network patterns
-	// This is a simple check - for production, consider DNS resolution
-	privatePatterns := []string{
-		"localhost",
-		"127.",
-		"10.",
-		"172.16.", "172.17.", "172.18.", "172.19.",
-		"172.20.", "172.21.", "172.22.", "172.23.",
-		"172.24.", "172.25.", "172.26.", "172.27.",
-		"172.28.", "172.29.", "172.30.", "172.31.",
-		"192.168.",
-		"169.254.",
-		"::1",
-		"fc00:",
-		"fe80:",
+	hostLower := strings.ToLower(strings.TrimSpace(host))
+	if hostLower == "" {
+		return false
 	}
 
-	hostLower := host
-	for _, pattern := range privatePatterns {
-		if hostLower == pattern || len(hostLower) > len(pattern) && hostLower[:len(pattern)] == pattern {
+	if hostLower == "localhost" || strings.HasSuffix(hostLower, ".local") {
+		return true
+	}
+
+	if ip := net.ParseIP(hostLower); ip != nil {
+		return isPrivateIPAddr(ip)
+	}
+
+	ips, err := net.LookupIP(hostLower)
+	if err != nil {
+		return false
+	}
+
+	for _, ip := range ips {
+		if isPrivateIPAddr(ip) {
 			return true
 		}
 	}
 
-	// Also block .local domains
-	if len(host) > 6 && host[len(host)-6:] == ".local" {
+	return false
+}
+
+func isPrivateIPAddr(ip net.IP) bool {
+	if ip == nil {
+		return false
+	}
+	if ip.IsLoopback() ||
+		ip.IsPrivate() ||
+		ip.IsLinkLocalUnicast() ||
+		ip.IsLinkLocalMulticast() ||
+		ip.IsMulticast() ||
+		ip.IsUnspecified() {
+		return true
+	}
+	if !ip.IsGlobalUnicast() {
 		return true
 	}
-
 	return false
 }
 
@@ -201,18 +222,16 @@ func (r *ExtensionRuntime) SetSettings(settings map[string]interface{}) {
 	r.settings = settings
 }
 
-// RegisterAPIs registers all sandboxed APIs to the Goja VM
 func (r *ExtensionRuntime) RegisterAPIs(vm *goja.Runtime) {
 	r.vm = vm
 
-	// HTTP client (sandboxed to allowed domains)
 	httpObj := vm.NewObject()
 	httpObj.Set("get", r.httpGet)
 	httpObj.Set("post", r.httpPost)
 	httpObj.Set("put", r.httpPut)
 	httpObj.Set("delete", r.httpDelete)
 	httpObj.Set("patch", r.httpPatch)
-	httpObj.Set("request", r.httpRequest) // Generic HTTP request (GET, POST, PUT, DELETE, etc.)
+	httpObj.Set("request", r.httpRequest)
 	httpObj.Set("clearCookies", r.httpClearCookies)
 	vm.Set("http", httpObj)
 
@@ -222,7 +241,6 @@ func (r *ExtensionRuntime) RegisterAPIs(vm *goja.Runtime) {
 	storageObj.Set("remove", r.storageRemove)
 	vm.Set("storage", storageObj)
 
-	// Secure Credentials API (encrypted storage for sensitive data)
 	credentialsObj := vm.NewObject()
 	credentialsObj.Set("store", r.credentialsStore)
 	credentialsObj.Set("get", r.credentialsGet)
@@ -237,14 +255,12 @@ func (r *ExtensionRuntime) RegisterAPIs(vm *goja.Runtime) {
 	authObj.Set("clearAuth", r.authClear)
 	authObj.Set("isAuthenticated", r.authIsAuthenticated)
 	authObj.Set("getTokens", r.authGetTokens)
-	// PKCE support
 	authObj.Set("generatePKCE", r.authGeneratePKCE)
 	authObj.Set("getPKCE", r.authGetPKCE)
 	authObj.Set("startOAuthWithPKCE", r.authStartOAuthWithPKCE)
 	authObj.Set("exchangeCodeWithPKCE", r.authExchangeCodeWithPKCE)
 	vm.Set("auth", authObj)
 
-	// File operations (sandboxed)
 	fileObj := vm.NewObject()
 	fileObj.Set("download", r.fileDownload)
 	fileObj.Set("exists", r.fileExists)
@@ -262,7 +278,6 @@ func (r *ExtensionRuntime) RegisterAPIs(vm *goja.Runtime) {
 	ffmpegObj.Set("convert", r.ffmpegConvert)
 	vm.Set("ffmpeg", ffmpegObj)
 
-	// Track matching API
 	matchingObj := vm.NewObject()
 	matchingObj.Set("compareStrings", r.matchingCompareStrings)
 	matchingObj.Set("compareDuration", r.matchingCompareDuration)
@@ -279,14 +294,12 @@ func (r *ExtensionRuntime) RegisterAPIs(vm *goja.Runtime) {
 	utilsObj.Set("hmacSHA1", r.hmacSHA1)
 	utilsObj.Set("parseJSON", r.parseJSON)
 	utilsObj.Set("stringifyJSON", r.stringifyJSON)
-	// Crypto utilities for developers
 	utilsObj.Set("encrypt", r.cryptoEncrypt)
 	utilsObj.Set("decrypt", r.cryptoDecrypt)
 	utilsObj.Set("generateKey", r.cryptoGenerateKey)
 	utilsObj.Set("randomUserAgent", r.randomUserAgent)
 	vm.Set("utils", utilsObj)
 
-	// Log object (already set in extension_manager.go, but we can enhance it)
 	logObj := vm.NewObject()
 	logObj.Set("debug", r.logDebug)
 	logObj.Set("info", r.logInfo)
@@ -298,10 +311,6 @@ func (r *ExtensionRuntime) RegisterAPIs(vm *goja.Runtime) {
 	gobackendObj.Set("sanitizeFilename", r.sanitizeFilenameWrapper)
 	vm.Set("gobackend", gobackendObj)
 
-	// ==================== Browser-like Polyfills ====================
-	// These make porting browser/Node.js libraries easier
-
-	// Global fetch() - Promise-style HTTP API (browser-compatible)
 	vm.Set("fetch", r.fetchPolyfill)
 
 	vm.Set("atob", r.atobPolyfill)

go_backend/extension_runtime_auth.go

@@ -70,13 +70,11 @@ func (r *ExtensionRuntime) authGetCode(call goja.FunctionCall) goja.Value {
 	return r.vm.ToValue(state.AuthCode)
 }
 
-// authSetCode sets auth code and tokens (can be called by extension after token exchange)
 func (r *ExtensionRuntime) authSetCode(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 1 {
 		return r.vm.ToValue(false)
 	}
 
-	// Can accept either just auth code or an object with tokens
 	arg := call.Arguments[0].Export()
 
 	extensionAuthStateMu.Lock()
@@ -123,7 +121,6 @@ func (r *ExtensionRuntime) authClear(call goja.FunctionCall) goja.Value {
 	return r.vm.ToValue(true)
 }
 
-// authIsAuthenticated checks if extension has valid auth
 func (r *ExtensionRuntime) authIsAuthenticated(call goja.FunctionCall) goja.Value {
 	extensionAuthStateMu.RLock()
 	defer extensionAuthStateMu.RUnlock()
@@ -196,7 +193,6 @@ func generatePKCEChallenge(verifier string) string {
 }
 
 func (r *ExtensionRuntime) authGeneratePKCE(call goja.FunctionCall) goja.Value {
-	// Default length is 64 characters
 	length := 64
 	if len(call.Arguments) > 0 && !goja.IsUndefined(call.Arguments[0]) {
 		if l, ok := call.Arguments[0].Export().(float64); ok && l >= 43 && l <= 128 {
@@ -249,9 +245,7 @@ func (r *ExtensionRuntime) authGetPKCE(call goja.FunctionCall) goja.Value {
 	})
 }
 
-// authStartOAuthWithPKCE is a high-level helper that generates PKCE and opens OAuth URL
 // config: { authUrl, clientId, redirectUri, scope, extraParams }
-// Returns: { success, authUrl, pkce: { verifier, challenge } }
 func (r *ExtensionRuntime) authStartOAuthWithPKCE(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 1 {
 		return r.vm.ToValue(map[string]interface{}{
@@ -269,7 +263,6 @@ func (r *ExtensionRuntime) authStartOAuthWithPKCE(call goja.FunctionCall) goja.V
 		})
 	}
 
-	// Required fields
 	authURL, _ := config["authUrl"].(string)
 	clientID, _ := config["clientId"].(string)
 	redirectURI, _ := config["redirectUri"].(string)
@@ -281,11 +274,9 @@ func (r *ExtensionRuntime) authStartOAuthWithPKCE(call goja.FunctionCall) goja.V
 		})
 	}
 
-	// Optional fields
 	scope, _ := config["scope"].(string)
 	extraParams, _ := config["extraParams"].(map[string]interface{})
 
-	// Generate PKCE
 	verifier, err := generatePKCEVerifier(64)
 	if err != nil {
 		return r.vm.ToValue(map[string]interface{}{
@@ -295,7 +286,6 @@ func (r *ExtensionRuntime) authStartOAuthWithPKCE(call goja.FunctionCall) goja.V
 	}
 	challenge := generatePKCEChallenge(verifier)
 
-	// Store PKCE in auth state
 	extensionAuthStateMu.Lock()
 	state, exists := extensionAuthState[r.extensionID]
 	if !exists {
@@ -304,10 +294,9 @@ func (r *ExtensionRuntime) authStartOAuthWithPKCE(call goja.FunctionCall) goja.V
 	}
 	state.PKCEVerifier = verifier
 	state.PKCEChallenge = challenge
-	state.AuthCode = "" // Clear any previous auth code
+	state.AuthCode = ""
 	extensionAuthStateMu.Unlock()
 
-	// Build OAuth URL with PKCE parameters
 	parsedURL, err := url.Parse(authURL)
 	if err != nil {
 		return r.vm.ToValue(map[string]interface{}{
@@ -327,7 +316,6 @@ func (r *ExtensionRuntime) authStartOAuthWithPKCE(call goja.FunctionCall) goja.V
 		query.Set("scope", scope)
 	}
 
-	// Add extra params
 	for k, v := range extraParams {
 		query.Set(k, fmt.Sprintf("%v", v))
 	}
@@ -335,7 +323,6 @@ func (r *ExtensionRuntime) authStartOAuthWithPKCE(call goja.FunctionCall) goja.V
 	parsedURL.RawQuery = query.Encode()
 	fullAuthURL := parsedURL.String()
 
-	// Store pending auth request for Flutter
 	pendingAuthRequestsMu.Lock()
 	pendingAuthRequests[r.extensionID] = &PendingAuthRequest{
 		ExtensionID: r.extensionID,

go_backend/extension_runtime_ffmpeg.go

@@ -64,7 +64,6 @@ func (r *ExtensionRuntime) ffmpegExecute(call goja.FunctionCall) goja.Value {
 
 	command := call.Arguments[0].String()
 
-	// Generate unique command ID
 	ffmpegCommandsMu.Lock()
 	ffmpegCommandID++
 	cmdID := fmt.Sprintf("%s_%d", r.extensionID, ffmpegCommandID)
@@ -77,7 +76,6 @@ func (r *ExtensionRuntime) ffmpegExecute(call goja.FunctionCall) goja.Value {
 
 	GoLog("[Extension:%s] FFmpeg command queued: %s\n", r.extensionID, cmdID)
 
-	// Wait for completion (with timeout)
 	timeout := 5 * time.Minute
 	start := time.Now()
 	for {
@@ -97,7 +95,6 @@ func (r *ExtensionRuntime) ffmpegExecute(call goja.FunctionCall) goja.Value {
 			}
 			ffmpegCommandsMu.RUnlock()
 
-			// Cleanup
 			ClearFFmpegCommand(cmdID)
 			return r.vm.ToValue(result)
 		}
@@ -124,7 +121,6 @@ func (r *ExtensionRuntime) ffmpegGetInfo(call goja.FunctionCall) goja.Value {
 
 	filePath := call.Arguments[0].String()
 
-	// Use Go's built-in audio quality function
 	quality, err := GetAudioQuality(filePath)
 	if err != nil {
 		return r.vm.ToValue(map[string]interface{}{
@@ -153,7 +149,6 @@ func (r *ExtensionRuntime) ffmpegConvert(call goja.FunctionCall) goja.Value {
 	inputPath := call.Arguments[0].String()
 	outputPath := call.Arguments[1].String()
 
-	// Get options if provided
 	options := map[string]interface{}{}
 	if len(call.Arguments) > 2 && !goja.IsUndefined(call.Arguments[2]) && !goja.IsNull(call.Arguments[2]) {
 		if opts, ok := call.Arguments[2].Export().(map[string]interface{}); ok {
@@ -161,36 +156,29 @@ func (r *ExtensionRuntime) ffmpegConvert(call goja.FunctionCall) goja.Value {
 		}
 	}
 
-	// Build FFmpeg command
 	var cmdParts []string
 	cmdParts = append(cmdParts, "-i", fmt.Sprintf("%q", inputPath))
 
-	// Audio codec
 	if codec, ok := options["codec"].(string); ok {
 		cmdParts = append(cmdParts, "-c:a", codec)
 	}
 
-	// Bitrate
 	if bitrate, ok := options["bitrate"].(string); ok {
 		cmdParts = append(cmdParts, "-b:a", bitrate)
 	}
 
-	// Sample rate
 	if sampleRate, ok := options["sample_rate"].(float64); ok {
 		cmdParts = append(cmdParts, "-ar", fmt.Sprintf("%d", int(sampleRate)))
 	}
 
-	// Channels
 	if channels, ok := options["channels"].(float64); ok {
 		cmdParts = append(cmdParts, "-ac", fmt.Sprintf("%d", int(channels)))
 	}
 
-	// Overwrite output
 	cmdParts = append(cmdParts, "-y", fmt.Sprintf("%q", outputPath))
 
 	command := strings.Join(cmdParts, " ")
 
-	// Execute via ffmpegExecute
 	execCall := goja.FunctionCall{
 		Arguments: []goja.Value{r.vm.ToValue(command)},
 	}

go_backend/extension_runtime_file.go

@@ -15,7 +15,6 @@ import (
 
 // ==================== File API (Sandboxed) ====================
 
-// List of allowed directories for file operations (set by Go backend for download operations)
 var (
 	allowedDownloadDirs   []string
 	allowedDownloadDirsMu sync.RWMutex
@@ -42,18 +41,40 @@ func isPathInAllowedDirs(absPath string) bool {
 	defer allowedDownloadDirsMu.RUnlock()
 
 	for _, allowedDir := range allowedDownloadDirs {
-		if strings.HasPrefix(absPath, allowedDir) {
+		if isPathWithinBase(allowedDir, absPath) {
 			return true
 		}
 	}
 	return false
 }
 
-// validatePath checks if the path is within the extension's sandbox
-// Security: Absolute paths are BLOCKED unless they're in allowed download directories
-// Extensions should use relative paths for their own data storage
+func isPathWithinBase(baseDir, targetPath string) bool {
+	baseAbs, err := filepath.Abs(baseDir)
+	if err != nil {
+		return false
+	}
+	targetAbs, err := filepath.Abs(targetPath)
+	if err != nil {
+		return false
+	}
+
+	rel, err := filepath.Rel(baseAbs, targetAbs)
+	if err != nil {
+		return false
+	}
+	rel = filepath.Clean(rel)
+	if rel == "." {
+		return true
+	}
+
+	prefix := ".." + string(filepath.Separator)
+	if rel == ".." || strings.HasPrefix(rel, prefix) {
+		return false
+	}
+	return true
+}
+
 func (r *ExtensionRuntime) validatePath(path string) (string, error) {
-	// Check if extension has file permission
 	if !r.manifest.Permissions.File {
 		return "", fmt.Errorf("file access denied: extension does not have 'file' permission")
 	}
@@ -81,7 +102,7 @@ func (r *ExtensionRuntime) validatePath(path string) (string, error) {
 	}
 
 	absDataDir, _ := filepath.Abs(r.dataDir)
-	if !strings.HasPrefix(absPath, absDataDir) {
+	if !isPathWithinBase(absDataDir, absPath) {
 		return "", fmt.Errorf("file access denied: path '%s' is outside sandbox", path)
 	}
 
@@ -327,7 +348,6 @@ func (r *ExtensionRuntime) fileWrite(call goja.FunctionCall) goja.Value {
 		})
 	}
 
-	// Create directory if needed
 	dir := filepath.Dir(fullPath)
 	if err := os.MkdirAll(dir, 0755); err != nil {
 		return r.vm.ToValue(map[string]interface{}{

go_backend/extension_runtime_http.go

@@ -14,23 +14,30 @@ import (
 
 // ==================== HTTP API (Sandboxed) ====================
 
-// HTTPResponse represents the response from an HTTP request
 type HTTPResponse struct {
 	StatusCode int               `json:"statusCode"`
 	Body       string            `json:"body"`
 	Headers    map[string]string `json:"headers"`
 }
 
-// validateDomain checks if the domain is allowed by the extension's permissions
 func (r *ExtensionRuntime) validateDomain(urlStr string) error {
 	parsed, err := url.Parse(urlStr)
 	if err != nil {
 		return fmt.Errorf("invalid URL: %w", err)
 	}
 
-	domain := parsed.Hostname()
+	if parsed.Scheme == "" {
+		return fmt.Errorf("invalid URL: scheme is required")
+	}
+	if parsed.Scheme != "https" {
+		return fmt.Errorf("network access denied: only https is allowed")
+	}
+
+	domain := parsed.Hostname()
+	if domain == "" {
+		return fmt.Errorf("invalid URL: hostname is required")
+	}
 
-	// Block private/local network access (SSRF protection)
 	if isPrivateIP(domain) {
 		return fmt.Errorf("network access denied: private/local network '%s' not allowed", domain)
 	}
@@ -42,7 +49,6 @@ func (r *ExtensionRuntime) validateDomain(urlStr string) error {
 	return nil
 }
 
-// httpGet performs a GET request (sandboxed)
 func (r *ExtensionRuntime) httpGet(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 1 {
 		return r.vm.ToValue(map[string]interface{}{
@@ -76,16 +82,14 @@ func (r *ExtensionRuntime) httpGet(call goja.FunctionCall) goja.Value {
 		})
 	}
 
-	// Set headers - user headers first
 	for k, v := range headers {
 		req.Header.Set(k, v)
 	}
-	// Only set default User-Agent if not provided by extension
+
 	if req.Header.Get("User-Agent") == "" {
 		req.Header.Set("User-Agent", "Spotiflac-Extension/1.0")
 	}
 
-	// Execute request
 	resp, err := r.httpClient.Do(req)
 	if err != nil {
 		return r.vm.ToValue(map[string]interface{}{
@@ -101,26 +105,24 @@ func (r *ExtensionRuntime) httpGet(call goja.FunctionCall) goja.Value {
 		})
 	}
 
-	// Extract response headers - return all values as arrays for multi-value headers (cookies, etc.)
 	respHeaders := make(map[string]interface{})
 	for k, v := range resp.Header {
 		if len(v) == 1 {
 			respHeaders[k] = v[0]
 		} else {
-			respHeaders[k] = v // Return as array if multiple values
+			respHeaders[k] = v
 		}
 	}
 
 	return r.vm.ToValue(map[string]interface{}{
 		"statusCode": resp.StatusCode,
-		"status":     resp.StatusCode, // Alias for convenience
+		"status":     resp.StatusCode,
 		"ok":         resp.StatusCode >= 200 && resp.StatusCode < 300,
 		"body":       string(body),
 		"headers":    respHeaders,
 	})
 }
 
-// httpPost performs a POST request (sandboxed)
 func (r *ExtensionRuntime) httpPost(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 1 {
 		return r.vm.ToValue(map[string]interface{}{
@@ -137,7 +139,6 @@ func (r *ExtensionRuntime) httpPost(call goja.FunctionCall) goja.Value {
 		})
 	}
 
-	// Get body if provided - support both string and object
 	var bodyStr string
 	if len(call.Arguments) > 1 && !goja.IsUndefined(call.Arguments[1]) && !goja.IsNull(call.Arguments[1]) {
 		bodyArg := call.Arguments[1].Export()
@@ -145,7 +146,6 @@ func (r *ExtensionRuntime) httpPost(call goja.FunctionCall) goja.Value {
 		case string:
 			bodyStr = v
 		case map[string]interface{}, []interface{}:
-			// Auto-stringify objects and arrays to JSON
 			jsonBytes, err := json.Marshal(v)
 			if err != nil {
 				return r.vm.ToValue(map[string]interface{}{
@@ -154,12 +154,10 @@ func (r *ExtensionRuntime) httpPost(call goja.FunctionCall) goja.Value {
 			}
 			bodyStr = string(jsonBytes)
 		default:
-			// Fallback to string conversion
 			bodyStr = call.Arguments[1].String()
 		}
 	}
 
-	// Get headers if provided
 	headers := make(map[string]string)
 	if len(call.Arguments) > 2 && !goja.IsUndefined(call.Arguments[2]) && !goja.IsNull(call.Arguments[2]) {
 		headersObj := call.Arguments[2].Export()
@@ -177,11 +175,10 @@ func (r *ExtensionRuntime) httpPost(call goja.FunctionCall) goja.Value {
 		})
 	}
 
-	// Set headers - user headers first
 	for k, v := range headers {
 		req.Header.Set(k, v)
 	}
-	// Only set defaults if not provided by extension
+
 	if req.Header.Get("User-Agent") == "" {
 		req.Header.Set("User-Agent", "Spotiflac-Extension/1.0")
 	}
@@ -189,7 +186,6 @@ func (r *ExtensionRuntime) httpPost(call goja.FunctionCall) goja.Value {
 		req.Header.Set("Content-Type", "application/json")
 	}
 
-	// Execute request
 	resp, err := r.httpClient.Do(req)
 	if err != nil {
 		return r.vm.ToValue(map[string]interface{}{
@@ -205,19 +201,18 @@ func (r *ExtensionRuntime) httpPost(call goja.FunctionCall) goja.Value {
 		})
 	}
 
-	// Extract response headers - return all values as arrays for multi-value headers
 	respHeaders := make(map[string]interface{})
 	for k, v := range resp.Header {
 		if len(v) == 1 {
 			respHeaders[k] = v[0]
 		} else {
-			respHeaders[k] = v // Return as array if multiple values
+			respHeaders[k] = v
 		}
 	}
 
 	return r.vm.ToValue(map[string]interface{}{
 		"statusCode": resp.StatusCode,
-		"status":     resp.StatusCode, // Alias for convenience
+		"status":     resp.StatusCode,
 		"ok":         resp.StatusCode >= 200 && resp.StatusCode < 300,
 		"body":       string(body),
 		"headers":    respHeaders,
@@ -240,27 +235,22 @@ func (r *ExtensionRuntime) httpRequest(call goja.FunctionCall) goja.Value {
 		})
 	}
 
-	// Default options
 	method := "GET"
 	var bodyStr string
 	headers := make(map[string]string)
 
-	// Parse options if provided
 	if len(call.Arguments) > 1 && !goja.IsUndefined(call.Arguments[1]) && !goja.IsNull(call.Arguments[1]) {
 		optionsObj := call.Arguments[1].Export()
 		if opts, ok := optionsObj.(map[string]interface{}); ok {
-			// Get method
 			if m, ok := opts["method"].(string); ok {
 				method = strings.ToUpper(m)
 			}
 
-			// Get body - support both string and object
 			if bodyArg, ok := opts["body"]; ok && bodyArg != nil {
 				switch v := bodyArg.(type) {
 				case string:
 					bodyStr = v
 				case map[string]interface{}, []interface{}:
-					// Auto-stringify objects and arrays to JSON
 					jsonBytes, err := json.Marshal(v)
 					if err != nil {
 						return r.vm.ToValue(map[string]interface{}{
@@ -273,7 +263,6 @@ func (r *ExtensionRuntime) httpRequest(call goja.FunctionCall) goja.Value {
 				}
 			}
 
-			// Get headers
 			if h, ok := opts["headers"].(map[string]interface{}); ok {
 				for k, v := range h {
 					headers[k] = fmt.Sprintf("%v", v)
@@ -282,7 +271,6 @@ func (r *ExtensionRuntime) httpRequest(call goja.FunctionCall) goja.Value {
 		}
 	}
 
-	// Create request
 	var reqBody io.Reader
 	if bodyStr != "" {
 		reqBody = strings.NewReader(bodyStr)
@@ -295,11 +283,10 @@ func (r *ExtensionRuntime) httpRequest(call goja.FunctionCall) goja.Value {
 		})
 	}
 
-	// Set headers - user headers first
 	for k, v := range headers {
 		req.Header.Set(k, v)
 	}
-	// Only set defaults if not provided by extension
+
 	if req.Header.Get("User-Agent") == "" {
 		req.Header.Set("User-Agent", "Spotiflac-Extension/1.0")
 	}
@@ -307,7 +294,6 @@ func (r *ExtensionRuntime) httpRequest(call goja.FunctionCall) goja.Value {
 		req.Header.Set("Content-Type", "application/json")
 	}
 
-	// Execute request
 	resp, err := r.httpClient.Do(req)
 	if err != nil {
 		return r.vm.ToValue(map[string]interface{}{
@@ -323,20 +309,18 @@ func (r *ExtensionRuntime) httpRequest(call goja.FunctionCall) goja.Value {
 		})
 	}
 
-	// Extract response headers - return all values as arrays for multi-value headers
 	respHeaders := make(map[string]interface{})
 	for k, v := range resp.Header {
 		if len(v) == 1 {
 			respHeaders[k] = v[0]
 		} else {
-			respHeaders[k] = v // Return as array if multiple values
+			respHeaders[k] = v
 		}
 	}
 
-	// Return response with helper properties
 	return r.vm.ToValue(map[string]interface{}{
 		"statusCode": resp.StatusCode,
-		"status":     resp.StatusCode, // Alias for convenience
+		"status":     resp.StatusCode,
 		"ok":         resp.StatusCode >= 200 && resp.StatusCode < 300,
 		"body":       string(body),
 		"headers":    respHeaders,
@@ -347,7 +331,6 @@ func (r *ExtensionRuntime) httpPut(call goja.FunctionCall) goja.Value {
 	return r.httpMethodShortcut("PUT", call)
 }
 
-// httpDelete performs a DELETE request (shortcut for http.request with method: "DELETE")
 func (r *ExtensionRuntime) httpDelete(call goja.FunctionCall) goja.Value {
 	return r.httpMethodShortcut("DELETE", call)
 }
@@ -356,8 +339,6 @@ func (r *ExtensionRuntime) httpPatch(call goja.FunctionCall) goja.Value {
 	return r.httpMethodShortcut("PATCH", call)
 }
 
-// httpMethodShortcut is a helper for PUT/DELETE/PATCH shortcuts
-// Signature: http.put(url, body, headers) / http.delete(url, headers) / http.patch(url, body, headers)
 func (r *ExtensionRuntime) httpMethodShortcut(method string, call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 1 {
 		return r.vm.ToValue(map[string]interface{}{
@@ -377,9 +358,7 @@ func (r *ExtensionRuntime) httpMethodShortcut(method string, call goja.FunctionC
 	var bodyStr string
 	headers := make(map[string]string)
 
-	// For DELETE, second arg is headers; for PUT/PATCH, second arg is body
 	if method == "DELETE" {
-		// http.delete(url, headers)
 		if len(call.Arguments) > 1 && !goja.IsUndefined(call.Arguments[1]) && !goja.IsNull(call.Arguments[1]) {
 			headersObj := call.Arguments[1].Export()
 			if h, ok := headersObj.(map[string]interface{}); ok {
@@ -389,7 +368,6 @@ func (r *ExtensionRuntime) httpMethodShortcut(method string, call goja.FunctionC
 			}
 		}
 	} else {
-		// http.put(url, body, headers) / http.patch(url, body, headers)
 		if len(call.Arguments) > 1 && !goja.IsUndefined(call.Arguments[1]) && !goja.IsNull(call.Arguments[1]) {
 			bodyArg := call.Arguments[1].Export()
 			switch v := bodyArg.(type) {
@@ -418,7 +396,6 @@ func (r *ExtensionRuntime) httpMethodShortcut(method string, call goja.FunctionC
 		}
 	}
 
-	// Create request
 	var reqBody io.Reader
 	if bodyStr != "" {
 		reqBody = strings.NewReader(bodyStr)
@@ -431,7 +408,6 @@ func (r *ExtensionRuntime) httpMethodShortcut(method string, call goja.FunctionC
 		})
 	}
 
-	// Set headers - user headers first
 	for k, v := range headers {
 		req.Header.Set(k, v)
 	}
@@ -442,7 +418,6 @@ func (r *ExtensionRuntime) httpMethodShortcut(method string, call goja.FunctionC
 		req.Header.Set("Content-Type", "application/json")
 	}
 
-	// Execute request
 	resp, err := r.httpClient.Do(req)
 	if err != nil {
 		return r.vm.ToValue(map[string]interface{}{
@@ -458,7 +433,6 @@ func (r *ExtensionRuntime) httpMethodShortcut(method string, call goja.FunctionC
 		})
 	}
 
-	// Extract response headers
 	respHeaders := make(map[string]interface{})
 	for k, v := range resp.Header {
 		if len(v) == 1 {

go_backend/extension_runtime_matching.go

@@ -9,7 +9,6 @@ import (
 
 // ==================== Track Matching API ====================
 
-// matchingCompareStrings compares two strings with fuzzy matching
 func (r *ExtensionRuntime) matchingCompareStrings(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 2 {
 		return r.vm.ToValue(0.0)
@@ -22,12 +21,10 @@ func (r *ExtensionRuntime) matchingCompareStrings(call goja.FunctionCall) goja.V
 		return r.vm.ToValue(1.0)
 	}
 
-	// Calculate Levenshtein distance-based similarity
 	similarity := calculateStringSimilarity(str1, str2)
 	return r.vm.ToValue(similarity)
 }
 
-// matchingCompareDuration compares two durations with tolerance
 func (r *ExtensionRuntime) matchingCompareDuration(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 2 {
 		return r.vm.ToValue(false)
@@ -36,8 +33,7 @@ func (r *ExtensionRuntime) matchingCompareDuration(call goja.FunctionCall) goja.
 	dur1 := int(call.Arguments[0].ToInteger())
 	dur2 := int(call.Arguments[1].ToInteger())
 
-	// Default tolerance: 3 seconds
-	tolerance := 3000 // milliseconds
+	tolerance := 3000
 	if len(call.Arguments) > 2 && !goja.IsUndefined(call.Arguments[2]) {
 		tolerance = int(call.Arguments[2].ToInteger())
 	}
@@ -50,7 +46,6 @@ func (r *ExtensionRuntime) matchingCompareDuration(call goja.FunctionCall) goja.
 	return r.vm.ToValue(diff <= tolerance)
 }
 
-// matchingNormalizeString normalizes a string for comparison
 func (r *ExtensionRuntime) matchingNormalizeString(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 1 {
 		return r.vm.ToValue("")
@@ -61,7 +56,6 @@ func (r *ExtensionRuntime) matchingNormalizeString(call goja.FunctionCall) goja.
 	return r.vm.ToValue(normalized)
 }
 
-// calculateStringSimilarity calculates similarity between two strings (0-1)
 func calculateStringSimilarity(s1, s2 string) float64 {
 	if len(s1) == 0 && len(s2) == 0 {
 		return 1.0
@@ -70,7 +64,6 @@ func calculateStringSimilarity(s1, s2 string) float64 {
 		return 0.0
 	}
 
-	// Use Levenshtein distance
 	distance := levenshteinDistance(s1, s2)
 	maxLen := len(s1)
 	if len(s2) > maxLen {
@@ -80,7 +73,6 @@ func calculateStringSimilarity(s1, s2 string) float64 {
 	return 1.0 - float64(distance)/float64(maxLen)
 }
 
-// levenshteinDistance calculates the Levenshtein distance between two strings
 func levenshteinDistance(s1, s2 string) int {
 	if len(s1) == 0 {
 		return len(s2)
@@ -89,7 +81,6 @@ func levenshteinDistance(s1, s2 string) int {
 		return len(s1)
 	}
 
-	// Create matrix
 	matrix := make([][]int, len(s1)+1)
 	for i := range matrix {
 		matrix[i] = make([]int, len(s2)+1)
@@ -99,7 +90,6 @@ func levenshteinDistance(s1, s2 string) int {
 		matrix[0][j] = j
 	}
 
-	// Fill matrix
 	for i := 1; i <= len(s1); i++ {
 		for j := 1; j <= len(s2); j++ {
 			cost := 1
@@ -107,9 +97,9 @@ func levenshteinDistance(s1, s2 string) int {
 				cost = 0
 			}
 			matrix[i][j] = min(
-				matrix[i-1][j]+1,      // deletion
-				matrix[i][j-1]+1,      // insertion
-				matrix[i-1][j-1]+cost, // substitution
+				matrix[i-1][j]+1,
+				matrix[i][j-1]+1,
+				matrix[i-1][j-1]+cost,
 			)
 		}
 	}
@@ -117,12 +107,9 @@ func levenshteinDistance(s1, s2 string) int {
 	return matrix[len(s1)][len(s2)]
 }
 
-// normalizeStringForMatching normalizes a string for comparison
 func normalizeStringForMatching(s string) string {
-	// Convert to lowercase
 	s = strings.ToLower(s)
 
-	// Remove common suffixes/prefixes
 	suffixes := []string{
 		" (remastered)", " (remaster)", " - remastered", " - remaster",
 		" (deluxe)", " (deluxe edition)", " - deluxe", " - deluxe edition",
@@ -136,7 +123,6 @@ func normalizeStringForMatching(s string) string {
 		}
 	}
 
-	// Remove special characters
 	var result strings.Builder
 	for _, r := range s {
 		if (r >= 'a' && r <= 'z') || (r >= '0' && r <= '9') || r == ' ' {
@@ -144,7 +130,6 @@ func normalizeStringForMatching(s string) string {
 		}
 	}
 
-	// Collapse multiple spaces
 	s = strings.Join(strings.Fields(result.String()), " ")
 
 	return strings.TrimSpace(s)

go_backend/extension_runtime_polyfills.go

@@ -25,14 +25,11 @@ func (r *ExtensionRuntime) fetchPolyfill(call goja.FunctionCall) goja.Value {
 	}
 
 	urlStr := call.Arguments[0].String()
-
-	// Validate domain
 	if err := r.validateDomain(urlStr); err != nil {
 		GoLog("[Extension:%s] fetch blocked: %v\n", r.extensionID, err)
 		return r.createFetchError(err.Error())
 	}
 
-	// Parse options
 	method := "GET"
 	var bodyStr string
 	headers := make(map[string]string)
@@ -40,7 +37,6 @@ func (r *ExtensionRuntime) fetchPolyfill(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) > 1 && !goja.IsUndefined(call.Arguments[1]) && !goja.IsNull(call.Arguments[1]) {
 		optionsObj := call.Arguments[1].Export()
 		if opts, ok := optionsObj.(map[string]interface{}); ok {
-			// Method
 			if m, ok := opts["method"].(string); ok {
 				method = strings.ToUpper(m)
 			}
@@ -61,7 +57,6 @@ func (r *ExtensionRuntime) fetchPolyfill(call goja.FunctionCall) goja.Value {
 				}
 			}
 
-			// Headers
 			if h, ok := opts["headers"]; ok && h != nil {
 				switch hv := h.(type) {
 				case map[string]interface{}:
@@ -73,7 +68,6 @@ func (r *ExtensionRuntime) fetchPolyfill(call goja.FunctionCall) goja.Value {
 		}
 	}
 
-	// Create HTTP request
 	var reqBody io.Reader
 	if bodyStr != "" {
 		reqBody = strings.NewReader(bodyStr)
@@ -84,11 +78,9 @@ func (r *ExtensionRuntime) fetchPolyfill(call goja.FunctionCall) goja.Value {
 		return r.createFetchError(err.Error())
 	}
 
-	// Set headers - user headers first
 	for k, v := range headers {
 		req.Header.Set(k, v)
 	}
-	// Set defaults if not provided
 	if req.Header.Get("User-Agent") == "" {
 		req.Header.Set("User-Agent", "SpotiFLAC-Extension/1.0")
 	}
@@ -96,20 +88,17 @@ func (r *ExtensionRuntime) fetchPolyfill(call goja.FunctionCall) goja.Value {
 		req.Header.Set("Content-Type", "application/json")
 	}
 
-	// Execute request
 	resp, err := r.httpClient.Do(req)
 	if err != nil {
 		return r.createFetchError(err.Error())
 	}
 	defer resp.Body.Close()
 
-	// Read body
 	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return r.createFetchError(err.Error())
 	}
 
-	// Extract response headers
 	respHeaders := make(map[string]interface{})
 	for k, v := range resp.Header {
 		if len(v) == 1 {
@@ -119,7 +108,6 @@ func (r *ExtensionRuntime) fetchPolyfill(call goja.FunctionCall) goja.Value {
 		}
 	}
 
-	// Create Response object (browser-compatible)
 	responseObj := r.vm.NewObject()
 	responseObj.Set("ok", resp.StatusCode >= 200 && resp.StatusCode < 300)
 	responseObj.Set("status", resp.StatusCode)
@@ -127,15 +115,12 @@ func (r *ExtensionRuntime) fetchPolyfill(call goja.FunctionCall) goja.Value {
 	responseObj.Set("headers", respHeaders)
 	responseObj.Set("url", urlStr)
 
-	// Store body for methods
 	bodyString := string(body)
 
-	// text() method - returns body as string
 	responseObj.Set("text", func(call goja.FunctionCall) goja.Value {
 		return r.vm.ToValue(bodyString)
 	})
 
-	// json() method - parses body as JSON
 	responseObj.Set("json", func(call goja.FunctionCall) goja.Value {
 		var result interface{}
 		if err := json.Unmarshal(body, &result); err != nil {
@@ -145,9 +130,7 @@ func (r *ExtensionRuntime) fetchPolyfill(call goja.FunctionCall) goja.Value {
 		return r.vm.ToValue(result)
 	})
 
-	// arrayBuffer() method - returns body as array (simplified)
 	responseObj.Set("arrayBuffer", func(call goja.FunctionCall) goja.Value {
-		// Return as array of bytes
 		byteArray := make([]interface{}, len(body))
 		for i, b := range body {
 			byteArray[i] = int(b)
@@ -182,7 +165,6 @@ func (r *ExtensionRuntime) atobPolyfill(call goja.FunctionCall) goja.Value {
 	input := call.Arguments[0].String()
 	decoded, err := base64.StdEncoding.DecodeString(input)
 	if err != nil {
-		// Try URL-safe base64
 		decoded, err = base64.URLEncoding.DecodeString(input)
 		if err != nil {
 			GoLog("[Extension:%s] atob decode error: %v\n", r.extensionID, err)
@@ -203,12 +185,10 @@ func (r *ExtensionRuntime) btoaPolyfill(call goja.FunctionCall) goja.Value {
 
 // registerTextEncoderDecoder registers TextEncoder and TextDecoder classes
 func (r *ExtensionRuntime) registerTextEncoderDecoder(vm *goja.Runtime) {
-	// TextEncoder constructor
 	vm.Set("TextEncoder", func(call goja.ConstructorCall) *goja.Object {
 		encoder := call.This
 		encoder.Set("encoding", "utf-8")
 
-		// encode() method - string to Uint8Array
 		encoder.Set("encode", func(call goja.FunctionCall) goja.Value {
 			if len(call.Arguments) < 1 {
 				return vm.ToValue([]byte{})
@@ -216,7 +196,6 @@ func (r *ExtensionRuntime) registerTextEncoderDecoder(vm *goja.Runtime) {
 			input := call.Arguments[0].String()
 			bytes := []byte(input)
 
-			// Return as array (Uint8Array-like)
 			result := make([]interface{}, len(bytes))
 			for i, b := range bytes {
 				result[i] = int(b)
@@ -224,7 +203,6 @@ func (r *ExtensionRuntime) registerTextEncoderDecoder(vm *goja.Runtime) {
 			return vm.ToValue(result)
 		})
 
-		// encodeInto() method
 		encoder.Set("encodeInto", func(call goja.FunctionCall) goja.Value {
 			// Simplified implementation
 			if len(call.Arguments) < 2 {
@@ -240,11 +218,9 @@ func (r *ExtensionRuntime) registerTextEncoderDecoder(vm *goja.Runtime) {
 		return nil
 	})
 
-	// TextDecoder constructor
 	vm.Set("TextDecoder", func(call goja.ConstructorCall) *goja.Object {
 		decoder := call.This
 
-		// Get encoding from arguments (default: utf-8)
 		encoding := "utf-8"
 		if len(call.Arguments) > 0 && !goja.IsUndefined(call.Arguments[0]) {
 			encoding = call.Arguments[0].String()
@@ -253,13 +229,11 @@ func (r *ExtensionRuntime) registerTextEncoderDecoder(vm *goja.Runtime) {
 		decoder.Set("fatal", false)
 		decoder.Set("ignoreBOM", false)
 
-		// decode() method - Uint8Array to string
 		decoder.Set("decode", func(call goja.FunctionCall) goja.Value {
 			if len(call.Arguments) < 1 {
 				return vm.ToValue("")
 			}
 
-			// Handle different input types
 			input := call.Arguments[0].Export()
 			var bytes []byte
 
@@ -279,7 +253,6 @@ func (r *ExtensionRuntime) registerTextEncoderDecoder(vm *goja.Runtime) {
 					}
 				}
 			case string:
-				// Already a string, just return it
 				return vm.ToValue(v)
 			default:
 				return vm.ToValue("")
@@ -292,7 +265,6 @@ func (r *ExtensionRuntime) registerTextEncoderDecoder(vm *goja.Runtime) {
 	})
 }
 
-// registerURLClass registers the URL class for URL parsing
 func (r *ExtensionRuntime) registerURLClass(vm *goja.Runtime) {
 	vm.Set("URL", func(call goja.ConstructorCall) *goja.Object {
 		urlObj := call.This
@@ -304,7 +276,6 @@ func (r *ExtensionRuntime) registerURLClass(vm *goja.Runtime) {
 
 		urlStr := call.Arguments[0].String()
 
-		// Handle relative URLs with base
 		if len(call.Arguments) > 1 && !goja.IsUndefined(call.Arguments[1]) {
 			baseStr := call.Arguments[1].String()
 			baseURL, err := url.Parse(baseStr)
@@ -322,7 +293,6 @@ func (r *ExtensionRuntime) registerURLClass(vm *goja.Runtime) {
 			return nil
 		}
 
-		// Set URL properties
 		urlObj.Set("href", parsed.String())
 		urlObj.Set("protocol", parsed.Scheme+":")
 		urlObj.Set("host", parsed.Host)
@@ -342,10 +312,9 @@ func (r *ExtensionRuntime) registerURLClass(vm *goja.Runtime) {
 		password, _ := parsed.User.Password()
 		urlObj.Set("password", password)
 
-		// searchParams object
-		searchParams := vm.NewObject()
 		queryValues := parsed.Query()
 
+		searchParams := vm.NewObject()
 		searchParams.Set("get", func(call goja.FunctionCall) goja.Value {
 			if len(call.Arguments) < 1 {
 				return goja.Null()
@@ -379,12 +348,10 @@ func (r *ExtensionRuntime) registerURLClass(vm *goja.Runtime) {
 
 		urlObj.Set("searchParams", searchParams)
 
-		// toString method
 		urlObj.Set("toString", func(call goja.FunctionCall) goja.Value {
 			return vm.ToValue(parsed.String())
 		})
 
-		// toJSON method
 		urlObj.Set("toJSON", func(call goja.FunctionCall) goja.Value {
 			return vm.ToValue(parsed.String())
 		})
@@ -392,17 +359,14 @@ func (r *ExtensionRuntime) registerURLClass(vm *goja.Runtime) {
 		return nil
 	})
 
-	// URLSearchParams constructor
 	vm.Set("URLSearchParams", func(call goja.ConstructorCall) *goja.Object {
 		paramsObj := call.This
 		values := url.Values{}
 
-		// Parse initial value if provided
 		if len(call.Arguments) > 0 && !goja.IsUndefined(call.Arguments[0]) {
 			init := call.Arguments[0].Export()
 			switch v := init.(type) {
 			case string:
-				// Parse query string
 				parsed, _ := url.ParseQuery(strings.TrimPrefix(v, "?"))
 				values = parsed
 			case map[string]interface{}:
@@ -468,10 +432,6 @@ func (r *ExtensionRuntime) registerURLClass(vm *goja.Runtime) {
 // registerJSONGlobal ensures JSON global is properly set up
 func (r *ExtensionRuntime) registerJSONGlobal(vm *goja.Runtime) {
 	// JSON is already built-in to Goja, but we can enhance it
-	// This ensures JSON.parse and JSON.stringify work as expected
-
-	// The built-in JSON object should already work, but let's verify
-	// and add any missing functionality if needed
 	jsonScript := `
 		if (typeof JSON === 'undefined') {
 			var JSON = {

go_backend/extension_runtime_storage.go

@@ -17,12 +17,10 @@ import (
 
 // ==================== Storage API ====================
 
-// getStoragePath returns the path to the extension's storage file
 func (r *ExtensionRuntime) getStoragePath() string {
 	return filepath.Join(r.dataDir, "storage.json")
 }
 
-// loadStorage loads the storage data from disk
 func (r *ExtensionRuntime) loadStorage() (map[string]interface{}, error) {
 	storagePath := r.getStoragePath()
 	data, err := os.ReadFile(storagePath)
@@ -41,7 +39,6 @@ func (r *ExtensionRuntime) loadStorage() (map[string]interface{}, error) {
 	return storage, nil
 }
 
-// saveStorage saves the storage data to disk
 func (r *ExtensionRuntime) saveStorage(storage map[string]interface{}) error {
 	storagePath := r.getStoragePath()
 	data, err := json.MarshalIndent(storage, "", "  ")
@@ -52,7 +49,6 @@ func (r *ExtensionRuntime) saveStorage(storage map[string]interface{}) error {
 	return os.WriteFile(storagePath, data, 0644)
 }
 
-// storageGet retrieves a value from storage
 func (r *ExtensionRuntime) storageGet(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 1 {
 		return goja.Undefined()
@@ -68,7 +64,6 @@ func (r *ExtensionRuntime) storageGet(call goja.FunctionCall) goja.Value {
 
 	value, exists := storage[key]
 	if !exists {
-		// Return default value if provided
 		if len(call.Arguments) > 1 {
 			return call.Arguments[1]
 		}
@@ -78,7 +73,6 @@ func (r *ExtensionRuntime) storageGet(call goja.FunctionCall) goja.Value {
 	return r.vm.ToValue(value)
 }
 
-// storageSet stores a value in storage
 func (r *ExtensionRuntime) storageSet(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 2 {
 		return r.vm.ToValue(false)
@@ -103,7 +97,6 @@ func (r *ExtensionRuntime) storageSet(call goja.FunctionCall) goja.Value {
 	return r.vm.ToValue(true)
 }
 
-// storageRemove removes a value from storage
 func (r *ExtensionRuntime) storageRemove(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 1 {
 		return r.vm.ToValue(false)
@@ -127,19 +120,14 @@ func (r *ExtensionRuntime) storageRemove(call goja.FunctionCall) goja.Value {
 	return r.vm.ToValue(true)
 }
 
-// ==================== Credentials API (Encrypted Storage) ====================
-
-// getCredentialsPath returns the path to the extension's encrypted credentials file
 func (r *ExtensionRuntime) getCredentialsPath() string {
 	return filepath.Join(r.dataDir, ".credentials.enc")
 }
 
-// getSaltPath returns the path to the extension's encryption salt file
 func (r *ExtensionRuntime) getSaltPath() string {
 	return filepath.Join(r.dataDir, ".cred_salt")
 }
 
-// getOrCreateSalt gets existing salt or creates a new random one
 func (r *ExtensionRuntime) getOrCreateSalt() ([]byte, error) {
 	saltPath := r.getSaltPath()
 
@@ -160,22 +148,17 @@ func (r *ExtensionRuntime) getOrCreateSalt() ([]byte, error) {
 	return salt, nil
 }
 
-// getEncryptionKey derives an encryption key from extension ID + random salt
 func (r *ExtensionRuntime) getEncryptionKey() ([]byte, error) {
-	// Get or create per-installation random salt
 	salt, err := r.getOrCreateSalt()
 	if err != nil {
 		return nil, err
 	}
 
-	// Combine extension ID + random salt for key derivation
-	// This makes each installation unique, preventing mass decryption attacks
 	combined := append([]byte(r.extensionID), salt...)
 	hash := sha256.Sum256(combined)
 	return hash[:], nil
 }
 
-// loadCredentials loads and decrypts credentials from disk
 func (r *ExtensionRuntime) loadCredentials() (map[string]interface{}, error) {
 	credPath := r.getCredentialsPath()
 	data, err := os.ReadFile(credPath)
@@ -186,7 +169,6 @@ func (r *ExtensionRuntime) loadCredentials() (map[string]interface{}, error) {
 		return nil, err
 	}
 
-	// Decrypt the data
 	key, err := r.getEncryptionKey()
 	if err != nil {
 		return nil, fmt.Errorf("failed to get encryption key: %w", err)
@@ -204,7 +186,6 @@ func (r *ExtensionRuntime) loadCredentials() (map[string]interface{}, error) {
 	return creds, nil
 }
 
-// saveCredentials encrypts and saves credentials to disk
 func (r *ExtensionRuntime) saveCredentials(creds map[string]interface{}) error {
 	data, err := json.Marshal(creds)
 	if err != nil {
@@ -221,10 +202,9 @@ func (r *ExtensionRuntime) saveCredentials(creds map[string]interface{}) error {
 	}
 
 	credPath := r.getCredentialsPath()
-	return os.WriteFile(credPath, encrypted, 0600) // Restrictive permissions
+	return os.WriteFile(credPath, encrypted, 0600)
 }
 
-// credentialsStore stores an encrypted credential
 func (r *ExtensionRuntime) credentialsStore(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 2 {
 		return r.vm.ToValue(map[string]interface{}{
@@ -260,7 +240,6 @@ func (r *ExtensionRuntime) credentialsStore(call goja.FunctionCall) goja.Value {
 	})
 }
 
-// credentialsGet retrieves a decrypted credential
 func (r *ExtensionRuntime) credentialsGet(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 1 {
 		return goja.Undefined()
@@ -276,7 +255,6 @@ func (r *ExtensionRuntime) credentialsGet(call goja.FunctionCall) goja.Value {
 
 	value, exists := creds[key]
 	if !exists {
-		// Return default value if provided
 		if len(call.Arguments) > 1 {
 			return call.Arguments[1]
 		}
@@ -286,7 +264,6 @@ func (r *ExtensionRuntime) credentialsGet(call goja.FunctionCall) goja.Value {
 	return r.vm.ToValue(value)
 }
 
-// credentialsRemove removes a credential
 func (r *ExtensionRuntime) credentialsRemove(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 1 {
 		return r.vm.ToValue(false)
@@ -310,7 +287,6 @@ func (r *ExtensionRuntime) credentialsRemove(call goja.FunctionCall) goja.Value
 	return r.vm.ToValue(true)
 }
 
-// credentialsHas checks if a credential exists
 func (r *ExtensionRuntime) credentialsHas(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 1 {
 		return r.vm.ToValue(false)
@@ -327,9 +303,6 @@ func (r *ExtensionRuntime) credentialsHas(call goja.FunctionCall) goja.Value {
 	return r.vm.ToValue(exists)
 }
 
-// ==================== Crypto Utilities ====================
-
-// encryptAES encrypts data using AES-GCM
 func encryptAES(plaintext []byte, key []byte) ([]byte, error) {
 	block, err := aes.NewCipher(key)
 	if err != nil {
@@ -350,7 +323,6 @@ func encryptAES(plaintext []byte, key []byte) ([]byte, error) {
 	return ciphertext, nil
 }
 
-// decryptAES decrypts data using AES-GCM
 func decryptAES(ciphertext []byte, key []byte) ([]byte, error) {
 	block, err := aes.NewCipher(key)
 	if err != nil {

go_backend/extension_runtime_utils.go

@@ -19,7 +19,6 @@ import (
 
 // ==================== Utility Functions ====================
 
-// base64Encode encodes a string to base64
 func (r *ExtensionRuntime) base64Encode(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 1 {
 		return r.vm.ToValue("")
@@ -28,7 +27,6 @@ func (r *ExtensionRuntime) base64Encode(call goja.FunctionCall) goja.Value {
 	return r.vm.ToValue(base64.StdEncoding.EncodeToString([]byte(input)))
 }
 
-// base64Decode decodes a base64 string
 func (r *ExtensionRuntime) base64Decode(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 1 {
 		return r.vm.ToValue("")
@@ -41,7 +39,6 @@ func (r *ExtensionRuntime) base64Decode(call goja.FunctionCall) goja.Value {
 	return r.vm.ToValue(string(decoded))
 }
 
-// md5Hash computes MD5 hash of a string
 func (r *ExtensionRuntime) md5Hash(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 1 {
 		return r.vm.ToValue("")
@@ -51,7 +48,6 @@ func (r *ExtensionRuntime) md5Hash(call goja.FunctionCall) goja.Value {
 	return r.vm.ToValue(hex.EncodeToString(hash[:]))
 }
 
-// sha256Hash computes SHA256 hash of a string
 func (r *ExtensionRuntime) sha256Hash(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 1 {
 		return r.vm.ToValue("")
@@ -61,7 +57,6 @@ func (r *ExtensionRuntime) sha256Hash(call goja.FunctionCall) goja.Value {
 	return r.vm.ToValue(hex.EncodeToString(hash[:]))
 }
 
-// hmacSHA256 computes HMAC-SHA256 of a message with a key
 func (r *ExtensionRuntime) hmacSHA256(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 2 {
 		return r.vm.ToValue("")
@@ -74,7 +69,6 @@ func (r *ExtensionRuntime) hmacSHA256(call goja.FunctionCall) goja.Value {
 	return r.vm.ToValue(hex.EncodeToString(mac.Sum(nil)))
 }
 
-// hmacSHA256Base64 computes HMAC-SHA256 and returns base64 encoded result
 func (r *ExtensionRuntime) hmacSHA256Base64(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 2 {
 		return r.vm.ToValue("")
@@ -87,9 +81,6 @@ func (r *ExtensionRuntime) hmacSHA256Base64(call goja.FunctionCall) goja.Value {
 	return r.vm.ToValue(base64.StdEncoding.EncodeToString(mac.Sum(nil)))
 }
 
-// hmacSHA1 computes HMAC-SHA1 of a message with a key (for TOTP)
-// Arguments: message (string or array of bytes), key (string or array of bytes)
-// Returns: array of bytes (for TOTP dynamic truncation)
 func (r *ExtensionRuntime) hmacSHA1(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 2 {
 		return r.vm.ToValue([]byte{})
@@ -142,7 +133,6 @@ func (r *ExtensionRuntime) hmacSHA1(call goja.FunctionCall) goja.Value {
 	return r.vm.ToValue(jsArray)
 }
 
-// parseJSON parses a JSON string
 func (r *ExtensionRuntime) parseJSON(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 1 {
 		return goja.Undefined()
@@ -158,7 +148,6 @@ func (r *ExtensionRuntime) parseJSON(call goja.FunctionCall) goja.Value {
 	return r.vm.ToValue(result)
 }
 
-// stringifyJSON converts a value to JSON string
 func (r *ExtensionRuntime) stringifyJSON(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 1 {
 		return r.vm.ToValue("")
@@ -174,9 +163,6 @@ func (r *ExtensionRuntime) stringifyJSON(call goja.FunctionCall) goja.Value {
 	return r.vm.ToValue(string(data))
 }
 
-// ==================== Crypto Utilities for Extensions ====================
-
-// cryptoEncrypt encrypts a string using AES-GCM (for extension use)
 func (r *ExtensionRuntime) cryptoEncrypt(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 2 {
 		return r.vm.ToValue(map[string]interface{}{
@@ -188,7 +174,6 @@ func (r *ExtensionRuntime) cryptoEncrypt(call goja.FunctionCall) goja.Value {
 	plaintext := call.Arguments[0].String()
 	keyStr := call.Arguments[1].String()
 
-	// Derive 32-byte key from provided key string
 	keyHash := sha256.Sum256([]byte(keyStr))
 
 	encrypted, err := encryptAES([]byte(plaintext), keyHash[:])
@@ -205,7 +190,6 @@ func (r *ExtensionRuntime) cryptoEncrypt(call goja.FunctionCall) goja.Value {
 	})
 }
 
-// cryptoDecrypt decrypts a string using AES-GCM (for extension use)
 func (r *ExtensionRuntime) cryptoDecrypt(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 2 {
 		return r.vm.ToValue(map[string]interface{}{
@@ -225,14 +209,13 @@ func (r *ExtensionRuntime) cryptoDecrypt(call goja.FunctionCall) goja.Value {
 		})
 	}
 
-	// Derive 32-byte key from provided key string
 	keyHash := sha256.Sum256([]byte(keyStr))
 
 	decrypted, err := decryptAES(ciphertext, keyHash[:])
 	if err != nil {
 		return r.vm.ToValue(map[string]interface{}{
 			"success": false,
-			"error":   err.Error(),
+			"error":   "invalid base64 ciphertext",
 		})
 	}
 
@@ -242,9 +225,8 @@ func (r *ExtensionRuntime) cryptoDecrypt(call goja.FunctionCall) goja.Value {
 	})
 }
 
-// cryptoGenerateKey generates a random encryption key
 func (r *ExtensionRuntime) cryptoGenerateKey(call goja.FunctionCall) goja.Value {
-	length := 32 // Default 256-bit key
+	length := 32
 	if len(call.Arguments) > 0 && !goja.IsUndefined(call.Arguments[0]) {
 		if l, ok := call.Arguments[0].Export().(float64); ok {
 			length = int(l)
@@ -266,13 +248,10 @@ func (r *ExtensionRuntime) cryptoGenerateKey(call goja.FunctionCall) goja.Value
 	})
 }
 
-// randomUserAgent returns a random Chrome User-Agent string
 func (r *ExtensionRuntime) randomUserAgent(call goja.FunctionCall) goja.Value {
 	return r.vm.ToValue(getRandomUserAgent())
 }
 
-// ==================== Logging Functions ====================
-
 func (r *ExtensionRuntime) logDebug(call goja.FunctionCall) goja.Value {
 	msg := r.formatLogArgs(call.Arguments)
 	GoLog("[Extension:%s:DEBUG] %s\n", r.extensionID, msg)
@@ -305,8 +284,6 @@ func (r *ExtensionRuntime) formatLogArgs(args []goja.Value) string {
 	return strings.Join(parts, " ")
 }
 
-// ==================== Go Backend Wrappers ====================
-
 func (r *ExtensionRuntime) sanitizeFilenameWrapper(call goja.FunctionCall) goja.Value {
 	if len(call.Arguments) < 1 {
 		return r.vm.ToValue("")
@@ -315,7 +292,6 @@ func (r *ExtensionRuntime) sanitizeFilenameWrapper(call goja.FunctionCall) goja.
 	return r.vm.ToValue(sanitizeFilename(input))
 }
 
-// RegisterGoBackendAPIs adds more Go backend functions to the VM
 func (r *ExtensionRuntime) RegisterGoBackendAPIs(vm *goja.Runtime) {
 	gobackendObj := vm.Get("gobackend")
 	if gobackendObj == nil || goja.IsUndefined(gobackendObj) {
@@ -325,7 +301,6 @@ func (r *ExtensionRuntime) RegisterGoBackendAPIs(vm *goja.Runtime) {
 
 	obj := gobackendObj.(*goja.Object)
 
-	// Expose sanitizeFilename
 	obj.Set("sanitizeFilename", func(call goja.FunctionCall) goja.Value {
 		if len(call.Arguments) < 1 {
 			return vm.ToValue("")
@@ -333,7 +308,6 @@ func (r *ExtensionRuntime) RegisterGoBackendAPIs(vm *goja.Runtime) {
 		return vm.ToValue(sanitizeFilename(call.Arguments[0].String()))
 	})
 
-	// Expose getAudioQuality
 	obj.Set("getAudioQuality", func(call goja.FunctionCall) goja.Value {
 		if len(call.Arguments) < 1 {
 			return vm.ToValue(map[string]interface{}{
@@ -356,7 +330,6 @@ func (r *ExtensionRuntime) RegisterGoBackendAPIs(vm *goja.Runtime) {
 		})
 	})
 
-	// Expose buildFilename
 	obj.Set("buildFilename", func(call goja.FunctionCall) goja.Value {
 		if len(call.Arguments) < 2 {
 			return vm.ToValue("")
@@ -373,7 +346,6 @@ func (r *ExtensionRuntime) RegisterGoBackendAPIs(vm *goja.Runtime) {
 		return vm.ToValue(buildFilenameFromTemplate(template, metadata))
 	})
 
-	// Expose getLocalTime - returns device local time info
 	obj.Set("getLocalTime", func(call goja.FunctionCall) goja.Value {
 		now := time.Now()
 		_, offsetSeconds := now.Zone()

go_backend/extension_settings.go

@@ -9,20 +9,17 @@ import (
 	"sync"
 )
 
-// ExtensionSettingsStore manages settings for all extensions
 type ExtensionSettingsStore struct {
 	mu       sync.RWMutex
 	dataDir  string
 	settings map[string]map[string]interface{} // extensionID -> settings
 }
 
-// Global settings store
 var (
 	globalSettingsStore     *ExtensionSettingsStore
 	globalSettingsStoreOnce sync.Once
 )
 
-// GetExtensionSettingsStore returns the global settings store
 func GetExtensionSettingsStore() *ExtensionSettingsStore {
 	globalSettingsStoreOnce.Do(func() {
 		globalSettingsStore = &ExtensionSettingsStore{
@@ -32,7 +29,6 @@ func GetExtensionSettingsStore() *ExtensionSettingsStore {
 	return globalSettingsStore
 }
 
-// SetDataDir sets the data directory for settings storage
 func (s *ExtensionSettingsStore) SetDataDir(dataDir string) error {
 	s.mu.Lock()
 	defer s.mu.Unlock()
@@ -45,12 +41,10 @@ func (s *ExtensionSettingsStore) SetDataDir(dataDir string) error {
 	return s.loadAllSettings()
 }
 
-// getSettingsPath returns the path to an extension's settings file
 func (s *ExtensionSettingsStore) getSettingsPath(extensionID string) string {
 	return filepath.Join(s.dataDir, extensionID, "settings.json")
 }
 
-// loadAllSettings loads settings for all extensions from disk
 func (s *ExtensionSettingsStore) loadAllSettings() error {
 	entries, err := os.ReadDir(s.dataDir)
 	if err != nil {
@@ -75,7 +69,6 @@ func (s *ExtensionSettingsStore) loadAllSettings() error {
 	return nil
 }
 
-// loadSettings loads settings for a specific extension
 func (s *ExtensionSettingsStore) loadSettings(extensionID string) (map[string]interface{}, error) {
 	settingsPath := s.getSettingsPath(extensionID)
 	data, err := os.ReadFile(settingsPath)
@@ -94,7 +87,6 @@ func (s *ExtensionSettingsStore) loadSettings(extensionID string) (map[string]in
 	return settings, nil
 }
 
-// saveSettings saves settings for a specific extension
 func (s *ExtensionSettingsStore) saveSettings(extensionID string, settings map[string]interface{}) error {
 	settingsPath := s.getSettingsPath(extensionID)
 
@@ -111,8 +103,6 @@ func (s *ExtensionSettingsStore) saveSettings(extensionID string, settings map[s
 	return os.WriteFile(settingsPath, data, 0644)
 }
 
-// Get retrieves a setting value for an extension
-// Returns error if extension or key not found (gomobile compatible)
 func (s *ExtensionSettingsStore) Get(extensionID, key string) (interface{}, error) {
 	s.mu.RLock()
 	defer s.mu.RUnlock()
@@ -129,7 +119,6 @@ func (s *ExtensionSettingsStore) Get(extensionID, key string) (interface{}, erro
 	return value, nil
 }
 
-// GetAll retrieves all settings for an extension
 func (s *ExtensionSettingsStore) GetAll(extensionID string) map[string]interface{} {
 	s.mu.RLock()
 	defer s.mu.RUnlock()
@@ -139,7 +128,6 @@ func (s *ExtensionSettingsStore) GetAll(extensionID string) map[string]interface
 		return make(map[string]interface{})
 	}
 
-	// Return a copy
 	result := make(map[string]interface{})
 	for k, v := range extSettings {
 		result[k] = v
@@ -147,7 +135,6 @@ func (s *ExtensionSettingsStore) GetAll(extensionID string) map[string]interface
 	return result
 }
 
-// Set stores a setting value for an extension
 func (s *ExtensionSettingsStore) Set(extensionID, key string, value interface{}) error {
 	s.mu.Lock()
 	defer s.mu.Unlock()
@@ -161,18 +148,15 @@ func (s *ExtensionSettingsStore) Set(extensionID, key string, value interface{})
 	return s.saveSettings(extensionID, s.settings[extensionID])
 }
 
-// SetAll stores all settings for an extension
 func (s *ExtensionSettingsStore) SetAll(extensionID string, settings map[string]interface{}) error {
 	s.mu.Lock()
 	defer s.mu.Unlock()
 
 	s.settings[extensionID] = settings
 
-	// Persist to disk
 	return s.saveSettings(extensionID, settings)
 }
 
-// Remove removes a setting for an extension
 func (s *ExtensionSettingsStore) Remove(extensionID, key string) error {
 	s.mu.Lock()
 	defer s.mu.Unlock()
@@ -184,11 +168,9 @@ func (s *ExtensionSettingsStore) Remove(extensionID, key string) error {
 
 	delete(extSettings, key)
 
-	// Persist to disk
 	return s.saveSettings(extensionID, extSettings)
 }
 
-// RemoveAll removes all settings for an extension
 func (s *ExtensionSettingsStore) RemoveAll(extensionID string) error {
 	s.mu.Lock()
 	defer s.mu.Unlock()
@@ -203,7 +185,6 @@ func (s *ExtensionSettingsStore) RemoveAll(extensionID string) error {
 	return nil
 }
 
-// GetAllExtensionSettings returns settings for all extensions as JSON
 func (s *ExtensionSettingsStore) GetAllExtensionSettingsJSON() (string, error) {
 	s.mu.RLock()
 	defer s.mu.RUnlock()

go_backend/extension_store.go

@@ -5,13 +5,13 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"net/url"
 	"os"
 	"path/filepath"
 	"sync"
 	"time"
 )
 
-// Extension categories
 const (
 	CategoryMetadata    = "metadata"
 	CategoryDownload    = "download"
@@ -20,28 +20,26 @@ const (
 	CategoryIntegration = "integration"
 )
 
-// StoreExtension represents an extension in the store
 type StoreExtension struct {
-	ID            string   `json:"id"`
-	Name          string   `json:"name"`
-	DisplayName   string   `json:"display_name,omitempty"`
-	Version       string   `json:"version"`
-	Author        string   `json:"author"`
-	Description   string   `json:"description"`
-	DownloadURL   string   `json:"download_url,omitempty"`
-	IconURL       string   `json:"icon_url,omitempty"`
-	Category      string   `json:"category"`
-	Tags          []string `json:"tags,omitempty"`
-	Downloads     int      `json:"downloads"`
-	UpdatedAt     string   `json:"updated_at"`
-	MinAppVersion string   `json:"min_app_version,omitempty"`
-	DisplayNameAlt   string `json:"displayName,omitempty"`
-	DownloadURLAlt   string `json:"downloadUrl,omitempty"`
-	IconURLAlt       string `json:"iconUrl,omitempty"`
-	MinAppVersionAlt string `json:"minAppVersion,omitempty"`
+	ID               string   `json:"id"`
+	Name             string   `json:"name"`
+	DisplayName      string   `json:"display_name,omitempty"`
+	Version          string   `json:"version"`
+	Author           string   `json:"author"`
+	Description      string   `json:"description"`
+	DownloadURL      string   `json:"download_url,omitempty"`
+	IconURL          string   `json:"icon_url,omitempty"`
+	Category         string   `json:"category"`
+	Tags             []string `json:"tags,omitempty"`
+	Downloads        int      `json:"downloads"`
+	UpdatedAt        string   `json:"updated_at"`
+	MinAppVersion    string   `json:"min_app_version,omitempty"`
+	DisplayNameAlt   string   `json:"displayName,omitempty"`
+	DownloadURLAlt   string   `json:"downloadUrl,omitempty"`
+	IconURLAlt       string   `json:"iconUrl,omitempty"`
+	MinAppVersionAlt string   `json:"minAppVersion,omitempty"`
 }
 
-// getDisplayName returns display name, falling back to name (private to avoid gomobile conflict)
 func (e *StoreExtension) getDisplayName() string {
 	if e.DisplayName != "" {
 		return e.DisplayName
@@ -52,7 +50,6 @@ func (e *StoreExtension) getDisplayName() string {
 	return e.Name
 }
 
-// getDownloadURL returns download URL from either field (private to avoid gomobile conflict)
 func (e *StoreExtension) getDownloadURL() string {
 	if e.DownloadURL != "" {
 		return e.DownloadURL
@@ -60,7 +57,6 @@ func (e *StoreExtension) getDownloadURL() string {
 	return e.DownloadURLAlt
 }
 
-// getIconURL returns icon URL from either field (private to avoid gomobile conflict)
 func (e *StoreExtension) getIconURL() string {
 	if e.IconURL != "" {
 		return e.IconURL
@@ -68,7 +64,6 @@ func (e *StoreExtension) getIconURL() string {
 	return e.IconURLAlt
 }
 
-// getMinAppVersion returns min app version from either field (private to avoid gomobile conflict)
 func (e *StoreExtension) getMinAppVersion() string {
 	if e.MinAppVersion != "" {
 		return e.MinAppVersion
@@ -76,7 +71,6 @@ func (e *StoreExtension) getMinAppVersion() string {
 	return e.MinAppVersionAlt
 }
 
-// StoreRegistry represents the extension registry
 type StoreRegistry struct {
 	Version    int              `json:"version"`
 	UpdatedAt  string           `json:"updated_at"`
@@ -103,7 +97,6 @@ type StoreExtensionResponse struct {
 	HasUpdate        bool     `json:"has_update"`
 }
 
-// ToResponse converts StoreExtension to normalized response
 func (e *StoreExtension) ToResponse() StoreExtensionResponse {
 	return StoreExtensionResponse{
 		ID:            e.ID,
@@ -122,7 +115,6 @@ func (e *StoreExtension) ToResponse() StoreExtensionResponse {
 	}
 }
 
-// ExtensionStore manages the extension store
 type ExtensionStore struct {
 	registryURL string
 	cacheDir    string
@@ -143,7 +135,6 @@ const (
 	cacheFileName      = "store_cache.json"
 )
 
-// InitExtensionStore initializes the extension store
 func InitExtensionStore(cacheDir string) *ExtensionStore {
 	extensionStoreMu.Lock()
 	defer extensionStoreMu.Unlock()
@@ -154,20 +145,17 @@ func InitExtensionStore(cacheDir string) *ExtensionStore {
 			cacheDir:    cacheDir,
 			cacheTTL:    cacheTTL,
 		}
-		// Try to load from disk cache
 		extensionStore.loadDiskCache()
 	}
 	return extensionStore
 }
 
-// GetExtensionStore returns the singleton store instance
 func GetExtensionStore() *ExtensionStore {
 	extensionStoreMu.Lock()
 	defer extensionStoreMu.Unlock()
 	return extensionStore
 }
 
-// loadDiskCache loads cached registry from disk
 func (s *ExtensionStore) loadDiskCache() {
 	if s.cacheDir == "" {
 		return
@@ -193,7 +181,6 @@ func (s *ExtensionStore) loadDiskCache() {
 	LogDebug("ExtensionStore", "Loaded %d extensions from disk cache", len(s.cache.Extensions))
 }
 
-// saveDiskCache saves registry to disk cache
 func (s *ExtensionStore) saveDiskCache() {
 	if s.cacheDir == "" || s.cache == nil {
 		return
@@ -216,23 +203,24 @@ func (s *ExtensionStore) saveDiskCache() {
 	os.WriteFile(cachePath, data, 0644)
 }
 
-// FetchRegistry fetches the extension registry from GitHub
 func (s *ExtensionStore) FetchRegistry(forceRefresh bool) (*StoreRegistry, error) {
 	s.cacheMu.Lock()
 	defer s.cacheMu.Unlock()
 
-	// Return cached if valid and not forcing refresh
 	if !forceRefresh && s.cache != nil && time.Since(s.cacheTime) < s.cacheTTL {
 		LogDebug("ExtensionStore", "Using cached registry (%d extensions)", len(s.cache.Extensions))
 		return s.cache, nil
 	}
 
+	if err := requireHTTPSURL(s.registryURL, "registry"); err != nil {
+		return nil, err
+	}
+
 	LogInfo("ExtensionStore", "Fetching registry from %s", s.registryURL)
 
 	client := &http.Client{Timeout: 30 * time.Second}
 	resp, err := client.Get(s.registryURL)
 	if err != nil {
-		// Return cached data if available on network error
 		if s.cache != nil {
 			LogWarn("ExtensionStore", "Network error, using cached registry: %v", err)
 			return s.cache, nil
@@ -267,7 +255,6 @@ func (s *ExtensionStore) FetchRegistry(forceRefresh bool) (*StoreRegistry, error
 	return &registry, nil
 }
 
-// GetExtensionsWithStatus returns extensions with installation status
 func (s *ExtensionStore) GetExtensionsWithStatus() ([]StoreExtensionResponse, error) {
 	registry, err := s.FetchRegistry(false)
 	if err != nil {
@@ -299,7 +286,6 @@ func (s *ExtensionStore) GetExtensionsWithStatus() ([]StoreExtensionResponse, er
 	return result, nil
 }
 
-// DownloadExtension downloads an extension package to the specified path
 func (s *ExtensionStore) DownloadExtension(extensionID string, destPath string) error {
 	registry, err := s.FetchRegistry(false)
 	if err != nil {
@@ -318,6 +304,10 @@ func (s *ExtensionStore) DownloadExtension(extensionID string, destPath string)
 		return fmt.Errorf("extension %s not found in store", extensionID)
 	}
 
+	if err := requireHTTPSURL(ext.getDownloadURL(), "extension download"); err != nil {
+		return err
+	}
+
 	LogInfo("ExtensionStore", "Downloading %s from %s", ext.getDisplayName(), ext.getDownloadURL())
 
 	client := &http.Client{Timeout: 5 * time.Minute}
@@ -347,7 +337,20 @@ func (s *ExtensionStore) DownloadExtension(extensionID string, destPath string)
 	return nil
 }
 
-// GetCategories returns all available categories
+func requireHTTPSURL(rawURL string, context string) error {
+	if rawURL == "" {
+		return fmt.Errorf("%s URL is empty", context)
+	}
+	parsed, err := url.Parse(rawURL)
+	if err != nil || parsed.Host == "" {
+		return fmt.Errorf("%s URL is invalid: %s", context, rawURL)
+	}
+	if parsed.Scheme != "https" {
+		return fmt.Errorf("%s URL must use https: %s", context, rawURL)
+	}
+	return nil
+}
+
 func (s *ExtensionStore) GetCategories() []string {
 	return []string{
 		CategoryMetadata,
@@ -358,7 +361,6 @@ func (s *ExtensionStore) GetCategories() []string {
 	}
 }
 
-// SearchExtensions searches extensions by query
 func (s *ExtensionStore) SearchExtensions(query string, category string) ([]StoreExtensionResponse, error) {
 	extensions, err := s.GetExtensionsWithStatus()
 	if err != nil {
@@ -404,7 +406,6 @@ func (s *ExtensionStore) SearchExtensions(query string, category string) ([]Stor
 	return result, nil
 }
 
-// ClearCache clears the in-memory and disk cache
 func (s *ExtensionStore) ClearCache() {
 	s.cacheMu.Lock()
 	defer s.cacheMu.Unlock()

go_backend/extension_test.go

@@ -112,7 +112,6 @@ func TestExtensionRuntime_NetworkSandbox(t *testing.T) {
 
 	runtime := NewExtensionRuntime(ext)
 
-	// Test allowed domains
 	if err := runtime.validateDomain("https://api.allowed.com/path"); err != nil {
 		t.Errorf("Expected api.allowed.com to be allowed, got error: %v", err)
 	}
@@ -121,7 +120,6 @@ func TestExtensionRuntime_NetworkSandbox(t *testing.T) {
 		t.Errorf("Expected sub.wildcard.com to be allowed (wildcard), got error: %v", err)
 	}
 
-	// Test blocked domains
 	if err := runtime.validateDomain("https://blocked.com/path"); err == nil {
 		t.Error("Expected blocked.com to be denied")
 	}
@@ -139,7 +137,7 @@ func TestExtensionRuntime_FileSandbox(t *testing.T) {
 		Manifest: &ExtensionManifest{
 			Name: "test-ext",
 			Permissions: ExtensionPermissions{
-				File: true, // Enable file permission for test
+				File: true,
 			},
 		},
 		DataDir: tempDir,
@@ -147,7 +145,6 @@ func TestExtensionRuntime_FileSandbox(t *testing.T) {
 
 	runtime := NewExtensionRuntime(ext)
 
-	// Test valid path within sandbox
 	validPath, err := runtime.validatePath("test.txt")
 	if err != nil {
 		t.Errorf("Expected relative path to be valid, got error: %v", err)
@@ -156,13 +153,11 @@ func TestExtensionRuntime_FileSandbox(t *testing.T) {
 		t.Error("Expected non-empty path")
 	}
 
-	// Test path traversal attack
 	_, err = runtime.validatePath("../../../etc/passwd")
 	if err == nil {
 		t.Error("Expected path traversal to be blocked")
 	}
 
-	// Test nested path within sandbox (should be allowed)
 	nestedPath, err := runtime.validatePath("subdir/file.txt")
 	if err != nil {
 		t.Errorf("Expected nested path to be valid, got error: %v", err)
@@ -171,26 +166,23 @@ func TestExtensionRuntime_FileSandbox(t *testing.T) {
 		t.Error("Expected non-empty nested path")
 	}
 
-	// Test absolute path should be blocked (security fix)
-	// Use platform-appropriate absolute path
 	var absPath string
 	if filepath.IsAbs("C:\\Windows\\System32") {
-		absPath = "C:\\Windows\\System32\\test.txt" // Windows
+		absPath = "C:\\Windows\\System32\\test.txt"
 	} else {
-		absPath = "/etc/passwd" // Unix
+		absPath = "/etc/passwd"
 	}
 	_, err = runtime.validatePath(absPath)
 	if err == nil {
 		t.Error("Expected absolute path to be blocked")
 	}
 
-	// Test that extension without file permission is blocked
 	extNoFile := &LoadedExtension{
 		ID: "test-ext-no-file",
 		Manifest: &ExtensionManifest{
 			Name: "test-ext-no-file",
 			Permissions: ExtensionPermissions{
-				File: false, // No file permission
+				File: false,
 			},
 		},
 		DataDir: tempDir,
@@ -215,7 +207,6 @@ func TestExtensionRuntime_UtilityFunctions(t *testing.T) {
 	vm := goja.New()
 	runtime.RegisterAPIs(vm)
 
-	// Test base64 encode/decode
 	result, err := vm.RunString(`utils.base64Encode("hello")`)
 	if err != nil {
 		t.Fatalf("base64Encode failed: %v", err)
@@ -232,7 +223,6 @@ func TestExtensionRuntime_UtilityFunctions(t *testing.T) {
 		t.Errorf("Expected 'hello', got '%s'", result.String())
 	}
 
-	// Test MD5
 	result, err = vm.RunString(`utils.md5("hello")`)
 	if err != nil {
 		t.Fatalf("md5 failed: %v", err)
@@ -241,7 +231,6 @@ func TestExtensionRuntime_UtilityFunctions(t *testing.T) {
 		t.Errorf("Expected '5d41402abc4b2a76b9719d911017c592', got '%s'", result.String())
 	}
 
-	// Test JSON parse/stringify
 	result, err = vm.RunString(`utils.stringifyJSON({name: "test", value: 123})`)
 	if err != nil {
 		t.Fatalf("stringifyJSON failed: %v", err)
@@ -267,7 +256,6 @@ func TestExtensionRuntime_SSRFProtection(t *testing.T) {
 
 	runtime := NewExtensionRuntime(ext)
 
-	// Test that private IPs are blocked (SSRF protection)
 	privateIPs := []string{
 		"http://localhost/admin",
 		"http://127.0.0.1/admin",
@@ -285,7 +273,6 @@ func TestExtensionRuntime_SSRFProtection(t *testing.T) {
 		}
 	}
 
-	// Test that allowed public domain still works
 	if err := runtime.validateDomain("https://api.example.com/path"); err != nil {
 		t.Errorf("Expected api.example.com to be allowed, got error: %v", err)
 	}
@@ -296,7 +283,6 @@ func TestIsPrivateIP(t *testing.T) {
 		host     string
 		expected bool
 	}{
-		// Private IPs should be blocked
 		{"localhost", true},
 		{"127.0.0.1", true},
 		{"127.0.0.2", true},
@@ -306,18 +292,17 @@ func TestIsPrivateIP(t *testing.T) {
 		{"172.31.255.255", true},
 		{"192.168.0.1", true},
 		{"192.168.255.255", true},
-		{"169.254.169.254", true}, // AWS metadata
+		{"169.254.169.254", true},
 		{"router.local", true},
 		{"mydevice.local", true},
 
-		// Public IPs should be allowed
 		{"8.8.8.8", false},
 		{"1.1.1.1", false},
 		{"api.example.com", false},
 		{"google.com", false},
-		{"172.15.0.1", false},  // Just outside 172.16-31 range
-		{"172.32.0.1", false},  // Just outside 172.16-31 range
-		{"192.167.0.1", false}, // Not 192.168.x.x
+		{"172.15.0.1", false},
+		{"172.32.0.1", false},
+		{"192.167.0.1", false},
 	}
 
 	for _, tt := range tests {

go_backend/extension_timeout.go

@@ -10,7 +10,6 @@ import (
 	"github.com/dop251/goja"
 )
 
-// JSExecutionError represents an error during JS execution
 type JSExecutionError struct {
 	Message   string
 	IsTimeout bool
@@ -20,8 +19,6 @@ func (e *JSExecutionError) Error() string {
 	return e.Message
 }
 
-// RunWithTimeout executes JavaScript code with a timeout
-// Returns the result value and any error (including timeout)
 func RunWithTimeout(vm *goja.Runtime, script string, timeout time.Duration) (goja.Value, error) {
 	if timeout <= 0 {
 		timeout = DefaultJSTimeout
@@ -30,22 +27,18 @@ func RunWithTimeout(vm *goja.Runtime, script string, timeout time.Duration) (goj
 	ctx, cancel := context.WithTimeout(context.Background(), timeout)
 	defer cancel()
 
-	// Channel to receive result
 	type result struct {
 		value goja.Value
 		err   error
 	}
 	resultCh := make(chan result, 1)
 
-	// Track if we've interrupted
 	var interrupted bool
 	var interruptMu sync.Mutex
 
-	// Run script in goroutine
 	go func() {
 		defer func() {
 			if r := recover(); r != nil {
-				// Check if this was our interrupt
 				interruptMu.Lock()
 				wasInterrupted := interrupted
 				interruptMu.Unlock()
@@ -65,22 +58,18 @@ func RunWithTimeout(vm *goja.Runtime, script string, timeout time.Duration) (goj
 		resultCh <- result{val, err}
 	}()
 
-	// Wait for result or timeout
 	select {
 	case res := <-resultCh:
 		return res.value, res.err
 	case <-ctx.Done():
-		// Timeout - interrupt the VM
 		interruptMu.Lock()
 		interrupted = true
 		interruptMu.Unlock()
 
 		vm.Interrupt("execution timeout")
 
-		// Wait a bit for the goroutine to finish
 		select {
 		case res := <-resultCh:
-			// If we got a result after interrupt, it might be the timeout error
 			if res.err != nil {
 				return nil, res.err
 			}
@@ -89,7 +78,6 @@ func RunWithTimeout(vm *goja.Runtime, script string, timeout time.Duration) (goj
 				IsTimeout: true,
 			}
 		case <-time.After(1 * time.Second):
-			// Force return timeout error
 			return nil, &JSExecutionError{
 				Message:   "execution timeout exceeded (force)",
 				IsTimeout: true,
@@ -109,7 +97,6 @@ func RunWithTimeoutAndRecover(vm *goja.Runtime, script string, timeout time.Dura
 	return result, err
 }
 
-// IsTimeoutError checks if an error is a timeout error
 func IsTimeoutError(err error) bool {
 	if jsErr, ok := err.(*JSExecutionError); ok {
 		return jsErr.IsTimeout

go_backend/go.mod

@@ -1,23 +1,29 @@
 module github.com/zarz/spotiflac_android/go_backend
 
-go 1.24.0
+go 1.25.0
 
-toolchain go1.24.5
+toolchain go1.25.6
 
 require (
 	github.com/dop251/goja v0.0.0-20260106131823-651366fbe6e3
 	github.com/go-flac/flacpicture v0.3.0
 	github.com/go-flac/flacvorbis v0.2.0
 	github.com/go-flac/go-flac v1.0.0
+	github.com/refraction-networking/utls v1.8.2
+	golang.org/x/mobile v0.0.0-20260120165949-40bd9ace6ce4
+	golang.org/x/net v0.49.0
 )
 
 require (
+	github.com/andybalholm/brotli v1.0.6 // indirect
 	github.com/dlclark/regexp2 v1.11.4 // indirect
 	github.com/go-sourcemap/sourcemap v2.1.3+incompatible // indirect
 	github.com/google/pprof v0.0.0-20230207041349-798e818bf904 // indirect
-	golang.org/x/mobile v0.0.0-20251209145715-2553ed8ce294 // indirect
-	golang.org/x/mod v0.31.0 // indirect
+	github.com/klauspost/compress v1.17.4 // indirect
+	golang.org/x/crypto v0.47.0 // indirect
+	golang.org/x/mod v0.32.0 // indirect
 	golang.org/x/sync v0.19.0 // indirect
-	golang.org/x/text v0.3.8 // indirect
-	golang.org/x/tools v0.40.0 // indirect
+	golang.org/x/sys v0.40.0 // indirect
+	golang.org/x/text v0.33.0 // indirect
+	golang.org/x/tools v0.41.0 // indirect
 )

go_backend/go.sum

@@ -1,5 +1,7 @@
 github.com/Masterminds/semver/v3 v3.2.1 h1:RN9w6+7QoMeJVGyfmbcgs28Br8cvmnucEXnY0rYXWg0=
 github.com/Masterminds/semver/v3 v3.2.1/go.mod h1:qvl/7zhW3nngYb5+80sSMF+FG2BjYrf8m9wsX0PNOMQ=
+github.com/andybalholm/brotli v1.0.6 h1:Yf9fFpf49Zrxb9NlQaluyE92/+X7UVHlhMNJN2sxfOI=
+github.com/andybalholm/brotli v1.0.6/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
 github.com/dlclark/regexp2 v1.11.4 h1:rPYF9/LECdNymJufQKmri9gV604RvvABwgOA8un7yAo=
 github.com/dlclark/regexp2 v1.11.4/go.mod h1:DHkYz0B9wPfa6wondMfaivmHpzrQ3v9q8cnmRbL6yW8=
 github.com/dop251/goja v0.0.0-20260106131823-651366fbe6e3 h1:bVp3yUzvSAJzu9GqID+Z96P+eu5TKnIMJSV4QaZMauM=
@@ -12,17 +14,29 @@ github.com/go-flac/go-flac v1.0.0 h1:6qI9XOVLcO50xpzm3nXvO31BgDgHhnr/p/rER/K/doY
 github.com/go-flac/go-flac v1.0.0/go.mod h1:WnZhcpmq4u1UdZMNn9LYSoASpWOCMOoxXxcWEHSzkW8=
 github.com/go-sourcemap/sourcemap v2.1.3+incompatible h1:W1iEw64niKVGogNgBN3ePyLFfuisuzeidWPMPWmECqU=
 github.com/go-sourcemap/sourcemap v2.1.3+incompatible/go.mod h1:F8jJfvm2KbVjc5NqelyYJmf/v5J0dwNLS2mL4sNA1Jg=
+github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
+github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/pprof v0.0.0-20230207041349-798e818bf904 h1:4/hN5RUoecvl+RmJRE2YxKWtnnQls6rQjjW5oV7qg2U=
 github.com/google/pprof v0.0.0-20230207041349-798e818bf904/go.mod h1:uglQLonpP8qtYCYyzA+8c/9qtqgA3qsXGYqCPKARAFg=
-golang.org/x/mobile v0.0.0-20251209145715-2553ed8ce294 h1:Cr6kbEvA6nqvdHynE4CtVKlqpZB9dS1Jva/6IsHA19g=
-golang.org/x/mobile v0.0.0-20251209145715-2553ed8ce294/go.mod h1:RdZ+3sb4CVgpCFnzv+I4haEpwqFfsfzlLHs3L7ok+e0=
-golang.org/x/mod v0.31.0 h1:HaW9xtz0+kOcWKwli0ZXy79Ix+UW/vOfmWI5QVd2tgI=
-golang.org/x/mod v0.31.0/go.mod h1:43JraMp9cGx1Rx3AqioxrbrhNsLl2l/iNAvuBkrezpg=
+github.com/klauspost/compress v1.17.4 h1:Ej5ixsIri7BrIjBkRZLTo6ghwrEtHFk7ijlczPW4fZ4=
+github.com/klauspost/compress v1.17.4/go.mod h1:/dCuZOvVtNoHsyb+cuJD3itjs3NbnF6KH9zAO4BDxPM=
+github.com/refraction-networking/utls v1.8.2 h1:j4Q1gJj0xngdeH+Ox/qND11aEfhpgoEvV+S9iJ2IdQo=
+github.com/refraction-networking/utls v1.8.2/go.mod h1:jkSOEkLqn+S/jtpEHPOsVv/4V4EVnelwbMQl4vCWXAM=
+golang.org/x/crypto v0.47.0 h1:V6e3FRj+n4dbpw86FJ8Fv7XVOql7TEwpHapKoMJ/GO8=
+golang.org/x/crypto v0.47.0/go.mod h1:ff3Y9VzzKbwSSEzWqJsJVBnWmRwRSHt/6Op5n9bQc4A=
+golang.org/x/mobile v0.0.0-20260120165949-40bd9ace6ce4 h1:C3JuLOLhdaE75vk5m7u18NvZciRk+lnO34xcXl3NPTU=
+golang.org/x/mobile v0.0.0-20260120165949-40bd9ace6ce4/go.mod h1:yHJY0EGzMJ0i5ONrrhdpDSSnoyres5LO7D2hSIbJJ5I=
+golang.org/x/mod v0.32.0 h1:9F4d3PHLljb6x//jOyokMv3eX+YDeepZSEo3mFJy93c=
+golang.org/x/mod v0.32.0/go.mod h1:SgipZ/3h2Ci89DlEtEXWUk/HteuRin+HHhN+WbNhguU=
+golang.org/x/net v0.49.0 h1:eeHFmOGUTtaaPSGNmjBKpbng9MulQsJURQUAfUwY++o=
+golang.org/x/net v0.49.0/go.mod h1:/ysNB2EvaqvesRkuLAyjI1ycPZlQHM3q01F02UY/MV8=
 golang.org/x/sync v0.19.0 h1:vV+1eWNmZ5geRlYjzm2adRgW2/mcpevXNg50YZtPCE4=
 golang.org/x/sync v0.19.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
-golang.org/x/text v0.3.8 h1:nAL+RVCQ9uMn3vJZbV+MRnydTJFPf8qqY42YiA6MrqY=
-golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
-golang.org/x/tools v0.40.0 h1:yLkxfA+Qnul4cs9QA3KnlFu0lVmd8JJfoq+E41uSutA=
-golang.org/x/tools v0.40.0/go.mod h1:Ik/tzLRlbscWpqqMRjyWYDisX8bG13FrdXp3o4Sr9lc=
+golang.org/x/sys v0.40.0 h1:DBZZqJ2Rkml6QMQsZywtnjnnGvHza6BTfYFWY9kjEWQ=
+golang.org/x/sys v0.40.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/text v0.33.0 h1:B3njUFyqtHDUI5jMn1YIr5B0IE2U0qck04r6d4KPAxE=
+golang.org/x/text v0.33.0/go.mod h1:LuMebE6+rBincTi9+xWTY8TztLzKHc/9C1uBCG27+q8=
+golang.org/x/tools v0.41.0 h1:a9b8iMweWG+S0OBnlU36rzLp20z1Rp10w+IY2czHTQc=
+golang.org/x/tools v0.41.0/go.mod h1:XSY6eDqxVNiYgezAVqqCeihT4j1U2CCsqvH3WhQpnlg=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=

go_backend/httputil.go

@@ -15,11 +15,7 @@ import (
 	"time"
 )
 
-// getRandomUserAgent generates a random Windows Chrome User-Agent string
-// Uses modern Chrome format with build and patch numbers
-// Windows 11 still reports as "Windows NT 10.0" for compatibility
 func getRandomUserAgent() string {
-	// Chrome version 120-145 (modern range)
 	chromeVersion := rand.Intn(26) + 120
 	chromeBuild := rand.Intn(1500) + 6000
 	chromePatch := rand.Intn(200) + 100
@@ -38,9 +34,9 @@ const (
 	SongLinkTimeout   = 30 * time.Second
 	DefaultMaxRetries = 3
 	DefaultRetryDelay = 1 * time.Second
+	Second            = time.Second
 )
 
-// Shared transport with connection pooling to prevent TCP exhaustion
 var sharedTransport = &http.Transport{
 	DialContext: (&net.Dialer{
 		Timeout:   30 * time.Second,
@@ -84,7 +80,6 @@ func GetDownloadClient() *http.Client {
 	return downloadClient
 }
 
-// CloseIdleConnections closes idle connections in the shared transport
 func CloseIdleConnections() {
 	sharedTransport.CloseIdleConnections()
 }
@@ -116,16 +111,12 @@ func DefaultRetryConfig() RetryConfig {
 	}
 }
 
-// DoRequestWithRetry executes an HTTP request with retry logic and exponential backoff
-// Handles 429 (Too Many Requests) responses with Retry-After header
-// Also detects and logs ISP blocking
 func DoRequestWithRetry(client *http.Client, req *http.Request, config RetryConfig) (*http.Response, error) {
 	var lastErr error
 	delay := config.InitialDelay
 	requestURL := req.URL.String()
 
 	for attempt := 0; attempt <= config.MaxRetries; attempt++ {
-		// Clone request for retry (body needs to be re-readable)
 		reqCopy := req.Clone(req.Context())
 		reqCopy.Header.Set("User-Agent", getRandomUserAgent())
 
@@ -133,9 +124,7 @@ func DoRequestWithRetry(client *http.Client, req *http.Request, config RetryConf
 		if err != nil {
 			lastErr = err
 
-			// Check for ISP blocking on network errors
 			if CheckAndLogISPBlocking(err, requestURL, "HTTP") {
-				// Don't retry if ISP blocking is detected - it won't help
 				return nil, WrapErrorWithISPCheck(err, requestURL, "HTTP")
 			}
 
@@ -148,12 +137,10 @@ func DoRequestWithRetry(client *http.Client, req *http.Request, config RetryConf
 			continue
 		}
 
-		// Success
 		if resp.StatusCode >= 200 && resp.StatusCode < 300 {
 			return resp, nil
 		}
 
-		// Handle rate limiting (429)
 		if resp.StatusCode == 429 {
 			resp.Body.Close()
 			retryAfter := getRetryAfterDuration(resp)
@@ -193,7 +180,6 @@ func DoRequestWithRetry(client *http.Client, req *http.Request, config RetryConf
 			}
 		}
 
-		// Server errors (5xx) - retry
 		if resp.StatusCode >= 500 {
 			resp.Body.Close()
 			lastErr = fmt.Errorf("server error: HTTP %d", resp.StatusCode)
@@ -205,7 +191,6 @@ func DoRequestWithRetry(client *http.Client, req *http.Request, config RetryConf
 			continue
 		}
 
-		// Client errors (4xx except 429) - don't retry
 		return resp, nil
 	}
 
@@ -224,12 +209,10 @@ func getRetryAfterDuration(resp *http.Response) time.Duration {
 		return 60 * time.Second // Default wait time
 	}
 
-	// Try parsing as seconds
 	if seconds, err := strconv.Atoi(retryAfter); err == nil {
 		return time.Duration(seconds) * time.Second
 	}
 
-	// Try parsing as HTTP date
 	if t, err := http.ParseTime(retryAfter); err == nil {
 		duration := time.Until(t)
 		if duration > 0 {
@@ -240,8 +223,6 @@ func getRetryAfterDuration(resp *http.Response) time.Duration {
 	return 60 * time.Second // Default
 }
 
-// ReadResponseBody reads and returns the response body
-// Returns error if body is empty
 func ReadResponseBody(resp *http.Response) ([]byte, error) {
 	if resp == nil {
 		return nil, fmt.Errorf("response is nil")
@@ -271,14 +252,12 @@ func ValidateResponse(resp *http.Response) error {
 	return nil
 }
 
-// BuildErrorMessage creates a detailed error message for API failures
 func BuildErrorMessage(apiURL string, statusCode int, responsePreview string) string {
 	msg := fmt.Sprintf("API %s failed", apiURL)
 	if statusCode > 0 {
 		msg += fmt.Sprintf(" (HTTP %d)", statusCode)
 	}
 	if responsePreview != "" {
-		// Truncate preview if too long
 		if len(responsePreview) > 100 {
 			responsePreview = responsePreview[:100] + "..."
 		}
@@ -297,18 +276,14 @@ func (e *ISPBlockingError) Error() string {
 	return fmt.Sprintf("ISP blocking detected for %s: %s", e.Domain, e.Reason)
 }
 
-// IsISPBlocking checks if an error is likely caused by ISP blocking
-// Returns the ISPBlockingError if detected, nil otherwise
 func IsISPBlocking(err error, requestURL string) *ISPBlockingError {
 	if err == nil {
 		return nil
 	}
 
-	// Extract domain from URL
 	domain := extractDomain(requestURL)
 	errStr := strings.ToLower(err.Error())
 
-	// Check for DNS resolution failure (common ISP blocking method)
 	var dnsErr *net.DNSError
 	if errors.As(err, &dnsErr) {
 		if dnsErr.IsNotFound || dnsErr.IsTemporary {
@@ -320,11 +295,9 @@ func IsISPBlocking(err error, requestURL string) *ISPBlockingError {
 		}
 	}
 
-	// Check for connection refused (ISP firewall blocking)
 	var opErr *net.OpError
 	if errors.As(err, &opErr) {
 		if opErr.Op == "dial" {
-			// Check for specific syscall errors
 			var syscallErr syscall.Errno
 			if errors.As(opErr.Err, &syscallErr) {
 				switch syscallErr {
@@ -363,7 +336,6 @@ func IsISPBlocking(err error, requestURL string) *ISPBlockingError {
 		}
 	}
 
-	// Check for TLS handshake failure (ISP MITM or blocking HTTPS)
 	var tlsErr *tls.RecordHeaderError
 	if errors.As(err, &tlsErr) {
 		return &ISPBlockingError{
@@ -424,7 +396,6 @@ func extractDomain(rawURL string) string {
 
 	parsed, err := url.Parse(rawURL)
 	if err != nil {
-		// Try to extract domain manually
 		rawURL = strings.TrimPrefix(rawURL, "https://")
 		rawURL = strings.TrimPrefix(rawURL, "http://")
 		if idx := strings.Index(rawURL, "/"); idx > 0 {

go_backend/httputil_ios.go

@@ -0,0 +1,27 @@
+//go:build ios
+
+package gobackend
+
+import (
+	"net/http"
+)
+
+// iOS version: uTLS is not supported on iOS due to cgo DNS resolver issues
+// Fall back to standard HTTP client
+
+// GetCloudflareBypassClient returns the standard HTTP client on iOS
+// uTLS is not available on iOS due to cgo DNS resolver compatibility issues
+func GetCloudflareBypassClient() *http.Client {
+	return sharedClient
+}
+
+// DoRequestWithCloudflareBypass on iOS just uses the standard client
+// uTLS Chrome fingerprint bypass is not available on iOS
+func DoRequestWithCloudflareBypass(req *http.Request) (*http.Response, error) {
+	req.Header.Set("User-Agent", getRandomUserAgent())
+	resp, err := sharedClient.Do(req)
+	if err != nil {
+		CheckAndLogISPBlocking(err, req.URL.String(), "HTTP")
+	}
+	return resp, err
+}

go_backend/httputil_utls.go

@@ -0,0 +1,181 @@
+//go:build !ios
+
+package gobackend
+
+import (
+	"context"
+	"crypto/tls"
+	"io"
+	"net"
+	"net/http"
+	"net/url"
+	"strings"
+	"sync"
+
+	utls "github.com/refraction-networking/utls"
+	"golang.org/x/net/http2"
+)
+
+// uTLS transport that mimics Chrome's TLS fingerprint to bypass Cloudflare
+// Uses HTTP/2 for optimal performance as uTLS works best with HTTP/2
+type utlsTransport struct {
+	dialer       *net.Dialer
+	mu           sync.Mutex
+	h2Transports map[string]*http2.Transport
+}
+
+func newUTLSTransport() *utlsTransport {
+	return &utlsTransport{
+		dialer: &net.Dialer{
+			Timeout:   30 * Second,
+			KeepAlive: 30 * Second,
+		},
+		h2Transports: make(map[string]*http2.Transport),
+	}
+}
+
+func (t *utlsTransport) RoundTrip(req *http.Request) (*http.Response, error) {
+	if req.URL.Scheme != "https" {
+		return sharedTransport.RoundTrip(req)
+	}
+
+	host := req.URL.Hostname()
+	port := t.getPort(req.URL)
+	addr := net.JoinHostPort(host, port)
+
+	conn, err := t.dialer.DialContext(req.Context(), "tcp", addr)
+	if err != nil {
+		return nil, err
+	}
+
+	tlsConn := utls.UClient(conn, &utls.Config{
+		ServerName: host,
+		NextProtos: []string{"h2", "http/1.1"},
+	}, utls.HelloChrome_Auto)
+
+	if err := tlsConn.Handshake(); err != nil {
+		conn.Close()
+		return nil, err
+	}
+
+	negotiatedProto := tlsConn.ConnectionState().NegotiatedProtocol
+
+	if negotiatedProto == "h2" {
+		h2Transport := &http2.Transport{
+			DialTLSContext: func(ctx context.Context, network, addr string, cfg *tls.Config) (net.Conn, error) {
+				return tlsConn, nil
+			},
+			AllowHTTP:          false,
+			DisableCompression: false,
+		}
+		return h2Transport.RoundTrip(req)
+	}
+
+	transport := &http.Transport{
+		DialTLSContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
+			return tlsConn, nil
+		},
+		DisableKeepAlives: true,
+	}
+
+	return transport.RoundTrip(req)
+}
+
+func (t *utlsTransport) getPort(u *url.URL) string {
+	if u.Port() != "" {
+		return u.Port()
+	}
+	if u.Scheme == "https" {
+		return "443"
+	}
+	return "80"
+}
+
+// Cloudflare bypass client using uTLS Chrome fingerprint
+var cloudflareBypassTransport = newUTLSTransport()
+
+var cloudflareBypassClient = &http.Client{
+	Transport: cloudflareBypassTransport,
+	Timeout:   DefaultTimeout,
+}
+
+// GetCloudflareBypassClient returns an HTTP client that mimics Chrome's TLS fingerprint
+// Use this when requests are blocked by Cloudflare (common when using VPN)
+func GetCloudflareBypassClient() *http.Client {
+	return cloudflareBypassClient
+}
+
+// DoRequestWithCloudflareBypass attempts request with standard client first,
+// then retries with uTLS Chrome fingerprint if Cloudflare blocks it.
+// This is useful when using VPN as Cloudflare detects Go's default TLS fingerprint.
+func DoRequestWithCloudflareBypass(req *http.Request) (*http.Response, error) {
+	req.Header.Set("User-Agent", getRandomUserAgent())
+
+	// Try with standard client first
+	resp, err := sharedClient.Do(req)
+	if err == nil {
+		// Check for Cloudflare challenge page (403 with specific markers)
+		if resp.StatusCode == 403 || resp.StatusCode == 503 {
+			body, readErr := io.ReadAll(resp.Body)
+			resp.Body.Close()
+
+			if readErr == nil {
+				bodyStr := strings.ToLower(string(body))
+				cloudflareMarkers := []string{
+					"cloudflare", "cf-ray", "checking your browser",
+					"please wait", "ddos protection", "ray id",
+					"enable javascript", "challenge-platform",
+				}
+
+				isCloudflare := false
+				for _, marker := range cloudflareMarkers {
+					if strings.Contains(bodyStr, marker) {
+						isCloudflare = true
+						break
+					}
+				}
+
+				if isCloudflare {
+					LogDebug("HTTP", "Cloudflare detected, retrying with Chrome TLS fingerprint...")
+
+					// Clone request for retry
+					reqCopy := req.Clone(req.Context())
+					reqCopy.Header.Set("User-Agent", getRandomUserAgent())
+
+					// Retry with uTLS Chrome fingerprint
+					return cloudflareBypassClient.Do(reqCopy)
+				}
+			}
+
+			// Not Cloudflare, return original response (recreate body)
+			return &http.Response{
+				Status:     resp.Status,
+				StatusCode: resp.StatusCode,
+				Header:     resp.Header,
+				Body:       io.NopCloser(strings.NewReader(string(body))),
+			}, nil
+		}
+		return resp, nil
+	}
+
+	// Check if error might be TLS-related (Cloudflare blocking)
+	errStr := strings.ToLower(err.Error())
+	tlsRelated := strings.Contains(errStr, "tls") ||
+		strings.Contains(errStr, "handshake") ||
+		strings.Contains(errStr, "certificate") ||
+		strings.Contains(errStr, "connection reset")
+
+	if tlsRelated {
+		LogDebug("HTTP", "TLS error detected, retrying with Chrome TLS fingerprint: %v", err)
+
+		// Clone request for retry
+		reqCopy := req.Clone(req.Context())
+		reqCopy.Header.Set("User-Agent", getRandomUserAgent())
+
+		// Retry with uTLS Chrome fingerprint
+		return cloudflareBypassClient.Do(reqCopy)
+	}
+
+	CheckAndLogISPBlocking(err, req.URL.String(), "HTTP")
+	return nil, err
+}

go_backend/idhs.go

@@ -0,0 +1,189 @@
+package gobackend
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strings"
+	"sync"
+	"time"
+)
+
+// IDHSClient is a client for I Don't Have Spotify API
+// Used as fallback when SongLink fails or is rate limited
+type IDHSClient struct {
+	client *http.Client
+}
+
+var (
+	globalIDHSClient *IDHSClient
+	idhsClientOnce   sync.Once
+	idhsRateLimiter  = NewRateLimiter(8, time.Minute) // 8 req/min (below 10 limit)
+)
+
+// IDHSSearchRequest represents the request body for IDHS API
+type IDHSSearchRequest struct {
+	Link     string   `json:"link"`
+	Adapters []string `json:"adapters,omitempty"`
+}
+
+// IDHSSearchResponse represents the response from IDHS API
+type IDHSSearchResponse struct {
+	ID            string     `json:"id"`
+	Type          string     `json:"type"` // song, album, artist, podcast, show
+	Title         string     `json:"title"`
+	Description   string     `json:"description"`
+	Image         string     `json:"image,omitempty"`
+	Audio         string     `json:"audio,omitempty"`
+	Source        string     `json:"source"`
+	UniversalLink string     `json:"universalLink"`
+	Links         []IDHSLink `json:"links"`
+}
+
+// IDHSLink represents a link to a streaming platform
+type IDHSLink struct {
+	Type         string `json:"type"` // spotify, youTube, appleMusic, deezer, soundCloud, tidal
+	URL          string `json:"url"`
+	IsVerified   bool   `json:"isVerified,omitempty"`
+	NotAvailable bool   `json:"notAvailable,omitempty"`
+}
+
+// NewIDHSClient creates a new IDHS client
+func NewIDHSClient() *IDHSClient {
+	idhsClientOnce.Do(func() {
+		globalIDHSClient = &IDHSClient{
+			client: NewHTTPClientWithTimeout(15 * time.Second),
+		}
+	})
+	return globalIDHSClient
+}
+
+// Search converts a music link to links on other platforms
+func (c *IDHSClient) Search(link string, adapters []string) (*IDHSSearchResponse, error) {
+	idhsRateLimiter.WaitForSlot()
+
+	reqBody := IDHSSearchRequest{
+		Link:     link,
+		Adapters: adapters,
+	}
+
+	jsonBody, err := json.Marshal(reqBody)
+	if err != nil {
+		return nil, fmt.Errorf("failed to marshal request: %w", err)
+	}
+
+	req, err := http.NewRequest("POST", "https://idonthavespotify.sjdonado.com/api/search?v=1", bytes.NewBuffer(jsonBody))
+	if err != nil {
+		return nil, fmt.Errorf("failed to create request: %w", err)
+	}
+
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("User-Agent", getRandomUserAgent())
+
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("request failed: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == 400 {
+		return nil, fmt.Errorf("invalid link or missing parameters")
+	}
+	if resp.StatusCode == 429 {
+		return nil, fmt.Errorf("IDHS rate limit exceeded")
+	}
+	if resp.StatusCode == 500 {
+		return nil, fmt.Errorf("IDHS processing failed")
+	}
+	if resp.StatusCode != 200 {
+		return nil, fmt.Errorf("IDHS API returned status %d", resp.StatusCode)
+	}
+
+	body, err := ReadResponseBody(resp)
+	if err != nil {
+		return nil, fmt.Errorf("failed to read response: %w", err)
+	}
+
+	var result IDHSSearchResponse
+	if err := json.Unmarshal(body, &result); err != nil {
+		return nil, fmt.Errorf("failed to decode response: %w", err)
+	}
+
+	return &result, nil
+}
+
+// GetAvailabilityFromSpotify checks track availability using IDHS as fallback
+func (c *IDHSClient) GetAvailabilityFromSpotify(spotifyTrackID string) (*TrackAvailability, error) {
+	spotifyURL := fmt.Sprintf("https://open.spotify.com/track/%s", spotifyTrackID)
+
+	// Request only the platforms we need
+	adapters := []string{"tidal", "deezer"}
+
+	result, err := c.Search(spotifyURL, adapters)
+	if err != nil {
+		return nil, err
+	}
+
+	availability := &TrackAvailability{
+		SpotifyID: spotifyTrackID,
+	}
+
+	for _, link := range result.Links {
+		if link.NotAvailable {
+			continue
+		}
+
+		switch strings.ToLower(link.Type) {
+		case "tidal":
+			availability.Tidal = true
+			availability.TidalURL = link.URL
+		case "deezer":
+			availability.Deezer = true
+			availability.DeezerURL = link.URL
+			availability.DeezerID = extractDeezerIDFromURL(link.URL)
+		}
+	}
+
+	LogDebug("IDHS", "Availability from Spotify %s: Tidal=%v, Deezer=%v",
+		spotifyTrackID, availability.Tidal, availability.Deezer)
+
+	return availability, nil
+}
+
+// GetAvailabilityFromDeezer checks track availability using IDHS
+func (c *IDHSClient) GetAvailabilityFromDeezer(deezerTrackID string) (*TrackAvailability, error) {
+	deezerURL := fmt.Sprintf("https://www.deezer.com/track/%s", deezerTrackID)
+
+	// Request only the platforms we need
+	adapters := []string{"spotify", "tidal"}
+
+	result, err := c.Search(deezerURL, adapters)
+	if err != nil {
+		return nil, err
+	}
+
+	availability := &TrackAvailability{
+		Deezer:   true,
+		DeezerID: deezerTrackID,
+	}
+
+	for _, link := range result.Links {
+		if link.NotAvailable {
+			continue
+		}
+
+		switch strings.ToLower(link.Type) {
+		case "spotify":
+			availability.SpotifyID = extractSpotifyIDFromURL(link.URL)
+		case "tidal":
+			availability.Tidal = true
+			availability.TidalURL = link.URL
+		}
+	}
+
+	LogDebug("IDHS", "Availability from Deezer %s: Spotify=%s, Tidal=%v",
+		deezerTrackID, availability.SpotifyID, availability.Tidal)
+
+	return availability, nil
+}

go_backend/library_scan.go

@@ -0,0 +1,415 @@
+package gobackend
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync"
+	"time"
+)
+
+// LibraryScanResult represents metadata from a scanned audio file
+type LibraryScanResult struct {
+	ID          string `json:"id"`
+	TrackName   string `json:"trackName"`
+	ArtistName  string `json:"artistName"`
+	AlbumName   string `json:"albumName"`
+	AlbumArtist string `json:"albumArtist,omitempty"`
+	FilePath    string `json:"filePath"`
+	CoverPath   string `json:"coverPath,omitempty"`
+	ScannedAt   string `json:"scannedAt"`
+	ISRC        string `json:"isrc,omitempty"`
+	TrackNumber int    `json:"trackNumber,omitempty"`
+	DiscNumber  int    `json:"discNumber,omitempty"`
+	Duration    int    `json:"duration,omitempty"`
+	ReleaseDate string `json:"releaseDate,omitempty"`
+	BitDepth    int    `json:"bitDepth,omitempty"`
+	SampleRate  int    `json:"sampleRate,omitempty"`
+	Genre       string `json:"genre,omitempty"`
+	Format      string `json:"format,omitempty"`
+}
+
+type LibraryScanProgress struct {
+	TotalFiles   int     `json:"total_files"`
+	ScannedFiles int     `json:"scanned_files"`
+	CurrentFile  string  `json:"current_file"`
+	ErrorCount   int     `json:"error_count"`
+	ProgressPct  float64 `json:"progress_pct"`
+	IsComplete   bool    `json:"is_complete"`
+}
+
+var (
+	libraryScanProgress   LibraryScanProgress
+	libraryScanProgressMu sync.RWMutex
+	libraryScanCancel     chan struct{}
+	libraryScanCancelMu   sync.Mutex
+	libraryCoverCacheDir  string
+	libraryCoverCacheMu   sync.RWMutex
+)
+
+var supportedAudioFormats = map[string]bool{
+	".flac": true,
+	".m4a":  true,
+	".mp3":  true,
+	".opus": true,
+	".ogg":  true,
+}
+
+func SetLibraryCoverCacheDir(cacheDir string) {
+	libraryCoverCacheMu.Lock()
+	libraryCoverCacheDir = cacheDir
+	libraryCoverCacheMu.Unlock()
+}
+
+func ScanLibraryFolder(folderPath string) (string, error) {
+	if folderPath == "" {
+		return "[]", fmt.Errorf("folder path is empty")
+	}
+
+	info, err := os.Stat(folderPath)
+	if err != nil {
+		return "[]", fmt.Errorf("folder not found: %w", err)
+	}
+	if !info.IsDir() {
+		return "[]", fmt.Errorf("path is not a folder: %s", folderPath)
+	}
+
+	libraryScanProgressMu.Lock()
+	libraryScanProgress = LibraryScanProgress{}
+	libraryScanProgressMu.Unlock()
+
+	libraryScanCancelMu.Lock()
+	if libraryScanCancel != nil {
+		close(libraryScanCancel)
+	}
+	libraryScanCancel = make(chan struct{})
+	cancelCh := libraryScanCancel
+	libraryScanCancelMu.Unlock()
+
+	var audioFiles []string
+	err = filepath.Walk(folderPath, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return nil
+		}
+
+		select {
+		case <-cancelCh:
+			return fmt.Errorf("scan cancelled")
+		default:
+		}
+
+		if !info.IsDir() {
+			ext := strings.ToLower(filepath.Ext(path))
+			if supportedAudioFormats[ext] {
+				audioFiles = append(audioFiles, path)
+			}
+		}
+		return nil
+	})
+
+	if err != nil {
+		return "[]", err
+	}
+
+	totalFiles := len(audioFiles)
+	libraryScanProgressMu.Lock()
+	libraryScanProgress.TotalFiles = totalFiles
+	libraryScanProgressMu.Unlock()
+
+	if totalFiles == 0 {
+		libraryScanProgressMu.Lock()
+		libraryScanProgress.IsComplete = true
+		libraryScanProgressMu.Unlock()
+		return "[]", nil
+	}
+
+	GoLog("[LibraryScan] Found %d audio files to scan\n", totalFiles)
+
+	results := make([]LibraryScanResult, 0, totalFiles)
+	scanTime := time.Now().UTC().Format(time.RFC3339)
+	errorCount := 0
+
+	for i, filePath := range audioFiles {
+		select {
+		case <-cancelCh:
+			return "[]", fmt.Errorf("scan cancelled")
+		default:
+		}
+
+		libraryScanProgressMu.Lock()
+		libraryScanProgress.ScannedFiles = i + 1
+		libraryScanProgress.CurrentFile = filepath.Base(filePath)
+		libraryScanProgress.ProgressPct = float64(i+1) / float64(totalFiles) * 100
+		libraryScanProgressMu.Unlock()
+
+		result, err := scanAudioFile(filePath, scanTime)
+		if err != nil {
+			errorCount++
+			GoLog("[LibraryScan] Error scanning %s: %v\n", filePath, err)
+			continue
+		}
+
+		results = append(results, *result)
+	}
+
+	libraryScanProgressMu.Lock()
+	libraryScanProgress.ErrorCount = errorCount
+	libraryScanProgress.IsComplete = true
+	libraryScanProgressMu.Unlock()
+
+	GoLog("[LibraryScan] Scan complete: %d tracks found, %d errors\n", len(results), errorCount)
+
+	jsonBytes, err := json.Marshal(results)
+	if err != nil {
+		return "[]", fmt.Errorf("failed to marshal results: %w", err)
+	}
+
+	return string(jsonBytes), nil
+}
+
+func scanAudioFile(filePath, scanTime string) (*LibraryScanResult, error) {
+	ext := strings.ToLower(filepath.Ext(filePath))
+
+	result := &LibraryScanResult{
+		ID:        generateLibraryID(filePath),
+		FilePath:  filePath,
+		ScannedAt: scanTime,
+		Format:    strings.TrimPrefix(ext, "."),
+	}
+
+	libraryCoverCacheMu.RLock()
+	coverCacheDir := libraryCoverCacheDir
+	libraryCoverCacheMu.RUnlock()
+	if coverCacheDir != "" && ext != ".m4a" {
+		coverPath, err := SaveCoverToCache(filePath, coverCacheDir)
+		if err == nil && coverPath != "" {
+			result.CoverPath = coverPath
+		}
+	}
+
+	switch ext {
+	case ".flac":
+		return scanFLACFile(filePath, result)
+	case ".m4a":
+		return scanM4AFile(filePath, result)
+	case ".mp3":
+		return scanMP3File(filePath, result)
+	case ".opus", ".ogg":
+		return scanOggFile(filePath, result)
+	default:
+		return scanFromFilename(filePath, result)
+	}
+}
+
+func scanFLACFile(filePath string, result *LibraryScanResult) (*LibraryScanResult, error) {
+	metadata, err := ReadMetadata(filePath)
+	if err != nil {
+		return scanFromFilename(filePath, result)
+	}
+
+	result.TrackName = metadata.Title
+	result.ArtistName = metadata.Artist
+	result.AlbumName = metadata.Album
+	result.AlbumArtist = metadata.AlbumArtist
+	result.ISRC = metadata.ISRC
+	result.TrackNumber = metadata.TrackNumber
+	result.DiscNumber = metadata.DiscNumber
+	result.ReleaseDate = metadata.Date
+	result.Genre = metadata.Genre
+
+	quality, err := GetAudioQuality(filePath)
+	if err == nil {
+		result.BitDepth = quality.BitDepth
+		result.SampleRate = quality.SampleRate
+		if quality.SampleRate > 0 && quality.TotalSamples > 0 {
+			result.Duration = int(quality.TotalSamples / int64(quality.SampleRate))
+		}
+	}
+
+	if result.TrackName == "" {
+		result.TrackName = strings.TrimSuffix(filepath.Base(filePath), filepath.Ext(filePath))
+	}
+	if result.ArtistName == "" {
+		result.ArtistName = "Unknown Artist"
+	}
+	if result.AlbumName == "" {
+		result.AlbumName = "Unknown Album"
+	}
+
+	return result, nil
+}
+
+func scanM4AFile(filePath string, result *LibraryScanResult) (*LibraryScanResult, error) {
+	quality, err := GetM4AQuality(filePath)
+	if err == nil {
+		result.BitDepth = quality.BitDepth
+		result.SampleRate = quality.SampleRate
+	}
+
+	return scanFromFilename(filePath, result)
+}
+
+func scanMP3File(filePath string, result *LibraryScanResult) (*LibraryScanResult, error) {
+	metadata, err := ReadID3Tags(filePath)
+	if err != nil {
+		GoLog("[LibraryScan] ID3 read error for %s: %v\n", filePath, err)
+		return scanFromFilename(filePath, result)
+	}
+
+	result.TrackName = metadata.Title
+	result.ArtistName = metadata.Artist
+	result.AlbumName = metadata.Album
+	result.AlbumArtist = metadata.AlbumArtist
+	result.TrackNumber = metadata.TrackNumber
+	result.DiscNumber = metadata.DiscNumber
+	result.Genre = metadata.Genre
+	if metadata.Date != "" {
+		result.ReleaseDate = metadata.Date
+	} else {
+		result.ReleaseDate = metadata.Year
+	}
+	result.ISRC = metadata.ISRC
+
+	quality, err := GetMP3Quality(filePath)
+	if err == nil {
+		result.SampleRate = quality.SampleRate
+		result.BitDepth = quality.BitDepth
+		result.Duration = quality.Duration
+	}
+
+	if result.TrackName == "" {
+		result.TrackName = strings.TrimSuffix(filepath.Base(filePath), filepath.Ext(filePath))
+	}
+	if result.ArtistName == "" {
+		result.ArtistName = "Unknown Artist"
+	}
+	if result.AlbumName == "" {
+		result.AlbumName = "Unknown Album"
+	}
+
+	return result, nil
+}
+
+func scanOggFile(filePath string, result *LibraryScanResult) (*LibraryScanResult, error) {
+	metadata, err := ReadOggVorbisComments(filePath)
+	if err != nil {
+		GoLog("[LibraryScan] Ogg/Opus read error for %s: %v\n", filePath, err)
+		return scanFromFilename(filePath, result)
+	}
+
+	result.TrackName = metadata.Title
+	result.ArtistName = metadata.Artist
+	result.AlbumName = metadata.Album
+	result.AlbumArtist = metadata.AlbumArtist
+	result.ISRC = metadata.ISRC
+	result.TrackNumber = metadata.TrackNumber
+	result.DiscNumber = metadata.DiscNumber
+	result.Genre = metadata.Genre
+	result.ReleaseDate = metadata.Date
+
+	quality, err := GetOggQuality(filePath)
+	if err == nil {
+		result.SampleRate = quality.SampleRate
+		result.BitDepth = quality.BitDepth
+		result.Duration = quality.Duration
+	}
+
+	if result.TrackName == "" {
+		result.TrackName = strings.TrimSuffix(filepath.Base(filePath), filepath.Ext(filePath))
+	}
+	if result.ArtistName == "" {
+		result.ArtistName = "Unknown Artist"
+	}
+	if result.AlbumName == "" {
+		result.AlbumName = "Unknown Album"
+	}
+
+	return result, nil
+}
+
+func scanFromFilename(filePath string, result *LibraryScanResult) (*LibraryScanResult, error) {
+	filename := strings.TrimSuffix(filepath.Base(filePath), filepath.Ext(filePath))
+
+	parts := strings.SplitN(filename, " - ", 2)
+	if len(parts) == 2 {
+		if len(parts[0]) <= 3 && isNumeric(parts[0]) {
+			result.TrackName = parts[1]
+			result.ArtistName = "Unknown Artist"
+		} else {
+			result.ArtistName = parts[0]
+			result.TrackName = parts[1]
+		}
+	} else {
+		if len(filename) > 3 && isNumeric(filename[:2]) {
+			title := strings.TrimLeft(filename[2:], " .-")
+			result.TrackName = title
+		} else {
+			result.TrackName = filename
+		}
+		result.ArtistName = "Unknown Artist"
+	}
+
+	dir := filepath.Dir(filePath)
+	result.AlbumName = filepath.Base(dir)
+	if result.AlbumName == "." || result.AlbumName == "" {
+		result.AlbumName = "Unknown Album"
+	}
+
+	return result, nil
+}
+
+func isNumeric(s string) bool {
+	for _, c := range s {
+		if c < '0' || c > '9' {
+			return false
+		}
+	}
+	return len(s) > 0
+}
+
+func generateLibraryID(filePath string) string {
+	return fmt.Sprintf("lib_%x", hashString(filePath))
+}
+
+func hashString(s string) uint32 {
+	var hash uint32 = 5381
+	for _, c := range s {
+		hash = ((hash << 5) + hash) + uint32(c)
+	}
+	return hash
+}
+
+func GetLibraryScanProgress() string {
+	libraryScanProgressMu.RLock()
+	defer libraryScanProgressMu.RUnlock()
+
+	jsonBytes, _ := json.Marshal(libraryScanProgress)
+	return string(jsonBytes)
+}
+
+func CancelLibraryScan() {
+	libraryScanCancelMu.Lock()
+	defer libraryScanCancelMu.Unlock()
+
+	if libraryScanCancel != nil {
+		close(libraryScanCancel)
+		libraryScanCancel = nil
+	}
+}
+
+func ReadAudioMetadata(filePath string) (string, error) {
+	scanTime := time.Now().UTC().Format(time.RFC3339)
+	result, err := scanAudioFile(filePath, scanTime)
+	if err != nil {
+		return "", err
+	}
+
+	jsonBytes, err := json.Marshal(result)
+	if err != nil {
+		return "", fmt.Errorf("failed to marshal result: %w", err)
+	}
+
+	return string(jsonBytes), nil
+}

go_backend/logbuffer.go

@@ -27,7 +27,6 @@ var (
 	logBufferOnce   sync.Once
 )
 
-// GetLogBuffer returns the singleton log buffer instance
 func GetLogBuffer() *LogBuffer {
 	logBufferOnce.Do(func() {
 		globalLogBuffer = &LogBuffer{
@@ -45,7 +44,6 @@ func (lb *LogBuffer) SetLoggingEnabled(enabled bool) {
 	lb.loggingEnabled = enabled
 }
 
-// IsLoggingEnabled returns whether logging is enabled
 func (lb *LogBuffer) IsLoggingEnabled() bool {
 	lb.mu.RLock()
 	defer lb.mu.RUnlock()
@@ -75,7 +73,6 @@ func (lb *LogBuffer) Add(level, tag, message string) {
 	fmt.Printf("[%s] %s\n", tag, message)
 }
 
-// GetAll returns all log entries as JSON
 func (lb *LogBuffer) GetAll() string {
 	lb.mu.RLock()
 	defer lb.mu.RUnlock()
@@ -99,21 +96,18 @@ func (lb *LogBuffer) getSince(index int) ([]LogEntry, int) {
 	return entries, len(lb.entries)
 }
 
-// Clear clears all log entries
 func (lb *LogBuffer) Clear() {
 	lb.mu.Lock()
 	defer lb.mu.Unlock()
 	lb.entries = lb.entries[:0]
 }
 
-// Count returns the number of log entries
 func (lb *LogBuffer) Count() int {
 	lb.mu.RLock()
 	defer lb.mu.RUnlock()
 	return len(lb.entries)
 }
 
-// Helper functions for logging with different levels
 func LogDebug(tag, format string, args ...interface{}) {
 	GetLogBuffer().Add("DEBUG", tag, fmt.Sprintf(format, args...))
 }
@@ -150,11 +144,11 @@ func GoLog(format string, args ...interface{}) {
 
 	// Determine level from message content
 	msgLower := strings.ToLower(message)
-	if strings.Contains(msgLower, "error") || strings.Contains(msgLower, "failed") || strings.HasPrefix(message, "✗") {
+	if strings.Contains(msgLower, "error") || strings.Contains(msgLower, "failed") {
 		level = "ERROR"
 	} else if strings.Contains(msgLower, "warning") || strings.Contains(msgLower, "warn") {
 		level = "WARN"
-	} else if strings.HasPrefix(message, "✓") || strings.Contains(msgLower, "success") || strings.Contains(msgLower, "match found") {
+	} else if strings.Contains(msgLower, "success") || strings.Contains(msgLower, "match found") {
 		level = "INFO"
 	} else if strings.Contains(msgLower, "searching") || strings.Contains(msgLower, "trying") || strings.Contains(msgLower, "found") {
 		level = "DEBUG"
@@ -163,15 +157,10 @@ func GoLog(format string, args ...interface{}) {
 	GetLogBuffer().Add(level, tag, message)
 }
 
-// Exported functions for Flutter
-
-// GetLogs returns all logs as JSON array
 func GetLogs() string {
 	return GetLogBuffer().GetAll()
 }
 
-// GetLogsSince returns logs since the given index
-// Returns JSON: {"logs": [...], "next_index": N}
 func GetLogsSince(index int) string {
 	entries, nextIndex := GetLogBuffer().getSince(index)
 	logsJson, _ := json.Marshal(entries)
@@ -179,17 +168,14 @@ func GetLogsSince(index int) string {
 	return result
 }
 
-// ClearLogs clears all logs
 func ClearLogs() {
 	GetLogBuffer().Clear()
 }
 
-// GetLogCount returns the number of log entries
 func GetLogCount() int {
 	return GetLogBuffer().Count()
 }
 
-// SetLoggingEnabled enables or disables logging from Flutter
 func SetLoggingEnabled(enabled bool) {
 	GetLogBuffer().SetLoggingEnabled(enabled)
 }

go_backend/lyrics.go

@@ -238,9 +238,9 @@ func (c *LyricsClient) durationMatches(lrcDuration, targetDuration float64) bool
 	return diff <= durationToleranceSec
 }
 
-// durationSec: track duration in seconds for matching, use 0 to skip duration matching
 func (c *LyricsClient) FetchLyricsAllSources(spotifyID, trackName, artistName string, durationSec float64) (*LyricsResponse, error) {
-	// Check cache first
+	primaryArtist := normalizeArtistName(artistName)
+
 	if cached, found := globalLyricsCache.Get(artistName, trackName, durationSec); found {
 		fmt.Printf("[Lyrics] Cache hit for: %s - %s\n", artistName, trackName)
 		cachedCopy := *cached
@@ -251,39 +251,48 @@ func (c *LyricsClient) FetchLyricsAllSources(spotifyID, trackName, artistName st
 	var lyrics *LyricsResponse
 	var err error
 
-	// Try exact match first
-	lyrics, err = c.FetchLyricsWithMetadata(artistName, trackName)
-	if err == nil && lyrics != nil && len(lyrics.Lines) > 0 {
+	isValidResult := func(l *LyricsResponse) bool {
+		return l != nil && (len(l.Lines) > 0 || l.Instrumental)
+	}
+
+	lyrics, err = c.FetchLyricsWithMetadata(primaryArtist, trackName)
+	if err == nil && isValidResult(lyrics) {
 		lyrics.Source = "LRCLIB"
 		globalLyricsCache.Set(artistName, trackName, durationSec, lyrics)
 		return lyrics, nil
 	}
 
-	// Try with simplified track name
+	if primaryArtist != artistName {
+		lyrics, err = c.FetchLyricsWithMetadata(artistName, trackName)
+		if err == nil && isValidResult(lyrics) {
+			lyrics.Source = "LRCLIB"
+			globalLyricsCache.Set(artistName, trackName, durationSec, lyrics)
+			return lyrics, nil
+		}
+	}
+
 	simplifiedTrack := simplifyTrackName(trackName)
 	if simplifiedTrack != trackName {
-		lyrics, err = c.FetchLyricsWithMetadata(artistName, simplifiedTrack)
-		if err == nil && lyrics != nil && len(lyrics.Lines) > 0 {
+		lyrics, err = c.FetchLyricsWithMetadata(primaryArtist, simplifiedTrack)
+		if err == nil && isValidResult(lyrics) {
 			lyrics.Source = "LRCLIB (simplified)"
 			globalLyricsCache.Set(artistName, trackName, durationSec, lyrics)
 			return lyrics, nil
 		}
 	}
 
-	// Search with duration matching
-	query := artistName + " " + trackName
+	query := primaryArtist + " " + trackName
 	lyrics, err = c.FetchLyricsFromLRCLibSearch(query, durationSec)
-	if err == nil && lyrics != nil && len(lyrics.Lines) > 0 {
+	if err == nil && isValidResult(lyrics) {
 		lyrics.Source = "LRCLIB Search"
 		globalLyricsCache.Set(artistName, trackName, durationSec, lyrics)
 		return lyrics, nil
 	}
 
-	// Search with simplified name and duration matching
 	if simplifiedTrack != trackName {
-		query = artistName + " " + simplifiedTrack
+		query = primaryArtist + " " + simplifiedTrack
 		lyrics, err = c.FetchLyricsFromLRCLibSearch(query, durationSec)
-		if err == nil && lyrics != nil && len(lyrics.Lines) > 0 {
+		if err == nil && isValidResult(lyrics) {
 			lyrics.Source = "LRCLIB Search (simplified)"
 			globalLyricsCache.Set(artistName, trackName, durationSec, lyrics)
 			return lyrics, nil
@@ -375,32 +384,6 @@ func msToLRCTimestamp(ms int64) string {
 	return fmt.Sprintf("[%02d:%02d.%02d]", minutes, seconds, centiseconds)
 }
 
-// Use convertToLRCWithMetadata for full LRC with headers
-// Kept for potential future use
-// func convertToLRC(lyrics *LyricsResponse) string {
-// 	if lyrics == nil || len(lyrics.Lines) == 0 {
-// 		return ""
-// 	}
-//
-// 	var builder strings.Builder
-//
-// 	if lyrics.SyncType == "LINE_SYNCED" {
-// 		for _, line := range lyrics.Lines {
-// 			timestamp := msToLRCTimestamp(line.StartTimeMs)
-// 			builder.WriteString(timestamp)
-// 			builder.WriteString(line.Words)
-// 			builder.WriteString("\n")
-// 		}
-// 	} else {
-// 		for _, line := range lyrics.Lines {
-// 			builder.WriteString(line.Words)
-// 			builder.WriteString("\n")
-// 		}
-// 	}
-//
-// 	return builder.String()
-// }
-
 func convertToLRCWithMetadata(lyrics *LyricsResponse, trackName, artistName string) string {
 	if lyrics == nil || len(lyrics.Lines) == 0 {
 		return ""
@@ -462,6 +445,20 @@ func simplifyTrackName(name string) string {
 	return strings.TrimSpace(result)
 }
 
+func normalizeArtistName(name string) string {
+	separators := []string{", ", "; ", " & ", " feat. ", " ft. ", " featuring ", " with "}
+
+	result := name
+	for _, sep := range separators {
+		if idx := strings.Index(strings.ToLower(result), strings.ToLower(sep)); idx > 0 {
+			result = result[:idx]
+			break
+		}
+	}
+
+	return strings.TrimSpace(result)
+}
+
 func SaveLRCFile(audioFilePath, lrcContent string) (string, error) {
 	if lrcContent == "" {
 		return "", fmt.Errorf("empty LRC content")

go_backend/metadata.go

@@ -238,7 +238,6 @@ func EmbedMetadataWithCoverData(filePath string, metadata Metadata, coverData []
 	return f.Save(filePath)
 }
 
-// ReadMetadata reads metadata from a FLAC file
 func ReadMetadata(filePath string) (*Metadata, error) {
 	f, err := flac.ParseFile(filePath)
 	if err != nil {
@@ -336,6 +335,39 @@ func fileExists(path string) bool {
 	return err == nil
 }
 
+func ExtractCoverArt(filePath string) ([]byte, error) {
+	f, err := flac.ParseFile(filePath)
+	if err != nil {
+		return nil, fmt.Errorf("failed to parse FLAC file: %w", err)
+	}
+
+	for _, meta := range f.Meta {
+		if meta.Type == flac.Picture {
+			pic, err := flacpicture.ParseFromMetaDataBlock(*meta)
+			if err != nil {
+				continue
+			}
+			if pic.PictureType == flacpicture.PictureTypeFrontCover && len(pic.ImageData) > 0 {
+				return pic.ImageData, nil
+			}
+		}
+	}
+
+	for _, meta := range f.Meta {
+		if meta.Type == flac.Picture {
+			pic, err := flacpicture.ParseFromMetaDataBlock(*meta)
+			if err != nil {
+				continue
+			}
+			if len(pic.ImageData) > 0 {
+				return pic.ImageData, nil
+			}
+		}
+	}
+
+	return nil, fmt.Errorf("no cover art found in file")
+}
+
 func EmbedLyrics(filePath string, lyrics string) error {
 	f, err := flac.ParseFile(filePath)
 	if err != nil {
@@ -418,7 +450,6 @@ func EmbedGenreLabel(filePath string, genre, label string) error {
 	return f.Save(filePath)
 }
 
-// ExtractLyrics extracts embedded lyrics from a FLAC file
 func ExtractLyrics(filePath string) (string, error) {
 	f, err := flac.ParseFile(filePath)
 	if err != nil {
@@ -512,371 +543,6 @@ func GetAudioQuality(filePath string) (AudioQuality, error) {
 	return AudioQuality{}, fmt.Errorf("unsupported file format (not FLAC or M4A)")
 }
 
-// ========================================
-// M4A (MP4/AAC) Metadata Embedding
-// ========================================
-
-// EmbedM4AMetadata embeds metadata into an M4A file using iTunes-style atoms
-func EmbedM4AMetadata(filePath string, metadata Metadata, coverData []byte) error {
-	input, err := os.Open(filePath)
-	if err != nil {
-		return fmt.Errorf("failed to open M4A file: %w", err)
-	}
-	defer input.Close()
-
-	info, err := input.Stat()
-	if err != nil {
-		return fmt.Errorf("failed to stat M4A file: %w", err)
-	}
-	fileSize := info.Size()
-
-	moovHeader, moovFound, err := findAtomInRange(input, 0, fileSize, "moov", fileSize)
-	if err != nil {
-		return fmt.Errorf("failed to find moov atom: %w", err)
-	}
-	if !moovFound {
-		return fmt.Errorf("moov atom not found in M4A file")
-	}
-
-	moovContentStart := moovHeader.offset + moovHeader.headerSize
-	moovContentSize := moovHeader.size - moovHeader.headerSize
-
-	udtaHeader, udtaFound, err := findAtomInRange(input, moovContentStart, moovContentSize, "udta", fileSize)
-	if err != nil {
-		return fmt.Errorf("failed to locate udta atom: %w", err)
-	}
-
-	var metaHeader atomHeader
-	metaFound := false
-	if udtaFound {
-		udtaContentStart := udtaHeader.offset + udtaHeader.headerSize
-		udtaContentSize := udtaHeader.size - udtaHeader.headerSize
-		metaHeader, metaFound, err = findAtomInRange(input, udtaContentStart, udtaContentSize, "meta", fileSize)
-		if err != nil {
-			return fmt.Errorf("failed to locate meta atom: %w", err)
-		}
-	}
-
-	metaAtom := buildMetaAtom(metadata, coverData)
-	metaSize := int64(len(metaAtom))
-
-	var delta int64
-	var newUdtaSize int64
-	switch {
-	case udtaFound && metaFound:
-		delta = metaSize - metaHeader.size
-		newUdtaSize = udtaHeader.size + delta
-	case udtaFound && !metaFound:
-		delta = metaSize
-		newUdtaSize = udtaHeader.size + delta
-	case !udtaFound:
-		newUdtaSize = int64(8 + len(metaAtom))
-		delta = newUdtaSize
-	}
-
-	newMoovSize := moovHeader.size + delta
-	if moovHeader.headerSize == 8 && newMoovSize > int64(^uint32(0)) {
-		return fmt.Errorf("moov atom exceeds 32-bit size after update")
-	}
-	if udtaFound && udtaHeader.headerSize == 8 && newUdtaSize > int64(^uint32(0)) {
-		return fmt.Errorf("udta atom exceeds 32-bit size after update")
-	}
-	if !udtaFound && newUdtaSize > int64(^uint32(0)) {
-		return fmt.Errorf("udta atom exceeds 32-bit size after update")
-	}
-
-	tempPath := filePath + ".tmp"
-	output, err := os.OpenFile(tempPath, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, 0644)
-	if err != nil {
-		return fmt.Errorf("failed to create temp file: %w", err)
-	}
-	cleanupTemp := true
-	defer func() {
-		_ = output.Close()
-		if cleanupTemp {
-			_ = os.Remove(tempPath)
-		}
-	}()
-
-	switch {
-	case udtaFound && metaFound:
-		if err := copyRange(output, input, 0, moovHeader.offset); err != nil {
-			return err
-		}
-		if err := writeAtomHeader(output, "moov", newMoovSize, moovHeader.headerSize); err != nil {
-			return err
-		}
-		if err := copyRange(output, input, moovHeader.offset+moovHeader.headerSize, udtaHeader.offset-(moovHeader.offset+moovHeader.headerSize)); err != nil {
-			return err
-		}
-		if err := writeAtomHeader(output, "udta", newUdtaSize, udtaHeader.headerSize); err != nil {
-			return err
-		}
-		if err := copyRange(output, input, udtaHeader.offset+udtaHeader.headerSize, metaHeader.offset-(udtaHeader.offset+udtaHeader.headerSize)); err != nil {
-			return err
-		}
-		if _, err := output.Write(metaAtom); err != nil {
-			return fmt.Errorf("failed to write meta atom: %w", err)
-		}
-		metaEnd := metaHeader.offset + metaHeader.size
-		if err := copyRange(output, input, metaEnd, fileSize-metaEnd); err != nil {
-			return err
-		}
-	case udtaFound && !metaFound:
-		if err := copyRange(output, input, 0, moovHeader.offset); err != nil {
-			return err
-		}
-		if err := writeAtomHeader(output, "moov", newMoovSize, moovHeader.headerSize); err != nil {
-			return err
-		}
-		if err := copyRange(output, input, moovHeader.offset+moovHeader.headerSize, udtaHeader.offset-(moovHeader.offset+moovHeader.headerSize)); err != nil {
-			return err
-		}
-		if err := writeAtomHeader(output, "udta", newUdtaSize, udtaHeader.headerSize); err != nil {
-			return err
-		}
-		insertPos := udtaHeader.offset + udtaHeader.size
-		if err := copyRange(output, input, udtaHeader.offset+udtaHeader.headerSize, insertPos-(udtaHeader.offset+udtaHeader.headerSize)); err != nil {
-			return err
-		}
-		if _, err := output.Write(metaAtom); err != nil {
-			return fmt.Errorf("failed to write meta atom: %w", err)
-		}
-		if err := copyRange(output, input, insertPos, fileSize-insertPos); err != nil {
-			return err
-		}
-	case !udtaFound:
-		newUdtaAtom := buildUdtaAtom(metaAtom)
-		if err := copyRange(output, input, 0, moovHeader.offset); err != nil {
-			return err
-		}
-		if err := writeAtomHeader(output, "moov", newMoovSize, moovHeader.headerSize); err != nil {
-			return err
-		}
-		moovEnd := moovHeader.offset + moovHeader.size
-		if err := copyRange(output, input, moovHeader.offset+moovHeader.headerSize, moovEnd-(moovHeader.offset+moovHeader.headerSize)); err != nil {
-			return err
-		}
-		if _, err := output.Write(newUdtaAtom); err != nil {
-			return fmt.Errorf("failed to write udta atom: %w", err)
-		}
-		if err := copyRange(output, input, moovEnd, fileSize-moovEnd); err != nil {
-			return err
-		}
-	}
-
-	if err := output.Close(); err != nil {
-		return fmt.Errorf("failed to close temp file: %w", err)
-	}
-
-	_ = input.Close()
-	if err := os.Remove(filePath); err != nil {
-		return fmt.Errorf("failed to replace original file: %w", err)
-	}
-	if err := os.Rename(tempPath, filePath); err != nil {
-		return fmt.Errorf("failed to move temp file: %w", err)
-	}
-	cleanupTemp = false
-
-	fmt.Printf("[M4A] Metadata embedded successfully\n")
-	return nil
-}
-
-func findAtom(data []byte, name string, offset int) int {
-	for i := offset; i < len(data)-8; {
-		size := int(uint32(data[i])<<24 | uint32(data[i+1])<<16 | uint32(data[i+2])<<8 | uint32(data[i+3]))
-		if size < 8 {
-			break
-		}
-		atomName := string(data[i+4 : i+8])
-		if atomName == name {
-			return i
-		}
-		i += size
-	}
-	return -1
-}
-
-// buildMetaAtom builds a complete meta atom with ilst containing metadata
-func buildMetaAtom(metadata Metadata, coverData []byte) []byte {
-	var ilst []byte
-
-	if metadata.Title != "" {
-		ilst = append(ilst, buildTextAtom("©nam", metadata.Title)...)
-	}
-
-	if metadata.Artist != "" {
-		ilst = append(ilst, buildTextAtom("©ART", metadata.Artist)...)
-	}
-
-	if metadata.Album != "" {
-		ilst = append(ilst, buildTextAtom("©alb", metadata.Album)...)
-	}
-
-	if metadata.AlbumArtist != "" {
-		ilst = append(ilst, buildTextAtom("aART", metadata.AlbumArtist)...)
-	}
-
-	if metadata.Date != "" {
-		ilst = append(ilst, buildTextAtom("©day", metadata.Date)...)
-	}
-
-	if metadata.TrackNumber > 0 {
-		ilst = append(ilst, buildTrackNumberAtom(metadata.TrackNumber, metadata.TotalTracks)...)
-	}
-
-	if metadata.DiscNumber > 0 {
-		ilst = append(ilst, buildDiscNumberAtom(metadata.DiscNumber, 0)...)
-	}
-
-	if metadata.Lyrics != "" {
-		ilst = append(ilst, buildTextAtom("©lyr", metadata.Lyrics)...)
-	}
-
-	if len(coverData) > 0 {
-		ilst = append(ilst, buildCoverAtom(coverData)...)
-	}
-
-	ilstSize := 8 + len(ilst)
-	ilstAtom := make([]byte, 4)
-	ilstAtom[0] = byte(ilstSize >> 24)
-	ilstAtom[1] = byte(ilstSize >> 16)
-	ilstAtom[2] = byte(ilstSize >> 8)
-	ilstAtom[3] = byte(ilstSize)
-	ilstAtom = append(ilstAtom, []byte("ilst")...)
-	ilstAtom = append(ilstAtom, ilst...)
-
-	hdlr := []byte{
-		0, 0, 0, 33, // size = 33
-		'h', 'd', 'l', 'r',
-		0, 0, 0, 0, // version + flags
-		0, 0, 0, 0, // predefined
-		'm', 'd', 'i', 'r', // handler type
-		'a', 'p', 'p', 'l', // manufacturer
-		0, 0, 0, 0, // component flags
-		0, 0, 0, 0, // component flags mask
-		0, // null terminator
-	}
-
-	metaContent := append([]byte{0, 0, 0, 0}, hdlr...) // version + flags + hdlr
-	metaContent = append(metaContent, ilstAtom...)
-
-	metaSize := 8 + len(metaContent)
-	metaAtom := make([]byte, 4)
-	metaAtom[0] = byte(metaSize >> 24)
-	metaAtom[1] = byte(metaSize >> 16)
-	metaAtom[2] = byte(metaSize >> 8)
-	metaAtom[3] = byte(metaSize)
-	metaAtom = append(metaAtom, []byte("meta")...)
-	metaAtom = append(metaAtom, metaContent...)
-
-	return metaAtom
-}
-
-func buildTextAtom(name, value string) []byte {
-	valueBytes := []byte(value)
-
-	dataSize := 16 + len(valueBytes)
-	dataAtom := make([]byte, 4)
-	dataAtom[0] = byte(dataSize >> 24)
-	dataAtom[1] = byte(dataSize >> 16)
-	dataAtom[2] = byte(dataSize >> 8)
-	dataAtom[3] = byte(dataSize)
-	dataAtom = append(dataAtom, []byte("data")...)
-	dataAtom = append(dataAtom, 0, 0, 0, 1) // type = UTF-8
-	dataAtom = append(dataAtom, 0, 0, 0, 0) // locale
-	dataAtom = append(dataAtom, valueBytes...)
-
-	atomSize := 8 + len(dataAtom)
-	atom := make([]byte, 4)
-	atom[0] = byte(atomSize >> 24)
-	atom[1] = byte(atomSize >> 16)
-	atom[2] = byte(atomSize >> 8)
-	atom[3] = byte(atomSize)
-	atom = append(atom, []byte(name)...)
-	atom = append(atom, dataAtom...)
-
-	return atom
-}
-
-// buildTrackNumberAtom builds trkn atom
-func buildTrackNumberAtom(track, total int) []byte {
-	dataAtom := []byte{
-		0, 0, 0, 24, // size
-		'd', 'a', 't', 'a',
-		0, 0, 0, 0, // type = implicit
-		0, 0, 0, 0, // locale
-		0, 0, // padding
-		byte(track >> 8), byte(track), // track number
-		byte(total >> 8), byte(total), // total tracks
-		0, 0, // padding
-	}
-
-	atomSize := 8 + len(dataAtom)
-	atom := make([]byte, 4)
-	atom[0] = byte(atomSize >> 24)
-	atom[1] = byte(atomSize >> 16)
-	atom[2] = byte(atomSize >> 8)
-	atom[3] = byte(atomSize)
-	atom = append(atom, []byte("trkn")...)
-	atom = append(atom, dataAtom...)
-
-	return atom
-}
-
-func buildDiscNumberAtom(disc, total int) []byte {
-	dataAtom := []byte{
-		0, 0, 0, 22, // size
-		'd', 'a', 't', 'a',
-		0, 0, 0, 0, // type = implicit
-		0, 0, 0, 0, // locale
-		0, 0, // padding
-		byte(disc >> 8), byte(disc), // disc number
-		byte(total >> 8), byte(total), // total discs
-	}
-
-	atomSize := 8 + len(dataAtom)
-	atom := make([]byte, 4)
-	atom[0] = byte(atomSize >> 24)
-	atom[1] = byte(atomSize >> 16)
-	atom[2] = byte(atomSize >> 8)
-	atom[3] = byte(atomSize)
-	atom = append(atom, []byte("disk")...)
-	atom = append(atom, dataAtom...)
-
-	return atom
-}
-
-// buildCoverAtom builds covr atom with image data
-func buildCoverAtom(coverData []byte) []byte {
-	imageType := byte(13)
-	if len(coverData) > 8 && coverData[0] == 0x89 && coverData[1] == 'P' && coverData[2] == 'N' && coverData[3] == 'G' {
-		imageType = 14
-	}
-
-	dataSize := 16 + len(coverData)
-	dataAtom := make([]byte, 4)
-	dataAtom[0] = byte(dataSize >> 24)
-	dataAtom[1] = byte(dataSize >> 16)
-	dataAtom[2] = byte(dataSize >> 8)
-	dataAtom[3] = byte(dataSize)
-	dataAtom = append(dataAtom, []byte("data")...)
-	dataAtom = append(dataAtom, 0, 0, 0, imageType)
-	dataAtom = append(dataAtom, 0, 0, 0, 0)
-	dataAtom = append(dataAtom, coverData...)
-
-	atomSize := 8 + len(dataAtom)
-	atom := make([]byte, 4)
-	atom[0] = byte(atomSize >> 24)
-	atom[1] = byte(atomSize >> 16)
-	atom[2] = byte(atomSize >> 8)
-	atom[3] = byte(atomSize)
-	atom = append(atom, []byte("covr")...)
-	atom = append(atom, dataAtom...)
-
-	return atom
-}
-
 func GetM4AQuality(filePath string) (AudioQuality, error) {
 	f, err := os.Open(filePath)
 	if err != nil {
@@ -989,52 +655,6 @@ func findAtomInRange(f *os.File, start, size int64, target string, fileSize int6
 	return atomHeader{}, false, nil
 }
 
-func writeAtomHeader(w io.Writer, typ string, size int64, headerSize int64) error {
-	if len(typ) != 4 {
-		return fmt.Errorf("invalid atom type: %s", typ)
-	}
-
-	if headerSize == 16 {
-		header := make([]byte, 16)
-		binary.BigEndian.PutUint32(header[0:4], 1)
-		copy(header[4:8], []byte(typ))
-		binary.BigEndian.PutUint64(header[8:16], uint64(size))
-		_, err := w.Write(header)
-		return err
-	}
-
-	if size > int64(^uint32(0)) {
-		return fmt.Errorf("atom size exceeds 32-bit for %s", typ)
-	}
-
-	header := make([]byte, 8)
-	binary.BigEndian.PutUint32(header[0:4], uint32(size))
-	copy(header[4:8], []byte(typ))
-	_, err := w.Write(header)
-	return err
-}
-
-func copyRange(dst io.Writer, src *os.File, offset, length int64) error {
-	if length <= 0 {
-		return nil
-	}
-	if _, err := src.Seek(offset, io.SeekStart); err != nil {
-		return fmt.Errorf("failed to seek source: %w", err)
-	}
-	if _, err := io.CopyN(dst, src, length); err != nil {
-		return fmt.Errorf("failed to copy data: %w", err)
-	}
-	return nil
-}
-
-func buildUdtaAtom(metaAtom []byte) []byte {
-	size := 8 + len(metaAtom)
-	header := make([]byte, 8)
-	binary.BigEndian.PutUint32(header[0:4], uint32(size))
-	copy(header[4:8], []byte("udta"))
-	return append(header, metaAtom...)
-}
-
 func findAudioSampleEntry(f *os.File, start, end, fileSize int64) (int64, string, error) {
 	const chunkSize = 64 * 1024
 	patternMP4A := []byte("mp4a")

go_backend/mobile_deps.go

@@ -0,0 +1,10 @@
+// mobile_deps.go
+// This file ensures gomobile dependencies are not removed by go mod tidy.
+// These packages are required by gomobile bind but not directly imported in code.
+
+package gobackend
+
+import (
+	// Required for gomobile bind to work
+	_ "golang.org/x/mobile/bind"
+)

go_backend/parallel.go

@@ -14,9 +14,11 @@ type TrackIDCacheEntry struct {
 }
 
 type TrackIDCache struct {
-	cache map[string]*TrackIDCacheEntry
-	mu    sync.RWMutex
-	ttl   time.Duration
+	cache           map[string]*TrackIDCacheEntry
+	mu              sync.RWMutex
+	ttl             time.Duration
+	lastCleanup     time.Time
+	cleanupInterval time.Duration
 }
 
 var (
@@ -27,8 +29,9 @@ var (
 func GetTrackIDCache() *TrackIDCache {
 	trackIDCacheOnce.Do(func() {
 		globalTrackIDCache = &TrackIDCache{
-			cache: make(map[string]*TrackIDCacheEntry),
-			ttl:   30 * time.Minute,
+			cache:           make(map[string]*TrackIDCacheEntry),
+			ttl:             30 * time.Minute,
+			cleanupInterval: 5 * time.Minute,
 		}
 	})
 	return globalTrackIDCache
@@ -36,13 +39,33 @@ func GetTrackIDCache() *TrackIDCache {
 
 func (c *TrackIDCache) Get(isrc string) *TrackIDCacheEntry {
 	c.mu.RLock()
-	defer c.mu.RUnlock()
-
 	entry, exists := c.cache[isrc]
-	if !exists || time.Now().After(entry.ExpiresAt) {
+	if !exists {
+		c.mu.RUnlock()
 		return nil
 	}
-	return entry
+	expired := time.Now().After(entry.ExpiresAt)
+	c.mu.RUnlock()
+
+	if !expired {
+		return entry
+	}
+
+	c.mu.Lock()
+	entry, exists = c.cache[isrc]
+	if exists && time.Now().After(entry.ExpiresAt) {
+		delete(c.cache, isrc)
+	}
+	c.mu.Unlock()
+	return nil
+}
+
+func (c *TrackIDCache) pruneExpiredLocked(now time.Time) {
+	for key, entry := range c.cache {
+		if now.After(entry.ExpiresAt) {
+			delete(c.cache, key)
+		}
+	}
 }
 
 func (c *TrackIDCache) SetTidal(isrc string, trackID int64) {
@@ -55,7 +78,13 @@ func (c *TrackIDCache) SetTidal(isrc string, trackID int64) {
 		c.cache[isrc] = entry
 	}
 	entry.TidalTrackID = trackID
-	entry.ExpiresAt = time.Now().Add(c.ttl)
+	now := time.Now()
+	entry.ExpiresAt = now.Add(c.ttl)
+
+	if c.cleanupInterval > 0 && (c.lastCleanup.IsZero() || now.Sub(c.lastCleanup) >= c.cleanupInterval) {
+		c.pruneExpiredLocked(now)
+		c.lastCleanup = now
+	}
 }
 
 func (c *TrackIDCache) SetQobuz(isrc string, trackID int64) {
@@ -68,7 +97,13 @@ func (c *TrackIDCache) SetQobuz(isrc string, trackID int64) {
 		c.cache[isrc] = entry
 	}
 	entry.QobuzTrackID = trackID
-	entry.ExpiresAt = time.Now().Add(c.ttl)
+	now := time.Now()
+	entry.ExpiresAt = now.Add(c.ttl)
+
+	if c.cleanupInterval > 0 && (c.lastCleanup.IsZero() || now.Sub(c.lastCleanup) >= c.cleanupInterval) {
+		c.pruneExpiredLocked(now)
+		c.lastCleanup = now
+	}
 }
 
 func (c *TrackIDCache) SetAmazon(isrc string, trackID string) {
@@ -81,7 +116,13 @@ func (c *TrackIDCache) SetAmazon(isrc string, trackID string) {
 		c.cache[isrc] = entry
 	}
 	entry.AmazonTrackID = trackID
-	entry.ExpiresAt = time.Now().Add(c.ttl)
+	now := time.Now()
+	entry.ExpiresAt = now.Add(c.ttl)
+
+	if c.cleanupInterval > 0 && (c.lastCleanup.IsZero() || now.Sub(c.lastCleanup) >= c.cleanupInterval) {
+		c.pruneExpiredLocked(now)
+		c.lastCleanup = now
+	}
 }
 
 func (c *TrackIDCache) Clear() {
@@ -96,7 +137,6 @@ func (c *TrackIDCache) Size() int {
 	return len(c.cache)
 }
 
-// ParallelDownloadResult holds results from parallel operations
 type ParallelDownloadResult struct {
 	CoverData  []byte
 	LyricsData *LyricsResponse
@@ -121,14 +161,11 @@ func FetchCoverAndLyricsParallel(
 		wg.Add(1)
 		go func() {
 			defer wg.Done()
-			fmt.Println("[Parallel] Starting cover download...")
 			data, err := downloadCoverToMemory(coverURL, maxQualityCover)
 			if err != nil {
 				result.CoverErr = err
-				fmt.Printf("[Parallel] Cover download failed: %v\n", err)
 			} else {
 				result.CoverData = data
-				fmt.Printf("[Parallel] Cover downloaded: %d bytes\n", len(data))
 			}
 		}()
 	}
@@ -137,20 +174,16 @@ func FetchCoverAndLyricsParallel(
 		wg.Add(1)
 		go func() {
 			defer wg.Done()
-			fmt.Println("[Parallel] Starting lyrics fetch...")
 			client := NewLyricsClient()
 			durationSec := float64(durationMs) / 1000.0
 			lyrics, err := client.FetchLyricsAllSources(spotifyID, trackName, artistName, durationSec)
 			if err != nil {
 				result.LyricsErr = err
-				fmt.Printf("[Parallel] Lyrics fetch failed: %v\n", err)
 			} else if lyrics != nil && len(lyrics.Lines) > 0 {
 				result.LyricsData = lyrics
 				result.LyricsLRC = convertToLRCWithMetadata(lyrics, trackName, artistName)
-				fmt.Printf("[Parallel] Lyrics fetched: %d lines\n", len(lyrics.Lines))
 			} else {
 				result.LyricsErr = fmt.Errorf("no lyrics found")
-				fmt.Println("[Parallel] No lyrics found")
 			}
 		}()
 	}
@@ -163,8 +196,8 @@ type PreWarmCacheRequest struct {
 	ISRC       string
 	TrackName  string
 	ArtistName string
-	SpotifyID  string // Needed for Amazon (SongLink lookup)
-	Service    string // "tidal", "qobuz", "amazon"
+	SpotifyID  string
+	Service    string
 }
 
 func PreWarmTrackCache(requests []PreWarmCacheRequest) {
@@ -172,7 +205,6 @@ func PreWarmTrackCache(requests []PreWarmCacheRequest) {
 		return
 	}
 
-	fmt.Printf("[Cache] Pre-warming cache for %d tracks...\n", len(requests))
 	cache := GetTrackIDCache()
 
 	semaphore := make(chan struct{}, 3)
@@ -201,7 +233,6 @@ func PreWarmTrackCache(requests []PreWarmCacheRequest) {
 	}
 
 	wg.Wait()
-	fmt.Printf("[Cache] Pre-warm complete. Cache size: %d\n", cache.Size())
 }
 
 func preWarmTidalCache(isrc, _, _ string) {
@@ -209,7 +240,6 @@ func preWarmTidalCache(isrc, _, _ string) {
 	track, err := downloader.SearchTrackByISRC(isrc)
 	if err == nil && track != nil {
 		GetTrackIDCache().SetTidal(isrc, track.ID)
-		fmt.Printf("[Cache] Cached Tidal ID for ISRC %s: %d\n", isrc, track.ID)
 	}
 }
 
@@ -218,7 +248,6 @@ func preWarmQobuzCache(isrc string) {
 	track, err := downloader.SearchTrackByISRC(isrc)
 	if err == nil && track != nil {
 		GetTrackIDCache().SetQobuz(isrc, track.ID)
-		fmt.Printf("[Cache] Cached Qobuz ID for ISRC %s: %d\n", isrc, track.ID)
 	}
 }
 
@@ -227,7 +256,6 @@ func preWarmAmazonCache(isrc, spotifyID string) {
 	availability, err := client.CheckTrackAvailability(spotifyID, isrc)
 	if err == nil && availability != nil && availability.Amazon {
 		GetTrackIDCache().SetAmazon(isrc, availability.AmazonURL)
-		fmt.Printf("[Cache] Cached Amazon URL for ISRC %s\n", isrc)
 	}
 }
 
@@ -240,7 +268,6 @@ func PreWarmCache(tracksJSON string) error {
 
 func ClearTrackCache() {
 	GetTrackIDCache().Clear()
-	fmt.Println("[Cache] Track ID cache cleared")
 }
 
 func GetCacheSize() int {

go_backend/progress.go

@@ -78,7 +78,6 @@ func GetItemProgress(itemID string) string {
 	return "{}"
 }
 
-// StartItemProgress initializes progress tracking for an item
 func StartItemProgress(itemID string) {
 	multiMu.Lock()
 	defer multiMu.Unlock()
@@ -93,7 +92,6 @@ func StartItemProgress(itemID string) {
 	}
 }
 
-// SetItemBytesTotal sets total bytes for an item
 func SetItemBytesTotal(itemID string, total int64) {
 	multiMu.Lock()
 	defer multiMu.Unlock()
@@ -103,7 +101,6 @@ func SetItemBytesTotal(itemID string, total int64) {
 	}
 }
 
-// SetItemBytesReceived sets bytes received for an item
 func SetItemBytesReceived(itemID string, received int64) {
 	multiMu.Lock()
 	defer multiMu.Unlock()
@@ -116,7 +113,6 @@ func SetItemBytesReceived(itemID string, received int64) {
 	}
 }
 
-// SetItemBytesReceivedWithSpeed sets bytes received and speed for an item
 func SetItemBytesReceivedWithSpeed(itemID string, received int64, speedMBps float64) {
 	multiMu.Lock()
 	defer multiMu.Unlock()
@@ -130,7 +126,6 @@ func SetItemBytesReceivedWithSpeed(itemID string, received int64, speedMBps floa
 	}
 }
 
-// CompleteItemProgress marks an item as complete
 func CompleteItemProgress(itemID string) {
 	multiMu.Lock()
 	defer multiMu.Unlock()
@@ -142,7 +137,6 @@ func CompleteItemProgress(itemID string) {
 	}
 }
 
-// SetItemProgress sets progress for an item directly
 func SetItemProgress(itemID string, progress float64, bytesReceived, bytesTotal int64) {
 	multiMu.Lock()
 	defer multiMu.Unlock()
@@ -158,7 +152,6 @@ func SetItemProgress(itemID string, progress float64, bytesReceived, bytesTotal
 	}
 }
 
-// SetItemFinalizing marks an item as finalizing (embedding metadata)
 func SetItemFinalizing(itemID string) {
 	multiMu.Lock()
 	defer multiMu.Unlock()
@@ -169,7 +162,6 @@ func SetItemFinalizing(itemID string) {
 	}
 }
 
-// RemoveItemProgress removes progress tracking for an item
 func RemoveItemProgress(itemID string) {
 	multiMu.Lock()
 	defer multiMu.Unlock()
@@ -177,7 +169,6 @@ func RemoveItemProgress(itemID string) {
 	delete(multiProgress.Items, itemID)
 }
 
-// ClearAllItemProgress clears all item progress
 func ClearAllItemProgress() {
 	multiMu.Lock()
 	defer multiMu.Unlock()
@@ -185,7 +176,6 @@ func ClearAllItemProgress() {
 	multiProgress.Items = make(map[string]*ItemProgress)
 }
 
-// setDownloadDir sets the default download directory
 func setDownloadDir(path string) error {
 	downloadDirMu.Lock()
 	defer downloadDirMu.Unlock()
@@ -193,20 +183,18 @@ func setDownloadDir(path string) error {
 	return nil
 }
 
-// ItemProgressWriter wraps io.Writer to track download progress for a specific item
 type ItemProgressWriter struct {
 	writer       interface{ Write([]byte) (int, error) }
 	itemID       string
 	current      int64
-	lastReported int64     // Track last reported bytes for threshold-based updates
-	startTime    time.Time // Track start time for speed calculation
-	lastTime     time.Time // Track last update time for speed calculation
-	lastBytes    int64     // Track bytes at last speed calculation
+	lastReported int64
+	startTime    time.Time
+	lastTime     time.Time
+	lastBytes    int64
 }
 
-const progressUpdateThreshold = 64 * 1024 // Update progress every 64KB
+const progressUpdateThreshold = 64 * 1024
 
-// NewItemProgressWriter creates a new progress writer for a specific item
 func NewItemProgressWriter(w interface{ Write([]byte) (int, error) }, itemID string) *ItemProgressWriter {
 	now := time.Now()
 	return &ItemProgressWriter{
@@ -220,7 +208,6 @@ func NewItemProgressWriter(w interface{ Write([]byte) (int, error) }, itemID str
 	}
 }
 
-// Write implements io.Writer with threshold-based progress updates and speed tracking
 func (pw *ItemProgressWriter) Write(p []byte) (int, error) {
 	if pw.itemID != "" && isDownloadCancelled(pw.itemID) {
 		return 0, ErrDownloadCancelled

go_backend/qobuz.go

@@ -52,12 +52,10 @@ func qobuzArtistsMatch(expectedArtist, foundArtist string) bool {
 	normExpected := strings.ToLower(strings.TrimSpace(expectedArtist))
 	normFound := strings.ToLower(strings.TrimSpace(foundArtist))
 
-	// Exact match
 	if normExpected == normFound {
 		return true
 	}
 
-	// Check if one contains the other
 	if strings.Contains(normExpected, normFound) || strings.Contains(normFound, normExpected) {
 		return true
 	}
@@ -112,24 +110,19 @@ func qobuzSplitArtists(artists string) []string {
 	return result
 }
 
-// qobuzSameWordsUnordered checks if two strings have the same words regardless of order
-// Useful for Japanese names: "Sawano Hiroyuki" vs "Hiroyuki Sawano"
 func qobuzSameWordsUnordered(a, b string) bool {
 	wordsA := strings.Fields(a)
 	wordsB := strings.Fields(b)
 
-	// Must have same number of words
 	if len(wordsA) != len(wordsB) || len(wordsA) == 0 {
 		return false
 	}
 
-	// Sort and compare
 	sortedA := make([]string, len(wordsA))
 	sortedB := make([]string, len(wordsB))
 	copy(sortedA, wordsA)
 	copy(sortedB, wordsB)
 
-	// Simple bubble sort (usually just 2-3 words)
 	for i := 0; i < len(sortedA)-1; i++ {
 		for j := i + 1; j < len(sortedA); j++ {
 			if sortedA[i] > sortedA[j] {
@@ -153,7 +146,6 @@ func qobuzTitlesMatch(expectedTitle, foundTitle string) bool {
 	normExpected := strings.ToLower(strings.TrimSpace(expectedTitle))
 	normFound := strings.ToLower(strings.TrimSpace(foundTitle))
 
-	// Exact match
 	if normExpected == normFound {
 		return true
 	}
@@ -182,8 +174,6 @@ func qobuzTitlesMatch(expectedTitle, foundTitle string) bool {
 		return true
 	}
 
-	// If scripts are TRULY different (Latin vs CJK/Arabic/Cyrillic), assume match (transliteration)
-	// Don't treat Latin Extended (Polish, French, etc.) as different script
 	expectedLatin := qobuzIsLatinScript(expectedTitle)
 	foundLatin := qobuzIsLatinScript(foundTitle)
 	if expectedLatin != foundLatin {
@@ -194,9 +184,7 @@ func qobuzTitlesMatch(expectedTitle, foundTitle string) bool {
 	return false
 }
 
-// qobuzExtractCoreTitle extracts the main title before any parentheses or brackets
 func qobuzExtractCoreTitle(title string) string {
-	// Find first occurrence of ( or [
 	parenIdx := strings.Index(title, "(")
 	bracketIdx := strings.Index(title, "[")
 	dashIdx := strings.Index(title, " - ")
@@ -281,49 +269,28 @@ func qobuzCleanTitle(title string) string {
 	return strings.TrimSpace(cleaned)
 }
 
-// qobuzIsLatinScript checks if a string is primarily Latin script
-// Returns true for ASCII and Latin Extended characters (European languages)
-// Returns false for CJK, Arabic, Cyrillic, etc.
 func qobuzIsLatinScript(s string) bool {
 	for _, r := range s {
-		// Skip common punctuation and numbers
 		if r < 128 {
 			continue
 		}
-		// Latin Extended-A: U+0100 to U+017F (Polish, Czech, etc.)
-		// Latin Extended-B: U+0180 to U+024F
-		// Latin Extended Additional: U+1E00 to U+1EFF
-		// Latin Extended-C/D/E: various ranges
-		if (r >= 0x0100 && r <= 0x024F) || // Latin Extended A & B
-			(r >= 0x1E00 && r <= 0x1EFF) || // Latin Extended Additional
-			(r >= 0x00C0 && r <= 0x00FF) { // Latin-1 Supplement (accented chars)
+		if (r >= 0x0100 && r <= 0x024F) ||
+			(r >= 0x1E00 && r <= 0x1EFF) ||
+			(r >= 0x00C0 && r <= 0x00FF) {
 			continue
 		}
-		// CJK ranges - definitely different script
-		if (r >= 0x4E00 && r <= 0x9FFF) || // CJK Unified Ideographs
-			(r >= 0x3040 && r <= 0x309F) || // Hiragana
-			(r >= 0x30A0 && r <= 0x30FF) || // Katakana
-			(r >= 0xAC00 && r <= 0xD7AF) || // Hangul (Korean)
-			(r >= 0x0600 && r <= 0x06FF) || // Arabic
-			(r >= 0x0400 && r <= 0x04FF) { // Cyrillic
+		if (r >= 0x4E00 && r <= 0x9FFF) ||
+			(r >= 0x3040 && r <= 0x309F) ||
+			(r >= 0x30A0 && r <= 0x30FF) ||
+			(r >= 0xAC00 && r <= 0xD7AF) ||
+			(r >= 0x0600 && r <= 0x06FF) ||
+			(r >= 0x0400 && r <= 0x04FF) {
 			return false
 		}
 	}
 	return true
 }
 
-// qobuzIsASCIIString checks if a string contains only ASCII characters
-// Kept for potential future use
-// func qobuzIsASCIIString(s string) bool {
-// 	for _, r := range s {
-// 		if r > 127 {
-// 			return false
-// 		}
-// 	}
-// 	return true
-// }
-
-// containsQueryQobuz checks if a query already exists in the list
 func containsQueryQobuz(queries []string, query string) bool {
 	for _, q := range queries {
 		if q == query {
@@ -336,7 +303,7 @@ func containsQueryQobuz(queries []string, query string) bool {
 func NewQobuzDownloader() *QobuzDownloader {
 	qobuzDownloaderOnce.Do(func() {
 		globalQobuzDownloader = &QobuzDownloader{
-			client: NewHTTPClientWithTimeout(DefaultTimeout), // 60s timeout
+			client: NewHTTPClientWithTimeout(DefaultTimeout),
 			appID:  "798273057",
 		}
 	})
@@ -344,7 +311,6 @@ func NewQobuzDownloader() *QobuzDownloader {
 }
 
 func (q *QobuzDownloader) GetTrackByID(trackID int64) (*QobuzTrack, error) {
-	// Qobuz API: /track/get?track_id=XXX
 	apiBase, _ := base64.StdEncoding.DecodeString("aHR0cHM6Ly93d3cucW9idXouY29tL2FwaS5qc29uLzAuMi90cmFjay9nZXQ/dHJhY2tfaWQ9")
 	trackURL := fmt.Sprintf("%s%d&app_id=%s", string(apiBase), trackID, q.appID)
 
@@ -371,14 +337,11 @@ func (q *QobuzDownloader) GetTrackByID(trackID int64) (*QobuzTrack, error) {
 	return &track, nil
 }
 
-// GetAvailableAPIs returns list of available Qobuz APIs
-// Uses same APIs as PC version for compatibility
 func (q *QobuzDownloader) GetAvailableAPIs() []string {
-	// Same APIs as PC version (referensi/backend/qobuz.go)
-	// Primary: dab.yeet.su, Fallback: dabmusic.xyz
 	encodedAPIs := []string{
-		"ZGFiLnllZXQuc3UvYXBpL3N0cmVhbT90cmFja0lkPQ==", // dab.yeet.su/api/stream?trackId= (PRIMARY - same as PC)
-		"ZGFibXVzaWMueHl6L2FwaS9zdHJlYW0/dHJhY2tJZD0=", // dabmusic.xyz/api/stream?trackId= (FALLBACK - same as PC)
+		"ZGFiLnllZXQuc3UvYXBpL3N0cmVhbT90cmFja0lkPQ==",
+		"ZGFibXVzaWMueHl6L2FwaS9zdHJlYW0/dHJhY2tJZD0=",
+		"cW9idXouc3F1aWQud3RmL2FwaS9kb3dubG9hZC1tdXNpYz90cmFja19pZD0=",
 	}
 
 	var apis []string
@@ -393,6 +356,86 @@ func (q *QobuzDownloader) GetAvailableAPIs() []string {
 	return apis
 }
 
+func mapJumoQuality(quality string) int {
+	switch quality {
+	case "6":
+		return 6
+	case "7":
+		return 7
+	case "27":
+		return 27
+	default:
+		return 6
+	}
+}
+
+func decodeXOR(data []byte) string {
+	text := string(data)
+	runes := []rune(text)
+	result := make([]rune, len(runes))
+	for i, char := range runes {
+		key := rune((i * 17) % 128)
+		result[i] = char ^ 253 ^ key
+	}
+	return string(result)
+}
+
+func (q *QobuzDownloader) downloadFromJumo(trackID int64, quality string) (string, error) {
+	formatID := mapJumoQuality(quality)
+	region := "US"
+	jumoURL := fmt.Sprintf("https://jumo-dl.pages.dev/file?track_id=%d&format_id=%d&region=%s", trackID, formatID, region)
+
+	GoLog("[Qobuz] Trying Jumo API fallback...\n")
+
+	client := NewHTTPClientWithTimeout(30 * time.Second)
+	req, err := http.NewRequest("GET", jumoURL, nil)
+	if err != nil {
+		return "", err
+	}
+
+	resp, err := client.Do(req)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		return "", fmt.Errorf("Jumo API returned HTTP %d", resp.StatusCode)
+	}
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return "", err
+	}
+
+	var result map[string]any
+	if err := json.Unmarshal(body, &result); err != nil {
+		decoded := decodeXOR(body)
+		if err := json.Unmarshal([]byte(decoded), &result); err != nil {
+			return "", fmt.Errorf("failed to parse Jumo response (plain or XOR): %w", err)
+		}
+	}
+
+	if urlVal, ok := result["url"].(string); ok && urlVal != "" {
+		GoLog("[Qobuz] Jumo API returned URL successfully\n")
+		return urlVal, nil
+	}
+
+	if data, ok := result["data"].(map[string]any); ok {
+		if urlVal, ok := data["url"].(string); ok && urlVal != "" {
+			GoLog("[Qobuz] Jumo API returned URL successfully (from data)\n")
+			return urlVal, nil
+		}
+	}
+
+	if linkVal, ok := result["link"].(string); ok && linkVal != "" {
+		GoLog("[Qobuz] Jumo API returned URL successfully (from link)\n")
+		return linkVal, nil
+	}
+
+	return "", fmt.Errorf("URL not found in Jumo response")
+}
+
 func (q *QobuzDownloader) SearchTrackByISRC(isrc string) (*QobuzTrack, error) {
 	apiBase, _ := base64.StdEncoding.DecodeString("aHR0cHM6Ly93d3cucW9idXouY29tL2FwaS5qc29uLzAuMi90cmFjay9zZWFyY2g/cXVlcnk9")
 	searchURL := fmt.Sprintf("%s%s&limit=50&app_id=%s", string(apiBase), url.QueryEscape(isrc), q.appID)
@@ -421,7 +464,6 @@ func (q *QobuzDownloader) SearchTrackByISRC(isrc string) (*QobuzTrack, error) {
 		return nil, err
 	}
 
-	// Find exact ISRC match
 	for i := range result.Tracks.Items {
 		if result.Tracks.Items[i].ISRC == isrc {
 			return &result.Tracks.Items[i], nil
@@ -435,7 +477,6 @@ func (q *QobuzDownloader) SearchTrackByISRC(isrc string) (*QobuzTrack, error) {
 	return nil, fmt.Errorf("no exact ISRC match found for: %s", isrc)
 }
 
-// expectedDurationSec is the expected duration in seconds (0 to skip verification)
 func (q *QobuzDownloader) SearchTrackByISRCWithDuration(isrc string, expectedDurationSec int) (*QobuzTrack, error) {
 	GoLog("[Qobuz] Searching by ISRC: %s\n", isrc)
 
@@ -468,7 +509,6 @@ func (q *QobuzDownloader) SearchTrackByISRCWithDuration(isrc string, expectedDur
 
 	GoLog("[Qobuz] ISRC search returned %d results\n", len(result.Tracks.Items))
 
-	// Find ISRC matches
 	var isrcMatches []*QobuzTrack
 	for i := range result.Tracks.Items {
 		if result.Tracks.Items[i].ISRC == isrc {
@@ -522,35 +562,26 @@ func (q *QobuzDownloader) SearchTrackByMetadata(trackName, artistName string) (*
 	return q.SearchTrackByMetadataWithDuration(trackName, artistName, 0)
 }
 
-// Now includes romaji conversion for Japanese text (same as Tidal)
-// Also includes title verification to prevent wrong song downloads
 func (q *QobuzDownloader) SearchTrackByMetadataWithDuration(trackName, artistName string, expectedDurationSec int) (*QobuzTrack, error) {
 	apiBase, _ := base64.StdEncoding.DecodeString("aHR0cHM6Ly93d3cucW9idXouY29tL2FwaS5qc29uLzAuMi90cmFjay9zZWFyY2g/cXVlcnk9")
 
-	// Try multiple search strategies (same as Tidal/PC version)
 	queries := []string{}
 
-	// Strategy 1: Artist + Track name
 	if artistName != "" && trackName != "" {
 		queries = append(queries, artistName+" "+trackName)
 	}
 
-	// Strategy 2: Track name only
 	if trackName != "" {
 		queries = append(queries, trackName)
 	}
 
-	// Strategy 3: Romaji versions if Japanese detected
 	if ContainsJapanese(trackName) || ContainsJapanese(artistName) {
-		// Convert to romaji (hiragana/katakana only, kanji stays)
 		romajiTrack := JapaneseToRomaji(trackName)
 		romajiArtist := JapaneseToRomaji(artistName)
 
-		// Clean and remove ALL non-ASCII characters (including kanji)
 		cleanRomajiTrack := CleanToASCII(romajiTrack)
 		cleanRomajiArtist := CleanToASCII(romajiArtist)
 
-		// Artist + Track romaji (cleaned to ASCII only)
 		if cleanRomajiArtist != "" && cleanRomajiTrack != "" {
 			romajiQuery := cleanRomajiArtist + " " + cleanRomajiTrack
 			if !containsQueryQobuz(queries, romajiQuery) {
@@ -559,7 +590,6 @@ func (q *QobuzDownloader) SearchTrackByMetadataWithDuration(trackName, artistNam
 			}
 		}
 
-		// Track romaji only (cleaned)
 		if cleanRomajiTrack != "" && cleanRomajiTrack != trackName {
 			if !containsQueryQobuz(queries, cleanRomajiTrack) {
 				queries = append(queries, cleanRomajiTrack)
@@ -567,7 +597,6 @@ func (q *QobuzDownloader) SearchTrackByMetadataWithDuration(trackName, artistNam
 		}
 	}
 
-	// Strategy 4: Artist only as last resort
 	if artistName != "" {
 		artistOnly := CleanToASCII(JapaneseToRomaji(artistName))
 		if artistOnly != "" && !containsQueryQobuz(queries, artistOnly) {
@@ -626,7 +655,6 @@ func (q *QobuzDownloader) SearchTrackByMetadataWithDuration(trackName, artistNam
 		return nil, fmt.Errorf("no tracks found for: %s - %s", artistName, trackName)
 	}
 
-	// Filter by title match first (NEW - like Tidal)
 	var titleMatches []*QobuzTrack
 	for i := range allTracks {
 		track := &allTracks[i]
@@ -637,7 +665,6 @@ func (q *QobuzDownloader) SearchTrackByMetadataWithDuration(trackName, artistNam
 
 	GoLog("[Qobuz] Title matches: %d out of %d results\n", len(titleMatches), len(allTracks))
 
-	// If no title matches, log warning but continue with all tracks
 	tracksToCheck := titleMatches
 	if len(titleMatches) == 0 {
 		GoLog("[Qobuz] WARNING: No title matches for '%s', checking all %d results\n", trackName, len(allTracks))
@@ -646,7 +673,6 @@ func (q *QobuzDownloader) SearchTrackByMetadataWithDuration(trackName, artistNam
 		}
 	}
 
-	// If duration verification is requested
 	if expectedDurationSec > 0 {
 		var durationMatches []*QobuzTrack
 		for _, track := range tracksToCheck {
@@ -662,12 +688,12 @@ func (q *QobuzDownloader) SearchTrackByMetadataWithDuration(trackName, artistNam
 		if len(durationMatches) > 0 {
 			for _, track := range durationMatches {
 				if track.MaximumBitDepth >= 24 {
-					GoLog("[Qobuz] ✓ Match found: '%s' by '%s' (title+duration verified, hi-res)\n",
+					GoLog("[Qobuz] Match found: '%s' by '%s' (title+duration verified, hi-res)\n",
 						track.Title, track.Performer.Name)
 					return track, nil
 				}
 			}
-			GoLog("[Qobuz] ✓ Match found: '%s' by '%s' (title+duration verified)\n",
+			GoLog("[Qobuz] Match found: '%s' by '%s' (title+duration verified)\n",
 				durationMatches[0].Title, durationMatches[0].Performer.Name)
 			return durationMatches[0], nil
 		}
@@ -675,17 +701,16 @@ func (q *QobuzDownloader) SearchTrackByMetadataWithDuration(trackName, artistNam
 		return nil, fmt.Errorf("no tracks found with matching title and duration (expected '%s', %ds)", trackName, expectedDurationSec)
 	}
 
-	// No duration verification, return best quality from title matches
 	for _, track := range tracksToCheck {
 		if track.MaximumBitDepth >= 24 {
-			GoLog("[Qobuz] ✓ Match found: '%s' by '%s' (title verified, hi-res)\n",
+			GoLog("[Qobuz] Match found: '%s' by '%s' (title verified, hi-res)\n",
 				track.Title, track.Performer.Name)
 			return track, nil
 		}
 	}
 
 	if len(tracksToCheck) > 0 {
-		GoLog("[Qobuz] ✓ Match found: '%s' by '%s' (title verified)\n",
+		GoLog("[Qobuz] Match found: '%s' by '%s' (title verified)\n",
 			tracksToCheck[0].Title, tracksToCheck[0].Performer.Name)
 		return tracksToCheck[0], nil
 	}
@@ -693,7 +718,6 @@ func (q *QobuzDownloader) SearchTrackByMetadataWithDuration(trackName, artistNam
 	return nil, fmt.Errorf("no matching track found for: %s - %s", artistName, trackName)
 }
 
-// qobuzAPIResult holds the result from a parallel API request
 type qobuzAPIResult struct {
 	apiURL      string
 	downloadURL string
@@ -711,7 +735,6 @@ func getQobuzDownloadURLParallel(apis []string, trackID int64, quality string) (
 	resultChan := make(chan qobuzAPIResult, len(apis))
 	startTime := time.Now()
 
-	// Start all requests in parallel
 	for _, apiURL := range apis {
 		go func(api string) {
 			reqStart := time.Now()
@@ -744,13 +767,11 @@ func getQobuzDownloadURLParallel(apis []string, trackID int64, quality string) (
 				return
 			}
 
-			// Check if response is HTML (error page)
 			if len(body) > 0 && body[0] == '<' {
 				resultChan <- qobuzAPIResult{apiURL: api, err: fmt.Errorf("received HTML instead of JSON"), duration: time.Since(reqStart)}
 				return
 			}
 
-			// Check for error in JSON response
 			var errorResp struct {
 				Error string `json:"error"`
 			}
@@ -776,15 +797,13 @@ func getQobuzDownloadURLParallel(apis []string, trackID int64, quality string) (
 		}(apiURL)
 	}
 
-	// Collect results - return first success
 	var errors []string
 
 	for i := 0; i < len(apis); i++ {
 		result := <-resultChan
 		if result.err == nil {
-			GoLog("[Qobuz] [Parallel] ✓ Got response from %s in %v\n", result.apiURL, result.duration)
+			GoLog("[Qobuz] [Parallel] Got response from %s in %v\n", result.apiURL, result.duration)
 
-			// Drain remaining results to avoid goroutine leaks
 			go func(remaining int) {
 				for j := 0; j < remaining; j++ {
 					<-resultChan
@@ -812,18 +831,38 @@ func (q *QobuzDownloader) GetDownloadURL(trackID int64, quality string) (string,
 	}
 
 	_, downloadURL, err := getQobuzDownloadURLParallel(apis, trackID, quality)
-	if err != nil {
-		return "", err
+	if err == nil {
+		return downloadURL, nil
 	}
 
-	return downloadURL, nil
+	GoLog("[Qobuz] Standard APIs failed, trying Jumo fallback...\n")
+	jumoURL, jumoErr := q.downloadFromJumo(trackID, quality)
+	if jumoErr == nil {
+		return jumoURL, nil
+	}
+
+	if quality == "27" {
+		GoLog("[Qobuz] Hi-res (27) failed, trying 24-bit (7)...\n")
+		jumoURL, jumoErr = q.downloadFromJumo(trackID, "7")
+		if jumoErr == nil {
+			return jumoURL, nil
+		}
+	}
+
+	if quality == "27" || quality == "7" {
+		GoLog("[Qobuz] 24-bit failed, trying 16-bit (6)...\n")
+		jumoURL, jumoErr = q.downloadFromJumo(trackID, "6")
+		if jumoErr == nil {
+			return jumoURL, nil
+		}
+	}
+
+	return "", fmt.Errorf("all Qobuz APIs and Jumo fallback failed: %w", err)
 }
 
-// DownloadFile downloads a file from URL with User-Agent and progress tracking
 func (q *QobuzDownloader) DownloadFile(downloadURL, outputPath, itemID string) error {
 	ctx := context.Background()
 
-	// Initialize item progress (required for all downloads)
 	if itemID != "" {
 		StartItemProgress(itemID)
 		defer CompleteItemProgress(itemID)
@@ -873,7 +912,6 @@ func (q *QobuzDownloader) DownloadFile(downloadURL, outputPath, itemID string) e
 		written, err = io.Copy(bufWriter, resp.Body)
 	}
 
-	// Flush buffer before checking for errors
 	flushErr := bufWriter.Flush()
 	closeErr := out.Close()
 
@@ -893,7 +931,6 @@ func (q *QobuzDownloader) DownloadFile(downloadURL, outputPath, itemID string) e
 		return fmt.Errorf("failed to close file: %w", closeErr)
 	}
 
-	// Verify file size if Content-Length was provided
 	if expectedSize > 0 && written != expectedSize {
 		os.Remove(outputPath)
 		return fmt.Errorf("incomplete download: expected %d bytes, got %d bytes", expectedSize, written)
@@ -941,11 +978,9 @@ func downloadFromQobuz(req DownloadRequest) (QobuzDownloadResult, error) {
 		}
 	}
 
-	// OPTIMIZATION: Check cache first for track ID
 	if track == nil && req.ISRC != "" {
 		if cached := GetTrackIDCache().Get(req.ISRC); cached != nil && cached.QobuzTrackID > 0 {
 			GoLog("[Qobuz] Cache hit! Using cached track ID: %d\n", cached.QobuzTrackID)
-			// For Qobuz we need to search again to get full track info, but we can use the ID
 			track, err = downloader.SearchTrackByISRC(req.ISRC)
 			if err != nil {
 				GoLog("[Qobuz] Cache hit but search failed: %v\n", err)
@@ -954,11 +989,9 @@ func downloadFromQobuz(req DownloadRequest) (QobuzDownloadResult, error) {
 		}
 	}
 
-	// Strategy 1: Search by ISRC with duration verification
 	if track == nil && req.ISRC != "" {
 		GoLog("[Qobuz] Trying ISRC search: %s\n", req.ISRC)
 		track, err = downloader.SearchTrackByISRCWithDuration(req.ISRC, expectedDurationSec)
-		// Verify artist AND title
 		if track != nil {
 			if !qobuzArtistsMatch(req.ArtistName, track.Performer.Name) {
 				GoLog("[Qobuz] Artist mismatch from ISRC search: expected '%s', got '%s'. Rejecting.\n",
@@ -972,10 +1005,8 @@ func downloadFromQobuz(req DownloadRequest) (QobuzDownloadResult, error) {
 		}
 	}
 
-	// Strategy 2: Search by metadata with duration verification (includes title verification)
 	if track == nil {
 		track, err = downloader.SearchTrackByMetadataWithDuration(req.TrackName, req.ArtistName, expectedDurationSec)
-		// Verify artist (title already verified in SearchTrackByMetadataWithDuration)
 		if track != nil && !qobuzArtistsMatch(req.ArtistName, track.Performer.Name) {
 			GoLog("[Qobuz] Artist mismatch from metadata search: expected '%s', got '%s'. Rejecting.\n",
 				req.ArtistName, track.Performer.Name)
@@ -991,7 +1022,6 @@ func downloadFromQobuz(req DownloadRequest) (QobuzDownloadResult, error) {
 		return QobuzDownloadResult{}, fmt.Errorf("qobuz search failed: %s", errMsg)
 	}
 
-	// Log match found and cache the track ID
 	GoLog("[Qobuz] Match found: '%s' by '%s' (duration: %ds)\n", track.Title, track.Performer.Name, track.Duration)
 	if req.ISRC != "" {
 		GetTrackIDCache().SetQobuz(req.ISRC, track.ID)
@@ -1012,22 +1042,19 @@ func downloadFromQobuz(req DownloadRequest) (QobuzDownloadResult, error) {
 		return QobuzDownloadResult{FilePath: "EXISTS:" + outputPath}, nil
 	}
 
-	// Map quality from Tidal format to Qobuz format
-	// Tidal: LOSSLESS (16-bit), HI_RES (24-bit), HI_RES_LOSSLESS (24-bit hi-res)
-	// Qobuz: 5 (MP3 320), 6 (16-bit), 7 (24-bit 96kHz), 27 (24-bit 192kHz)
-	qobuzQuality := "27" // Default to highest quality
+	qobuzQuality := "27"
 	switch req.Quality {
 	case "LOSSLESS":
-		qobuzQuality = "6" // 16-bit FLAC
+		qobuzQuality = "6"
 	case "HI_RES":
-		qobuzQuality = "7" // 24-bit 96kHz
+		qobuzQuality = "7"
 	case "HI_RES_LOSSLESS":
-		qobuzQuality = "27" // 24-bit 192kHz
+		qobuzQuality = "27"
 	}
 	GoLog("[Qobuz] Using quality: %s (mapped from %s)\n", qobuzQuality, req.Quality)
 
 	actualBitDepth := track.MaximumBitDepth
-	actualSampleRate := int(track.MaximumSamplingRate * 1000) // Convert kHz to Hz
+	actualSampleRate := int(track.MaximumSamplingRate * 1000)
 	GoLog("[Qobuz] Actual quality: %d-bit/%.1fkHz\n", actualBitDepth, track.MaximumSamplingRate)
 
 	downloadURL, err := downloader.GetDownloadURL(track.ID, qobuzQuality)
@@ -1035,7 +1062,6 @@ func downloadFromQobuz(req DownloadRequest) (QobuzDownloadResult, error) {
 		return QobuzDownloadResult{}, fmt.Errorf("failed to get download URL: %w", err)
 	}
 
-	// START PARALLEL: Fetch cover and lyrics while downloading audio
 	var parallelResult *ParallelDownloadResult
 	parallelDone := make(chan struct{})
 	go func() {
@@ -1051,7 +1077,6 @@ func downloadFromQobuz(req DownloadRequest) (QobuzDownloadResult, error) {
 		)
 	}()
 
-	// Download audio file with item ID for progress tracking
 	if err := downloader.DownloadFile(downloadURL, outputPath, req.ItemID); err != nil {
 		if errors.Is(err, ErrDownloadCancelled) {
 			return QobuzDownloadResult{}, ErrDownloadCancelled
@@ -1059,7 +1084,6 @@ func downloadFromQobuz(req DownloadRequest) (QobuzDownloadResult, error) {
 		return QobuzDownloadResult{}, fmt.Errorf("download failed: %w", err)
 	}
 
-	// Wait for parallel operations to complete
 	<-parallelDone
 
 	if req.ItemID != "" {
@@ -1072,7 +1096,6 @@ func downloadFromQobuz(req DownloadRequest) (QobuzDownloadResult, error) {
 		albumName = req.AlbumName
 	}
 
-	// Use track number from request if available, otherwise from Qobuz API
 	actualTrackNumber := req.TrackNumber
 	if actualTrackNumber == 0 {
 		actualTrackNumber = track.TrackNumber
@@ -1082,15 +1105,15 @@ func downloadFromQobuz(req DownloadRequest) (QobuzDownloadResult, error) {
 		Title:       track.Title,
 		Artist:      track.Performer.Name,
 		Album:       albumName,
-		AlbumArtist: req.AlbumArtist, // Qobuz track struct might not have this handy, keep req or check album struct
+		AlbumArtist: req.AlbumArtist,
 		Date:        track.Album.ReleaseDate,
 		TrackNumber: actualTrackNumber,
 		TotalTracks: req.TotalTracks,
-		DiscNumber:  req.DiscNumber, // QobuzTrack struct usually doesn't have disc info in simple search result
+		DiscNumber:  req.DiscNumber,
 		ISRC:        track.ISRC,
-		Genre:       req.Genre,     // From Deezer album metadata
-		Label:       req.Label,     // From Deezer album metadata
-		Copyright:   req.Copyright, // From Deezer album metadata
+		Genre:       req.Genre,
+		Label:       req.Label,
+		Copyright:   req.Copyright,
 	}
 
 	var coverData []byte
@@ -1130,7 +1153,6 @@ func downloadFromQobuz(req DownloadRequest) (QobuzDownloadResult, error) {
 		fmt.Println("[Qobuz] No lyrics available from parallel fetch")
 	}
 
-	// Add to ISRC index for fast duplicate checking
 	AddToISRCIndex(req.OutputDir, req.ISRC, outputPath)
 
 	return QobuzDownloadResult{
@@ -1142,7 +1164,7 @@ func downloadFromQobuz(req DownloadRequest) (QobuzDownloadResult, error) {
 		Album:       track.Album.Title,
 		ReleaseDate: track.Album.ReleaseDate,
 		TrackNumber: actualTrackNumber,
-		DiscNumber:  req.DiscNumber, // Qobuz track struct limitations
+		DiscNumber:  req.DiscNumber,
 		ISRC:        track.ISRC,
 	}, nil
 }

go_backend/songlink.go

@@ -43,10 +43,6 @@ func NewSongLinkClient() *SongLinkClient {
 }
 
 func (s *SongLinkClient) CheckTrackAvailability(spotifyTrackID string, isrc string) (*TrackAvailability, error) {
-	if spotifyTrackID == "" {
-		return nil, fmt.Errorf("spotify track ID is empty")
-	}
-	
 	songLinkRateLimiter.WaitForSlot()
 
 	spotifyBase, _ := base64.StdEncoding.DecodeString("aHR0cHM6Ly9vcGVuLnNwb3RpZnkuY29tL3RyYWNrLw==")
@@ -115,10 +111,6 @@ func (s *SongLinkClient) CheckTrackAvailability(spotifyTrackID string, isrc stri
 		availability.DeezerID = extractDeezerIDFromURL(deezerLink.URL)
 	}
 
-	if isrc != "" {
-		availability.Qobuz = checkQobuzAvailability(isrc)
-	}
-
 	return availability, nil
 }
 
@@ -191,11 +183,11 @@ func (s *SongLinkClient) GetDeezerIDFromSpotify(spotifyTrackID string) (string,
 	if err != nil {
 		return "", err
 	}
-	
+
 	if !availability.Deezer || availability.DeezerID == "" {
 		return "", fmt.Errorf("track not found on Deezer")
 	}
-	
+
 	return availability.DeezerID, nil
 }
 
@@ -208,10 +200,8 @@ type AlbumAvailability struct {
 }
 
 func (s *SongLinkClient) CheckAlbumAvailability(spotifyAlbumID string) (*AlbumAvailability, error) {
-	// Use global rate limiter
 	songLinkRateLimiter.WaitForSlot()
 
-	// Build API URL for album
 	spotifyBase, _ := base64.StdEncoding.DecodeString("aHR0cHM6Ly9vcGVuLnNwb3RpZnkuY29tL2FsYnVtLw==")
 	spotifyURL := fmt.Sprintf("%s%s", string(spotifyBase), spotifyAlbumID)
 
@@ -268,11 +258,11 @@ func (s *SongLinkClient) GetDeezerAlbumIDFromSpotify(spotifyAlbumID string) (str
 	if err != nil {
 		return "", err
 	}
-	
+
 	if !availability.Deezer || availability.DeezerID == "" {
 		return "", fmt.Errorf("album not found on Deezer")
 	}
-	
+
 	return availability.DeezerID, nil
 }
 
@@ -281,7 +271,23 @@ func (s *SongLinkClient) CheckAvailabilityFromDeezer(deezerTrackID string) (*Tra
 	if deezerTrackID == "" {
 		return nil, fmt.Errorf("deezer track ID is empty")
 	}
-	
+
+	availability, err := s.checkAvailabilityFromDeezerSongLink(deezerTrackID)
+	if err != nil {
+		LogWarn("SongLink", "SongLink failed for Deezer, trying IDHS fallback: %v", err)
+		idhsClient := NewIDHSClient()
+		availability, err = idhsClient.GetAvailabilityFromDeezer(deezerTrackID)
+		if err != nil {
+			return nil, fmt.Errorf("both SongLink and IDHS failed: %w", err)
+		}
+		LogInfo("SongLink", "IDHS fallback successful for Deezer %s", deezerTrackID)
+	}
+
+	return availability, nil
+}
+
+// checkAvailabilityFromDeezerSongLink is the original SongLink implementation for Deezer
+func (s *SongLinkClient) checkAvailabilityFromDeezerSongLink(deezerTrackID string) (*TrackAvailability, error) {
 	songLinkRateLimiter.WaitForSlot()
 
 	deezerURL := fmt.Sprintf("https://www.deezer.com/track/%s", deezerTrackID)
@@ -301,7 +307,6 @@ func (s *SongLinkClient) CheckAvailabilityFromDeezer(deezerTrackID string) (*Tra
 	}
 	defer resp.Body.Close()
 
-	// Handle specific error codes
 	if resp.StatusCode == 400 {
 		return nil, fmt.Errorf("track not found on SongLink (invalid Deezer ID)")
 	}
@@ -369,12 +374,9 @@ func (s *SongLinkClient) CheckAvailabilityByPlatform(platform, entityType, entit
 	if entityID == "" {
 		return nil, fmt.Errorf("%s ID is empty", platform)
 	}
-	
-	// Use global rate limiter
+
 	songLinkRateLimiter.WaitForSlot()
 
-	// Build API URL using platform, type, and id parameters (as per API docs)
-	// https://api.song.link/v1-alpha.1/links?platform=deezer&type=song&id=123456
 	apiURL := fmt.Sprintf("https://api.song.link/v1-alpha.1/links?platform=%s&type=%s&id=%s&userCountry=US",
 		url.QueryEscape(platform),
 		url.QueryEscape(entityType),
@@ -392,7 +394,6 @@ func (s *SongLinkClient) CheckAvailabilityByPlatform(platform, entityType, entit
 	}
 	defer resp.Body.Close()
 
-	// Handle specific error codes
 	if resp.StatusCode == 400 {
 		return nil, fmt.Errorf("track not found on SongLink (invalid %s ID)", platform)
 	}
@@ -464,11 +465,11 @@ func (s *SongLinkClient) GetSpotifyIDFromDeezer(deezerTrackID string) (string, e
 	if err != nil {
 		return "", err
 	}
-	
+
 	if availability.SpotifyID == "" {
 		return "", fmt.Errorf("track not found on Spotify")
 	}
-	
+
 	return availability.SpotifyID, nil
 }
 
@@ -478,11 +479,11 @@ func (s *SongLinkClient) GetTidalURLFromDeezer(deezerTrackID string) (string, er
 	if err != nil {
 		return "", err
 	}
-	
+
 	if !availability.Tidal || availability.TidalURL == "" {
 		return "", fmt.Errorf("track not found on Tidal")
 	}
-	
+
 	return availability.TidalURL, nil
 }
 
@@ -491,10 +492,80 @@ func (s *SongLinkClient) GetAmazonURLFromDeezer(deezerTrackID string) (string, e
 	if err != nil {
 		return "", err
 	}
-	
+
 	if !availability.Amazon || availability.AmazonURL == "" {
 		return "", fmt.Errorf("track not found on Amazon Music")
 	}
-	
+
 	return availability.AmazonURL, nil
 }
+
+func (s *SongLinkClient) CheckAvailabilityFromURL(inputURL string) (*TrackAvailability, error) {
+	songLinkRateLimiter.WaitForSlot()
+
+	apiBase, _ := base64.StdEncoding.DecodeString("aHR0cHM6Ly9hcGkuc29uZy5saW5rL3YxLWFscGhhLjEvbGlua3M/dXJsPQ==")
+	apiURL := fmt.Sprintf("%s%s", string(apiBase), url.QueryEscape(inputURL))
+
+	req, err := http.NewRequest("GET", apiURL, nil)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create request: %w", err)
+	}
+
+	retryConfig := DefaultRetryConfig()
+	resp, err := DoRequestWithRetry(s.client, req, retryConfig)
+	if err != nil {
+		return nil, fmt.Errorf("failed to check availability: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == 400 || resp.StatusCode == 404 {
+		return nil, fmt.Errorf("track not found on SongLink")
+	}
+	if resp.StatusCode == 429 {
+		return nil, fmt.Errorf("SongLink rate limit exceeded")
+	}
+	if resp.StatusCode != 200 {
+		return nil, fmt.Errorf("SongLink API returned status %d", resp.StatusCode)
+	}
+
+	body, err := ReadResponseBody(resp)
+	if err != nil {
+		return nil, fmt.Errorf("failed to read response: %w", err)
+	}
+
+	var songLinkResp struct {
+		LinksByPlatform map[string]struct {
+			URL      string `json:"url"`
+			EntityID string `json:"entityUniqueId"`
+		} `json:"linksByPlatform"`
+	}
+
+	if err := json.Unmarshal(body, &songLinkResp); err != nil {
+		return nil, fmt.Errorf("failed to decode response: %w", err)
+	}
+
+	availability := &TrackAvailability{}
+
+	if spotifyLink, ok := songLinkResp.LinksByPlatform["spotify"]; ok && spotifyLink.URL != "" {
+		availability.SpotifyID = extractSpotifyIDFromURL(spotifyLink.URL)
+	}
+	if tidalLink, ok := songLinkResp.LinksByPlatform["tidal"]; ok && tidalLink.URL != "" {
+		availability.Tidal = true
+		availability.TidalURL = tidalLink.URL
+	}
+	if amazonLink, ok := songLinkResp.LinksByPlatform["amazonMusic"]; ok && amazonLink.URL != "" {
+		availability.Amazon = true
+		availability.AmazonURL = amazonLink.URL
+	}
+	if qobuzLink, ok := songLinkResp.LinksByPlatform["qobuz"]; ok && qobuzLink.URL != "" {
+		availability.Qobuz = true
+		availability.QobuzURL = qobuzLink.URL
+	}
+	if deezerLink, ok := songLinkResp.LinksByPlatform["deezer"]; ok && deezerLink.URL != "" {
+		availability.Deezer = true
+		availability.DeezerURL = deezerLink.URL
+		availability.DeezerID = extractDeezerIDFromURL(deezerLink.URL)
+	}
+
+	return availability, nil
+}

go_backend/spotify.go

@@ -63,10 +63,8 @@ var (
 	credentialsMu      sync.RWMutex
 )
 
-// ErrNoSpotifyCredentials is returned when Spotify credentials are not configured
 var ErrNoSpotifyCredentials = errors.New("Spotify credentials not configured. Please set your own Client ID and Secret in Settings, or use Deezer as metadata source (free, no credentials required)")
 
-// SetSpotifyCredentials sets custom Spotify API credentials
 func SetSpotifyCredentials(clientID, clientSecret string) {
 	credentialsMu.Lock()
 	defer credentialsMu.Unlock()
@@ -89,7 +87,6 @@ func HasSpotifyCredentials() bool {
 	return false
 }
 
-// getCredentials returns the current credentials or error if not configured
 func getCredentials() (string, string, error) {
 	credentialsMu.RLock()
 	defer credentialsMu.RUnlock()
@@ -143,7 +140,7 @@ type TrackMetadata struct {
 	DiscNumber  int    `json:"disc_number,omitempty"`
 	ExternalURL string `json:"external_urls"`
 	ISRC        string `json:"isrc"`
-	AlbumType   string `json:"album_type,omitempty"` // album, single, ep, compilation
+	AlbumType   string `json:"album_type,omitempty"`
 }
 
 type AlbumTrackMetadata struct {
@@ -212,7 +209,7 @@ type ArtistAlbumMetadata struct {
 	ReleaseDate string `json:"release_date"`
 	TotalTracks int    `json:"total_tracks"`
 	Images      string `json:"images"`
-	AlbumType   string `json:"album_type"` // album, single, compilation
+	AlbumType   string `json:"album_type"`
 	Artists     string `json:"artists"`
 }
 
@@ -238,9 +235,29 @@ type SearchArtistResult struct {
 	Popularity int    `json:"popularity"`
 }
 
+type SearchAlbumResult struct {
+	ID          string `json:"id"`
+	Name        string `json:"name"`
+	Artists     string `json:"artists"`
+	Images      string `json:"images"`
+	ReleaseDate string `json:"release_date"`
+	TotalTracks int    `json:"total_tracks"`
+	AlbumType   string `json:"album_type"`
+}
+
+type SearchPlaylistResult struct {
+	ID          string `json:"id"`
+	Name        string `json:"name"`
+	Owner       string `json:"owner"`
+	Images      string `json:"images"`
+	TotalTracks int    `json:"total_tracks"`
+}
+
 type SearchAllResult struct {
-	Tracks  []TrackMetadata      `json:"tracks"`
-	Artists []SearchArtistResult `json:"artists"`
+	Tracks    []TrackMetadata        `json:"tracks"`
+	Artists   []SearchArtistResult   `json:"artists"`
+	Albums    []SearchAlbumResult    `json:"albums"`
+	Playlists []SearchPlaylistResult `json:"playlists"`
 }
 
 type spotifyURI struct {
@@ -514,7 +531,6 @@ func (c *SpotifyMetadataClient) fetchAlbum(ctx context.Context, albumID, token s
 
 	albumImage := firstImageURL(data.Images)
 
-	// Get first artist ID
 	var firstArtistId string
 	if len(data.Artists) > 0 {
 		firstArtistId = data.Artists[0].ID
@@ -547,7 +563,6 @@ func (c *SpotifyMetadataClient) fetchAlbum(ctx context.Context, albumID, token s
 
 	fmt.Printf("[Spotify] Album has %d tracks (total: %d)\n", len(allTrackItems), data.TotalTracks)
 
-	// Collect track IDs for parallel ISRC fetching
 	trackIDs := make([]string, len(allTrackItems))
 	for i, item := range allTrackItems {
 		trackIDs[i] = item.ID
@@ -919,14 +934,14 @@ func (c *SpotifyMetadataClient) randomUserAgent() string {
 	defer c.rngMu.Unlock()
 
 	macMajor := c.rng.Intn(4) + 11
-	macMinor := c.rng.Intn(5) + 4          // 4-8
-	webkitMajor := c.rng.Intn(7) + 530     // 530-536
-	webkitMinor := c.rng.Intn(7) + 30      // 30-36
-	chromeMajor := c.rng.Intn(25) + 80     // 80-104
-	chromeBuild := c.rng.Intn(1500) + 3000 // 3000-4499
-	chromePatch := c.rng.Intn(65) + 60     // 60-124
-	safariMajor := c.rng.Intn(7) + 530     // 530-536
-	safariMinor := c.rng.Intn(6) + 30      // 30-35
+	macMinor := c.rng.Intn(5) + 4
+	webkitMajor := c.rng.Intn(7) + 530
+	webkitMinor := c.rng.Intn(7) + 30
+	chromeMajor := c.rng.Intn(25) + 80
+	chromeBuild := c.rng.Intn(1500) + 3000
+	chromePatch := c.rng.Intn(65) + 60
+	safariMajor := c.rng.Intn(7) + 530
+	safariMinor := c.rng.Intn(6) + 30
 
 	return fmt.Sprintf(
 		"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_%d_%d) AppleWebKit/%d.%d (KHTML, like Gecko) Chrome/%d.0.%d.%d Safari/%d.%d",

go_backend/tidal.go

@@ -119,17 +119,18 @@ func NewTidalDownloader() *TidalDownloader {
 	return globalTidalDownloader
 }
 
-// GetAvailableAPIs returns list of available Tidal APIs
 func (t *TidalDownloader) GetAvailableAPIs() []string {
 	encodedAPIs := []string{
-		"dGlkYWwua2lub3BsdXMub25saW5l",
-		"dGlkYWwtYXBpLmJpbmltdW0ub3Jn",
-		"dHJpdG9uLnNxdWlkLnd0Zg==",
-		"dm9nZWwucXFkbC5zaXRl",
-		"bWF1cy5xcWRsLnNpdGU=",
-		"aHVuZC5xcWRsLnNpdGU=",
-		"a2F0emUucXFkbC5zaXRl",
-		"d29sZi5xcWRsLnNpdGU=",
+		"dGlkYWwtYXBpLmJpbmltdW0ub3Jn",     // tidal-api.binimum.org (priority)
+		"dGlkYWwua2lub3BsdXMub25saW5l",     // tidal.kinoplus.online
+		"dHJpdG9uLnNxdWlkLnd0Zg==",         // triton.squid.wtf
+		"dm9nZWwucXFkbC5zaXRl",             // vogel.qqdl.site
+		"bWF1cy5xcWRsLnNpdGU=",             // maus.qqdl.site
+		"aHVuZC5xcWRsLnNpdGU=",             // hund.qqdl.site
+		"a2F0emUucXFkbC5zaXRl",             // katze.qqdl.site
+		"d29sZi5xcWRsLnNpdGU=",             // wolf.qqdl.site
+		"aGlmaS1vbmUuc3BvdGlzYXZlci5uZXQ=", // hifi-one.spotisaver.net
+		"aGlmaS10d28uc3BvdGlzYXZlci5uZXQ=", // hifi-two.spotisaver.net
 	}
 
 	var apis []string
@@ -249,7 +250,6 @@ func (t *TidalDownloader) GetTrackIDFromURL(tidalURL string) (int64, error) {
 	return trackID, nil
 }
 
-// GetTrackInfoByID gets track info by Tidal track ID
 func (t *TidalDownloader) GetTrackInfoByID(trackID int64) (*TidalTrack, error) {
 	token, err := t.GetAccessToken()
 	if err != nil {
@@ -317,7 +317,6 @@ func (t *TidalDownloader) SearchTrackByISRC(isrc string) (*TidalTrack, error) {
 		return nil, err
 	}
 
-	// Find exact ISRC match
 	for i := range result.Items {
 		if result.Items[i].ISRC == isrc {
 			return &result.Items[i], nil
@@ -341,7 +340,6 @@ func (t *TidalDownloader) SearchTrackByMetadataWithISRC(trackName, artistName, s
 	// Build search queries - multiple strategies (same as PC version)
 	queries := []string{}
 
-	// Strategy 1: Artist + Track name (original)
 	if artistName != "" && trackName != "" {
 		queries = append(queries, artistName+" "+trackName)
 	}
@@ -442,13 +440,13 @@ func (t *TidalDownloader) SearchTrackByMetadataWithISRC(trackName, artistName, s
 								durationDiff = -durationDiff
 							}
 							if durationDiff <= 3 {
-								GoLog("[Tidal] ✓ ISRC match: '%s' (duration verified)\n", track.Title)
+								GoLog("[Tidal] ISRC match: '%s' (duration verified)\n", track.Title)
 								return track, nil
 							}
 							GoLog("[Tidal] ISRC match but duration mismatch (expected %ds, got %ds), continuing...\n",
 								expectedDuration, track.Duration)
 						} else {
-							GoLog("[Tidal] ✓ ISRC match: '%s'\n", track.Title)
+							GoLog("[Tidal] ISRC match: '%s'\n", track.Title)
 							return track, nil
 						}
 					}
@@ -487,7 +485,7 @@ func (t *TidalDownloader) SearchTrackByMetadataWithISRC(trackName, artistName, s
 				}
 
 				if len(durationVerifiedMatches) > 0 {
-					GoLog("[Tidal] ✓ ISRC match with duration verification: '%s' (expected %ds, found %ds)\n",
+					GoLog("[Tidal] ISRC match with duration verification: '%s' (expected %ds, found %ds)\n",
 						durationVerifiedMatches[0].Title, expectedDuration, durationVerifiedMatches[0].Duration)
 					return durationVerifiedMatches[0], nil
 				}
@@ -498,11 +496,11 @@ func (t *TidalDownloader) SearchTrackByMetadataWithISRC(trackName, artistName, s
 					expectedDuration, isrcMatches[0].Duration)
 			}
 
-			GoLog("[Tidal] ✓ ISRC match (no duration verification): '%s'\n", isrcMatches[0].Title)
+			GoLog("[Tidal] ISRC match (no duration verification): '%s'\n", isrcMatches[0].Title)
 			return isrcMatches[0], nil
 		}
 
-		GoLog("[Tidal] ✗ No ISRC match found for: %s\n", spotifyISRC)
+		GoLog("[Tidal] No ISRC match found for: %s\n", spotifyISRC)
 		return nil, fmt.Errorf("ISRC mismatch: no track found with ISRC %s on Tidal", spotifyISRC)
 	}
 
@@ -584,7 +582,6 @@ type tidalAPIResult struct {
 	duration time.Duration
 }
 
-// Returns the first successful result (supports both v1 and v2 API formats)
 func getDownloadURLParallel(apis []string, trackID int64, quality string) (string, TidalDownloadInfo, error) {
 	if len(apis) == 0 {
 		return "", TidalDownloadInfo{}, fmt.Errorf("no APIs available")
@@ -669,7 +666,7 @@ func getDownloadURLParallel(apis []string, trackID int64, quality string) (strin
 	for i := 0; i < len(apis); i++ {
 		result := <-resultChan
 		if result.err == nil {
-			GoLog("[Tidal] [Parallel] ✓ Got response from %s (%d-bit/%dHz) in %v\n",
+			GoLog("[Tidal] [Parallel] Got response from %s (%d-bit/%dHz) in %v\n",
 				result.apiURL, result.info.BitDepth, result.info.SampleRate, result.duration)
 
 			go func(remaining int) {
@@ -795,7 +792,6 @@ func parseManifest(manifestB64 string) (directURL string, initURL string, mediaU
 	return "", initURL, mediaURLs, nil
 }
 
-// DownloadFile downloads a file from URL with progress tracking
 func (t *TidalDownloader) DownloadFile(downloadURL, outputPath, itemID string) error {
 	ctx := context.Background()
 
@@ -968,7 +964,15 @@ func (t *TidalDownloader) downloadFromManifest(ctx context.Context, manifestB64,
 		return nil
 	}
 
-	m4aPath := strings.TrimSuffix(outputPath, ".flac") + ".m4a"
+	// For DASH format, determine correct M4A path
+	// If outputPath already ends with .m4a, use it directly
+	// Otherwise, convert .flac to .m4a
+	var m4aPath string
+	if strings.HasSuffix(outputPath, ".m4a") {
+		m4aPath = outputPath
+	} else {
+		m4aPath = strings.TrimSuffix(outputPath, ".flac") + ".m4a"
+	}
 	GoLog("[Tidal] DASH format - downloading %d segments directly to: %s\n", len(mediaURLs), m4aPath)
 
 	out, err := os.Create(m4aPath)
@@ -1094,6 +1098,7 @@ type TidalDownloadResult struct {
 	TrackNumber int
 	DiscNumber  int
 	ISRC        string
+	LyricsLRC   string // LRC content for embedding in converted files
 }
 
 func artistsMatch(spotifyArtist, tidalArtist string) bool {
@@ -1104,7 +1109,6 @@ func artistsMatch(spotifyArtist, tidalArtist string) bool {
 		return true
 	}
 
-	// Check if one contains the other (for cases like "Artist" vs "Artist feat. Someone")
 	if strings.Contains(normSpotify, normTidal) || strings.Contains(normTidal, normSpotify) {
 		return true
 	}
@@ -1163,7 +1167,6 @@ func sameWordsUnordered(a, b string) bool {
 	wordsA := strings.Fields(a)
 	wordsB := strings.Fields(b)
 
-	// Must have same number of words
 	if len(wordsA) != len(wordsB) || len(wordsA) == 0 {
 		return false
 	}
@@ -1196,7 +1199,6 @@ func titlesMatch(expectedTitle, foundTitle string) bool {
 	normExpected := strings.ToLower(strings.TrimSpace(expectedTitle))
 	normFound := strings.ToLower(strings.TrimSpace(foundTitle))
 
-	// Exact match
 	if normExpected == normFound {
 		return true
 	}
@@ -1205,7 +1207,6 @@ func titlesMatch(expectedTitle, foundTitle string) bool {
 		return true
 	}
 
-	// Clean both titles and compare
 	cleanExpected := cleanTitle(normExpected)
 	cleanFound := cleanTitle(normFound)
 
@@ -1219,7 +1220,6 @@ func titlesMatch(expectedTitle, foundTitle string) bool {
 		}
 	}
 
-	// Extract core title (before any parentheses/brackets)
 	coreExpected := extractCoreTitle(normExpected)
 	coreFound := extractCoreTitle(normFound)
 
@@ -1227,7 +1227,6 @@ func titlesMatch(expectedTitle, foundTitle string) bool {
 		return true
 	}
 
-	// Don't treat Latin Extended (Polish, French, etc.) as different script
 	expectedLatin := isLatinScript(expectedTitle)
 	foundLatin := isLatinScript(foundTitle)
 	if expectedLatin != foundLatin {
@@ -1500,6 +1499,11 @@ func downloadFromTidal(req DownloadRequest) (TidalDownloadResult, error) {
 		GetTrackIDCache().SetTidal(req.ISRC, track.ID)
 	}
 
+	quality := req.Quality
+	if quality == "" {
+		quality = "LOSSLESS"
+	}
+
 	filename := buildFilenameFromTemplate(req.FilenameFormat, map[string]interface{}{
 		"title":  req.TrackName,
 		"artist": req.ArtistName,
@@ -1508,15 +1512,26 @@ func downloadFromTidal(req DownloadRequest) (TidalDownloadResult, error) {
 		"year":   extractYear(req.ReleaseDate),
 		"disc":   req.DiscNumber,
 	})
-	filename = sanitizeFilename(filename) + ".flac"
-	outputPath := filepath.Join(req.OutputDir, filename)
+
+	var outputPath string
+	var m4aPath string
+	if quality == "HIGH" {
+		filename = sanitizeFilename(filename) + ".m4a"
+		outputPath = filepath.Join(req.OutputDir, filename)
+		m4aPath = outputPath
+	} else {
+		filename = sanitizeFilename(filename) + ".flac"
+		outputPath = filepath.Join(req.OutputDir, filename)
+		m4aPath = strings.TrimSuffix(outputPath, ".flac") + ".m4a"
+	}
 
 	if fileInfo, statErr := os.Stat(outputPath); statErr == nil && fileInfo.Size() > 0 {
 		return TidalDownloadResult{FilePath: "EXISTS:" + outputPath}, nil
 	}
-	m4aPath := strings.TrimSuffix(outputPath, ".flac") + ".m4a"
-	if fileInfo, statErr := os.Stat(m4aPath); statErr == nil && fileInfo.Size() > 0 {
-		return TidalDownloadResult{FilePath: "EXISTS:" + m4aPath}, nil
+	if quality != "HIGH" {
+		if fileInfo, statErr := os.Stat(m4aPath); statErr == nil && fileInfo.Size() > 0 {
+			return TidalDownloadResult{FilePath: "EXISTS:" + m4aPath}, nil
+		}
 	}
 
 	tmpPath := outputPath + ".m4a.tmp"
@@ -1525,10 +1540,6 @@ func downloadFromTidal(req DownloadRequest) (TidalDownloadResult, error) {
 		os.Remove(tmpPath)
 	}
 
-	quality := req.Quality
-	if quality == "" {
-		quality = "LOSSLESS"
-	}
 	GoLog("[Tidal] Using quality: %s\n", quality)
 
 	downloadInfo, err := downloader.GetDownloadURL(track.ID, quality)
@@ -1591,7 +1602,6 @@ func downloadFromTidal(req DownloadRequest) (TidalDownloadResult, error) {
 		GoLog("[Tidal] Using release date from Tidal API: %s\n", releaseDate)
 	}
 
-	// Use track number from request if available, otherwise from Tidal API
 	actualTrackNumber := req.TrackNumber
 	actualDiscNumber := req.DiscNumber
 	if actualTrackNumber == 0 {
@@ -1654,15 +1664,52 @@ func downloadFromTidal(req DownloadRequest) (TidalDownloadResult, error) {
 			fmt.Println("[Tidal] No lyrics available from parallel fetch")
 		}
 	} else if strings.HasSuffix(actualOutputPath, ".m4a") {
-		fmt.Println("[Tidal] Skipping metadata embedding for M4A file (will be handled after FFmpeg conversion)")
+		if quality == "HIGH" {
+			GoLog("[Tidal] HIGH quality M4A - skipping metadata embedding (file from server is already valid)\n")
+
+			if req.EmbedLyrics && parallelResult != nil && parallelResult.LyricsLRC != "" {
+				lyricsMode := req.LyricsMode
+				if lyricsMode == "" {
+					lyricsMode = "embed"
+				}
+
+				if lyricsMode == "external" || lyricsMode == "both" {
+					GoLog("[Tidal] Saving external LRC file for M4A (mode: %s)...\n", lyricsMode)
+					if lrcPath, lrcErr := SaveLRCFile(actualOutputPath, parallelResult.LyricsLRC); lrcErr != nil {
+						GoLog("[Tidal] Warning: failed to save LRC file: %v\n", lrcErr)
+					} else {
+						GoLog("[Tidal] LRC file saved: %s\n", lrcPath)
+					}
+				}
+			}
+		} else {
+			fmt.Println("[Tidal] Skipping metadata embedding for M4A file (will be handled after FFmpeg conversion)")
+		}
 	}
 
 	AddToISRCIndex(req.OutputDir, req.ISRC, actualOutputPath)
 
+	bitDepth := downloadInfo.BitDepth
+	sampleRate := downloadInfo.SampleRate
+	lyricsLRC := ""
+	if quality == "HIGH" {
+		bitDepth = 0
+		sampleRate = 44100
+		if parallelResult != nil && parallelResult.LyricsLRC != "" {
+			lyricsMode := req.LyricsMode
+			if lyricsMode == "" {
+				lyricsMode = "embed"
+			}
+			if lyricsMode == "embed" || lyricsMode == "both" {
+				lyricsLRC = parallelResult.LyricsLRC
+			}
+		}
+	}
+
 	return TidalDownloadResult{
 		FilePath:    actualOutputPath,
-		BitDepth:    downloadInfo.BitDepth,
-		SampleRate:  downloadInfo.SampleRate,
+		BitDepth:    bitDepth,
+		SampleRate:  sampleRate,
 		Title:       track.Title,
 		Artist:      track.Artist.Name,
 		Album:       track.Album.Title,
@@ -1670,5 +1717,43 @@ func downloadFromTidal(req DownloadRequest) (TidalDownloadResult, error) {
 		TrackNumber: actualTrackNumber,
 		DiscNumber:  actualDiscNumber,
 		ISRC:        track.ISRC,
+		LyricsLRC:   lyricsLRC,
 	}, nil
 }
+
+func parseTidalURL(input string) (string, string, error) {
+	trimmed := strings.TrimSpace(input)
+	if trimmed == "" {
+		return "", "", fmt.Errorf("empty URL")
+	}
+
+	parsed, err := url.Parse(trimmed)
+	if err != nil {
+		return "", "", err
+	}
+
+	if parsed.Host != "tidal.com" && parsed.Host != "listen.tidal.com" && parsed.Host != "www.tidal.com" {
+		return "", "", fmt.Errorf("not a Tidal URL")
+	}
+
+	parts := strings.Split(strings.Trim(parsed.Path, "/"), "/")
+
+	// Handle /browse/track/123 format
+	if len(parts) > 0 && parts[0] == "browse" {
+		parts = parts[1:]
+	}
+
+	if len(parts) < 2 {
+		return "", "", fmt.Errorf("invalid Tidal URL format")
+	}
+
+	resourceType := parts[0]
+	resourceID := parts[1]
+
+	switch resourceType {
+	case "track", "album", "artist", "playlist":
+		return resourceType, resourceID, nil
+	default:
+		return "", "", fmt.Errorf("unsupported Tidal resource type: %s", resourceType)
+	}
+}

ios/Runner/AppDelegate.swift

@@ -222,7 +222,8 @@ import Gobackend  // Import Go framework
             let query = args["query"] as! String
             let trackLimit = args["track_limit"] as? Int ?? 15
             let artistLimit = args["artist_limit"] as? Int ?? 3
-            let response = GobackendSearchDeezerAll(query, Int(trackLimit), Int(artistLimit), &error)
+            let filter = args["filter"] as? String ?? ""
+            let response = GobackendSearchDeezerAll(query, Int(trackLimit), Int(artistLimit), filter, &error)
             if let error = error { throw error }
             return response
 
@@ -241,6 +242,20 @@ import Gobackend  // Import Go framework
             if let error = error { throw error }
             return response
 
+        case "parseTidalUrl":
+            let args = call.arguments as! [String: Any]
+            let url = args["url"] as! String
+            let response = GobackendParseTidalURLExport(url, &error)
+            if let error = error { throw error }
+            return response
+
+        case "convertTidalToSpotifyDeezer":
+            let args = call.arguments as! [String: Any]
+            let url = args["url"] as! String
+            let response = GobackendConvertTidalToSpotifyDeezer(url, &error)
+            if let error = error { throw error }
+            return response
+
         case "searchDeezerByISRC":
             let args = call.arguments as! [String: Any]
             let isrc = args["isrc"] as! String
@@ -686,6 +701,35 @@ import Gobackend  // Import Go framework
             if let error = error { throw error }
             return response
             
+        // Local Library Scanning
+        case "setLibraryCoverCacheDir":
+            let args = call.arguments as! [String: Any]
+            let cacheDir = args["cache_dir"] as! String
+            GobackendSetLibraryCoverCacheDirJSON(cacheDir)
+            return nil
+            
+        case "scanLibraryFolder":
+            let args = call.arguments as! [String: Any]
+            let folderPath = args["folder_path"] as! String
+            let response = GobackendScanLibraryFolderJSON(folderPath, &error)
+            if let error = error { throw error }
+            return response
+            
+        case "getLibraryScanProgress":
+            let response = GobackendGetLibraryScanProgressJSON()
+            return response
+            
+        case "cancelLibraryScan":
+            GobackendCancelLibraryScanJSON()
+            return nil
+            
+        case "readAudioMetadata":
+            let args = call.arguments as! [String: Any]
+            let filePath = args["file_path"] as! String
+            let response = GobackendReadAudioMetadataJSON(filePath, &error)
+            if let error = error { throw error }
+            return response
+            
         default:
             throw NSError(
                 domain: "SpotiFLAC",

ios/Runner/Info.plist

@@ -67,7 +67,7 @@
 	<key>NSAppTransportSecurity</key>
 	<dict>
 		<key>NSAllowsArbitraryLoads</key>
-		<true/>
+		<false/>
 	</dict>
 	
 	<!-- File Sharing - Allow access via Files app -->
@@ -81,5 +81,29 @@
 	<!-- Photo Library (for cover art if needed) -->
 	<key>NSPhotoLibraryUsageDescription</key>
 	<string>SpotiFLAC needs access to save album artwork</string>
+	
+	<!-- URL Schemes for deep linking -->
+	<key>CFBundleURLTypes</key>
+	<array>
+		<dict>
+			<key>CFBundleTypeRole</key>
+			<string>Viewer</string>
+			<key>CFBundleURLName</key>
+			<string>com.zarz.spotiflac</string>
+			<key>CFBundleURLSchemes</key>
+			<array>
+				<string>spotiflac</string>
+			</array>
+		</dict>
+	</array>
+	
+	<!-- Associated Domains for Universal Links -->
+	<key>LSApplicationQueriesSchemes</key>
+	<array>
+		<string>spotify</string>
+		<string>deezer</string>
+		<string>tidal</string>
+		<string>youtube-music</string>
+	</array>
 </dict>
 </plist>

lib/constants/app_info.dart

@@ -1,8 +1,8 @@
 /// App version and info constants
 /// Update version here only - all other files will reference this
 class AppInfo {
-static const String version = '3.2.0';
-  static const String buildNumber = '63';
+  static const String version = '3.4.0';
+  static const String buildNumber = '72';
   static const String fullVersion = '$version+$buildNumber';
   
   

lib/l10n/app_localizations.dart

@@ -142,7 +142,13 @@ abstract class AppLocalizations {
   /// **'Home'**
   String get navHome;
 
-  /// Bottom navigation - History tab
+  /// Bottom navigation - Library tab
+  ///
+  /// In en, this message translates to:
+  /// **'Library'**
+  String get navLibrary;
+
+  /// Bottom navigation - History tab (legacy)
   ///
   /// In en, this message translates to:
   /// **'History'**
@@ -952,6 +958,12 @@ abstract class AppLocalizations {
   /// **'The original HiFi project creator. The foundation of Tidal integration!'**
   String get aboutSachinsenalDesc;
 
+  /// Credit description for sjdonado
+  ///
+  /// In en, this message translates to:
+  /// **'Creator of I Don\'t Have Spotify (IDHS). The fallback link resolver that saves the day!'**
+  String get aboutSjdonadoDesc;
+
   /// Name of Amazon API service - DO NOT TRANSLATE
   ///
   /// In en, this message translates to:
@@ -1306,6 +1318,12 @@ abstract class AppLocalizations {
   /// **'iOS limitation: Empty folders cannot be selected. Choose a folder with at least one file.'**
   String get setupIosEmptyFolderWarning;
 
+  /// Error when user selects iCloud Drive on iOS
+  ///
+  /// In en, this message translates to:
+  /// **'iCloud Drive is not supported. Please use the app Documents folder.'**
+  String get setupIcloudNotSupported;
+
   /// App tagline in setup
   ///
   /// In en, this message translates to:
@@ -1750,6 +1768,12 @@ abstract class AppLocalizations {
   /// **'\"{trackName}\" already downloaded'**
   String snackbarAlreadyDownloaded(String trackName);
 
+  /// Snackbar - track already exists in local library
+  ///
+  /// In en, this message translates to:
+  /// **'\"{trackName}\" already exists in your library'**
+  String snackbarAlreadyInLibrary(String trackName);
+
   /// Snackbar - history deleted
   ///
   /// In en, this message translates to:
@@ -2962,6 +2986,24 @@ abstract class AppLocalizations {
   /// **'Failed to load lyrics'**
   String get trackLyricsLoadFailed;
 
+  /// Action - embed lyrics into audio file
+  ///
+  /// In en, this message translates to:
+  /// **'Embed Lyrics'**
+  String get trackEmbedLyrics;
+
+  /// Snackbar - lyrics saved to file
+  ///
+  /// In en, this message translates to:
+  /// **'Lyrics embedded successfully'**
+  String get trackLyricsEmbedded;
+
+  /// Message when track is instrumental (no lyrics)
+  ///
+  /// In en, this message translates to:
+  /// **'Instrumental track'**
+  String get trackInstrumental;
+
   /// Snackbar - content copied
   ///
   /// In en, this message translates to:
@@ -3376,35 +3418,65 @@ abstract class AppLocalizations {
   /// **'24-bit / up to 192kHz'**
   String get qualityHiResFlacMaxSubtitle;
 
-  /// Quality option - MP3 lossy format
+  /// Quality option - lossy format (MP3/Opus)
   ///
   /// In en, this message translates to:
-  /// **'MP3'**
-  String get qualityMp3;
+  /// **'Lossy'**
+  String get qualityLossy;
 
-  /// Technical spec for MP3
+  /// Technical spec for lossy MP3
   ///
   /// In en, this message translates to:
-  /// **'320kbps (converted from FLAC)'**
-  String get qualityMp3Subtitle;
+  /// **'MP3 320kbps (converted from FLAC)'**
+  String get qualityLossyMp3Subtitle;
 
-  /// Setting - enable MP3 quality option
+  /// Technical spec for lossy Opus
   ///
   /// In en, this message translates to:
-  /// **'Enable MP3 Option'**
-  String get enableMp3Option;
+  /// **'Opus 128kbps (converted from FLAC)'**
+  String get qualityLossyOpusSubtitle;
 
-  /// Subtitle when MP3 is enabled
+  /// Setting - enable lossy quality option
   ///
   /// In en, this message translates to:
-  /// **'MP3 quality option is available'**
-  String get enableMp3OptionSubtitleOn;
+  /// **'Enable Lossy Option'**
+  String get enableLossyOption;
 
-  /// Subtitle when MP3 is disabled
+  /// Subtitle when lossy is enabled
   ///
   /// In en, this message translates to:
-  /// **'Downloads FLAC then converts to 320kbps MP3'**
-  String get enableMp3OptionSubtitleOff;
+  /// **'Lossy quality option is available'**
+  String get enableLossyOptionSubtitleOn;
+
+  /// Subtitle when lossy is disabled
+  ///
+  /// In en, this message translates to:
+  /// **'Downloads FLAC then converts to lossy format'**
+  String get enableLossyOptionSubtitleOff;
+
+  /// Setting - choose lossy format
+  ///
+  /// In en, this message translates to:
+  /// **'Lossy Format'**
+  String get lossyFormat;
+
+  /// Description for lossy format picker
+  ///
+  /// In en, this message translates to:
+  /// **'Choose the lossy format for conversion'**
+  String get lossyFormatDescription;
+
+  /// MP3 format description
+  ///
+  /// In en, this message translates to:
+  /// **'320kbps, best compatibility'**
+  String get lossyFormatMp3Subtitle;
+
+  /// Opus format description
+  ///
+  /// In en, this message translates to:
+  /// **'128kbps, better quality at smaller size'**
+  String get lossyFormatOpusSubtitle;
 
   /// Note about quality availability
   ///
@@ -3592,6 +3664,66 @@ abstract class AppLocalizations {
   /// **'Are you sure you want to clear all downloads?'**
   String get queueClearAllMessage;
 
+  /// Button - export failed downloads to TXT
+  ///
+  /// In en, this message translates to:
+  /// **'Export'**
+  String get queueExportFailed;
+
+  /// Success message after exporting failed downloads
+  ///
+  /// In en, this message translates to:
+  /// **'Failed downloads exported to TXT file'**
+  String get queueExportFailedSuccess;
+
+  /// Action to clear failed downloads after export
+  ///
+  /// In en, this message translates to:
+  /// **'Clear Failed'**
+  String get queueExportFailedClear;
+
+  /// Error message when export fails
+  ///
+  /// In en, this message translates to:
+  /// **'Failed to export downloads'**
+  String get queueExportFailedError;
+
+  /// Setting toggle for auto-export
+  ///
+  /// In en, this message translates to:
+  /// **'Auto-export failed downloads'**
+  String get settingsAutoExportFailed;
+
+  /// Subtitle for auto-export setting
+  ///
+  /// In en, this message translates to:
+  /// **'Save failed downloads to TXT file automatically'**
+  String get settingsAutoExportFailedSubtitle;
+
+  /// Setting for network type preference
+  ///
+  /// In en, this message translates to:
+  /// **'Download Network'**
+  String get settingsDownloadNetwork;
+
+  /// Network option - use any connection
+  ///
+  /// In en, this message translates to:
+  /// **'WiFi + Mobile Data'**
+  String get settingsDownloadNetworkAny;
+
+  /// Network option - only use WiFi
+  ///
+  /// In en, this message translates to:
+  /// **'WiFi Only'**
+  String get settingsDownloadNetworkWifiOnly;
+
+  /// Subtitle explaining network preference
+  ///
+  /// In en, this message translates to:
+  /// **'Choose which network to use for downloads. When set to WiFi Only, downloads will pause on mobile data.'**
+  String get settingsDownloadNetworkSubtitle;
+
   /// Empty queue state title
   ///
   /// In en, this message translates to:
@@ -3688,6 +3820,18 @@ abstract class AppLocalizations {
   /// **'Albums/[2005] Album Name/'**
   String get albumFolderYearAlbumSubtitle;
 
+  /// Album folder option with singles inside artist
+  ///
+  /// In en, this message translates to:
+  /// **'Artist / Album + Singles'**
+  String get albumFolderArtistAlbumSingles;
+
+  /// Folder structure example
+  ///
+  /// In en, this message translates to:
+  /// **'Artist/Album/ and Artist/Singles/'**
+  String get albumFolderArtistAlbumSinglesSubtitle;
+
   /// Button - delete selected tracks
   ///
   /// In en, this message translates to:
@@ -3891,6 +4035,390 @@ abstract class AppLocalizations {
   /// In en, this message translates to:
   /// **'Failed to fetch some albums'**
   String get discographyFailedToFetch;
+
+  /// Section header for storage access settings
+  ///
+  /// In en, this message translates to:
+  /// **'Storage Access'**
+  String get sectionStorageAccess;
+
+  /// Toggle for MANAGE_EXTERNAL_STORAGE permission
+  ///
+  /// In en, this message translates to:
+  /// **'All Files Access'**
+  String get allFilesAccess;
+
+  /// Subtitle when all files access is enabled
+  ///
+  /// In en, this message translates to:
+  /// **'Can write to any folder'**
+  String get allFilesAccessEnabledSubtitle;
+
+  /// Subtitle when all files access is disabled
+  ///
+  /// In en, this message translates to:
+  /// **'Limited to media folders only'**
+  String get allFilesAccessDisabledSubtitle;
+
+  /// Description explaining when to enable all files access
+  ///
+  /// In en, this message translates to:
+  /// **'Enable this if you encounter write errors when saving to custom folders. Android 13+ restricts access to certain directories by default.'**
+  String get allFilesAccessDescription;
+
+  /// Message when permission is permanently denied
+  ///
+  /// In en, this message translates to:
+  /// **'Permission was denied. Please enable \'All files access\' manually in system settings.'**
+  String get allFilesAccessDeniedMessage;
+
+  /// Snackbar message when user disables all files access
+  ///
+  /// In en, this message translates to:
+  /// **'All Files Access disabled. The app will use limited storage access.'**
+  String get allFilesAccessDisabledMessage;
+
+  /// Settings menu item - local library
+  ///
+  /// In en, this message translates to:
+  /// **'Local Library'**
+  String get settingsLocalLibrary;
+
+  /// Subtitle for local library settings
+  ///
+  /// In en, this message translates to:
+  /// **'Scan music & detect duplicates'**
+  String get settingsLocalLibrarySubtitle;
+
+  /// Library settings page title
+  ///
+  /// In en, this message translates to:
+  /// **'Local Library'**
+  String get libraryTitle;
+
+  /// Section header for library status
+  ///
+  /// In en, this message translates to:
+  /// **'Library Status'**
+  String get libraryStatus;
+
+  /// Section header for scan settings
+  ///
+  /// In en, this message translates to:
+  /// **'Scan Settings'**
+  String get libraryScanSettings;
+
+  /// Toggle to enable library scanning
+  ///
+  /// In en, this message translates to:
+  /// **'Enable Local Library'**
+  String get libraryEnableLocalLibrary;
+
+  /// Subtitle for enable toggle
+  ///
+  /// In en, this message translates to:
+  /// **'Scan and track your existing music'**
+  String get libraryEnableLocalLibrarySubtitle;
+
+  /// Folder selection setting
+  ///
+  /// In en, this message translates to:
+  /// **'Library Folder'**
+  String get libraryFolder;
+
+  /// Placeholder when no folder selected
+  ///
+  /// In en, this message translates to:
+  /// **'Tap to select folder'**
+  String get libraryFolderHint;
+
+  /// Toggle for duplicate indicator in search
+  ///
+  /// In en, this message translates to:
+  /// **'Show Duplicate Indicator'**
+  String get libraryShowDuplicateIndicator;
+
+  /// Subtitle for duplicate indicator toggle
+  ///
+  /// In en, this message translates to:
+  /// **'Show when searching for existing tracks'**
+  String get libraryShowDuplicateIndicatorSubtitle;
+
+  /// Section header for library actions
+  ///
+  /// In en, this message translates to:
+  /// **'Actions'**
+  String get libraryActions;
+
+  /// Button to start library scan
+  ///
+  /// In en, this message translates to:
+  /// **'Scan Library'**
+  String get libraryScan;
+
+  /// Subtitle for scan button
+  ///
+  /// In en, this message translates to:
+  /// **'Scan for audio files'**
+  String get libraryScanSubtitle;
+
+  /// Message when trying to scan without folder
+  ///
+  /// In en, this message translates to:
+  /// **'Select a folder first'**
+  String get libraryScanSelectFolderFirst;
+
+  /// Button to remove entries for missing files
+  ///
+  /// In en, this message translates to:
+  /// **'Cleanup Missing Files'**
+  String get libraryCleanupMissingFiles;
+
+  /// Subtitle for cleanup button
+  ///
+  /// In en, this message translates to:
+  /// **'Remove entries for files that no longer exist'**
+  String get libraryCleanupMissingFilesSubtitle;
+
+  /// Button to clear all library entries
+  ///
+  /// In en, this message translates to:
+  /// **'Clear Library'**
+  String get libraryClear;
+
+  /// Subtitle for clear button
+  ///
+  /// In en, this message translates to:
+  /// **'Remove all scanned tracks'**
+  String get libraryClearSubtitle;
+
+  /// Dialog title for clear confirmation
+  ///
+  /// In en, this message translates to:
+  /// **'Clear Library'**
+  String get libraryClearConfirmTitle;
+
+  /// Dialog message for clear confirmation
+  ///
+  /// In en, this message translates to:
+  /// **'This will remove all scanned tracks from your library. Your actual music files will not be deleted.'**
+  String get libraryClearConfirmMessage;
+
+  /// Section header for about info
+  ///
+  /// In en, this message translates to:
+  /// **'About Local Library'**
+  String get libraryAbout;
+
+  /// Description of local library feature
+  ///
+  /// In en, this message translates to:
+  /// **'Scans your existing music collection to detect duplicates when downloading. Supports FLAC, M4A, MP3, Opus, and OGG formats. Metadata is read from file tags when available.'**
+  String get libraryAboutDescription;
+
+  /// Track count in library
+  ///
+  /// In en, this message translates to:
+  /// **'{count} tracks'**
+  String libraryTracksCount(int count);
+
+  /// Last scan time display
+  ///
+  /// In en, this message translates to:
+  /// **'Last scanned: {time}'**
+  String libraryLastScanned(String time);
+
+  /// Shown when library has never been scanned
+  ///
+  /// In en, this message translates to:
+  /// **'Never'**
+  String get libraryLastScannedNever;
+
+  /// Status during scan
+  ///
+  /// In en, this message translates to:
+  /// **'Scanning...'**
+  String get libraryScanning;
+
+  /// Scan progress display
+  ///
+  /// In en, this message translates to:
+  /// **'{progress}% of {total} files'**
+  String libraryScanProgress(String progress, int total);
+
+  /// Badge shown on tracks that exist in local library
+  ///
+  /// In en, this message translates to:
+  /// **'In Library'**
+  String get libraryInLibrary;
+
+  /// Snackbar after cleanup
+  ///
+  /// In en, this message translates to:
+  /// **'Removed {count} missing files from library'**
+  String libraryRemovedMissingFiles(int count);
+
+  /// Snackbar after clearing library
+  ///
+  /// In en, this message translates to:
+  /// **'Library cleared'**
+  String get libraryCleared;
+
+  /// Dialog title for storage permission
+  ///
+  /// In en, this message translates to:
+  /// **'Storage Access Required'**
+  String get libraryStorageAccessRequired;
+
+  /// Dialog message for storage permission
+  ///
+  /// In en, this message translates to:
+  /// **'SpotiFLAC needs storage access to scan your music library. Please grant permission in settings.'**
+  String get libraryStorageAccessMessage;
+
+  /// Error when folder doesn't exist
+  ///
+  /// In en, this message translates to:
+  /// **'Selected folder does not exist'**
+  String get libraryFolderNotExist;
+
+  /// Badge for tracks downloaded via SpotiFLAC
+  ///
+  /// In en, this message translates to:
+  /// **'Downloaded'**
+  String get librarySourceDownloaded;
+
+  /// Badge for tracks from local library scan
+  ///
+  /// In en, this message translates to:
+  /// **'Local'**
+  String get librarySourceLocal;
+
+  /// Filter chip - show all library items
+  ///
+  /// In en, this message translates to:
+  /// **'All'**
+  String get libraryFilterAll;
+
+  /// Filter chip - show only downloaded items
+  ///
+  /// In en, this message translates to:
+  /// **'Downloaded'**
+  String get libraryFilterDownloaded;
+
+  /// Filter chip - show only local library items
+  ///
+  /// In en, this message translates to:
+  /// **'Local'**
+  String get libraryFilterLocal;
+
+  /// Filter bottom sheet title
+  ///
+  /// In en, this message translates to:
+  /// **'Filters'**
+  String get libraryFilterTitle;
+
+  /// Reset all filters button
+  ///
+  /// In en, this message translates to:
+  /// **'Reset'**
+  String get libraryFilterReset;
+
+  /// Apply filters button
+  ///
+  /// In en, this message translates to:
+  /// **'Apply'**
+  String get libraryFilterApply;
+
+  /// Filter section - source type
+  ///
+  /// In en, this message translates to:
+  /// **'Source'**
+  String get libraryFilterSource;
+
+  /// Filter section - audio quality
+  ///
+  /// In en, this message translates to:
+  /// **'Quality'**
+  String get libraryFilterQuality;
+
+  /// Filter option - high resolution audio
+  ///
+  /// In en, this message translates to:
+  /// **'Hi-Res (24bit)'**
+  String get libraryFilterQualityHiRes;
+
+  /// Filter option - CD quality audio
+  ///
+  /// In en, this message translates to:
+  /// **'CD (16bit)'**
+  String get libraryFilterQualityCD;
+
+  /// Filter option - lossy compressed audio
+  ///
+  /// In en, this message translates to:
+  /// **'Lossy'**
+  String get libraryFilterQualityLossy;
+
+  /// Filter section - file format
+  ///
+  /// In en, this message translates to:
+  /// **'Format'**
+  String get libraryFilterFormat;
+
+  /// Filter section - date range
+  ///
+  /// In en, this message translates to:
+  /// **'Date Added'**
+  String get libraryFilterDate;
+
+  /// Filter option - today only
+  ///
+  /// In en, this message translates to:
+  /// **'Today'**
+  String get libraryFilterDateToday;
+
+  /// Filter option - this week
+  ///
+  /// In en, this message translates to:
+  /// **'This Week'**
+  String get libraryFilterDateWeek;
+
+  /// Filter option - this month
+  ///
+  /// In en, this message translates to:
+  /// **'This Month'**
+  String get libraryFilterDateMonth;
+
+  /// Filter option - this year
+  ///
+  /// In en, this message translates to:
+  /// **'This Year'**
+  String get libraryFilterDateYear;
+
+  /// Badge showing number of active filters
+  ///
+  /// In en, this message translates to:
+  /// **'{count} filter(s) active'**
+  String libraryFilterActive(int count);
+
+  /// Relative time - less than a minute ago
+  ///
+  /// In en, this message translates to:
+  /// **'Just now'**
+  String get timeJustNow;
+
+  /// Relative time - minutes ago
+  ///
+  /// In en, this message translates to:
+  /// **'{count, plural, =1{1 minute ago} other{{count} minutes ago}}'**
+  String timeMinutesAgo(int count);
+
+  /// Relative time - hours ago
+  ///
+  /// In en, this message translates to:
+  /// **'{count, plural, =1{1 hour ago} other{{count} hours ago}}'**
+  String timeHoursAgo(int count);
 }
 
 class _AppLocalizationsDelegate

lib/l10n/app_localizations_de.dart

@@ -18,6 +18,9 @@ class AppLocalizationsDe extends AppLocalizations {
   @override
   String get navHome => 'Startseite';
 
+  @override
+  String get navLibrary => 'Library';
+
   @override
   String get navHistory => 'Verlauf';
 
@@ -112,7 +115,7 @@ class AppLocalizationsDe extends AppLocalizations {
       'Einzelne Titel-Downloads werden hier angezeigt';
 
   @override
-  String get historySearchHint => 'Search history...';
+  String get historySearchHint => 'Suchverlauf...';
 
   @override
   String get settingsTitle => 'Einstellungen';
@@ -416,7 +419,7 @@ class AppLocalizationsDe extends AppLocalizations {
       'Der talentierte Künstler, der unser wunderschönes App-Logo entworfen hat!';
 
   @override
-  String get aboutTranslators => 'Translators';
+  String get aboutTranslators => 'Übersetzer';
 
   @override
   String get aboutSpecialThanks => 'Besonderer Dank';
@@ -445,19 +448,19 @@ class AppLocalizationsDe extends AppLocalizations {
       'Schlage neue Funktionen für die App vor';
 
   @override
-  String get aboutTelegramChannel => 'Telegram Channel';
+  String get aboutTelegramChannel => 'Telegram Kanal';
 
   @override
-  String get aboutTelegramChannelSubtitle => 'Announcements and updates';
+  String get aboutTelegramChannelSubtitle => 'Ankündigungen und Updates';
 
   @override
   String get aboutTelegramChat => 'Telegram Community';
 
   @override
-  String get aboutTelegramChatSubtitle => 'Chat with other users';
+  String get aboutTelegramChatSubtitle => 'Mit anderen Nutzern chatten';
 
   @override
-  String get aboutSocial => 'Social';
+  String get aboutSocial => 'Sozial';
 
   @override
   String get aboutSupport => 'Support';
@@ -483,6 +486,10 @@ class AppLocalizationsDe extends AppLocalizations {
   String get aboutSachinsenalDesc =>
       'Der ursprüngliche Entwickler des HiFi-Projekts. Die Grundlage der Tidal-Integration!';
 
+  @override
+  String get aboutSjdonadoDesc =>
+      'Creator of I Don\'t Have Spotify (IDHS). The fallback link resolver that saves the day!';
+
   @override
   String get aboutDoubleDouble => 'DoubleDouble';
 
@@ -499,7 +506,7 @@ class AppLocalizationsDe extends AppLocalizations {
 
   @override
   String get aboutAppDescription =>
-      'Download Spotify tracks in lossless quality from Tidal, Qobuz, and Amazon Music.';
+      'Lade Spotify-Titel in verlustfreier Qualität von Tidal, Qobuz und Amazon Music herunter.';
 
   @override
   String get albumTitle => 'Album';
@@ -509,246 +516,252 @@ class AppLocalizationsDe extends AppLocalizations {
     String _temp0 = intl.Intl.pluralLogic(
       count,
       locale: localeName,
-      other: '$count tracks',
-      one: '1 track',
+      other: '$count Songs',
+      one: '1 Song',
     );
     return '$_temp0';
   }
 
   @override
-  String get albumDownloadAll => 'Download All';
+  String get albumDownloadAll => 'Alle Herunterladen';
 
   @override
-  String get albumDownloadRemaining => 'Download Remaining';
+  String get albumDownloadRemaining => 'Downloads verbleibend';
 
   @override
   String get playlistTitle => 'Playlist';
 
   @override
-  String get artistTitle => 'Artist';
+  String get artistTitle => 'Künstler';
 
   @override
-  String get artistAlbums => 'Albums';
+  String get artistAlbums => 'Alben';
 
   @override
   String get artistSingles => 'Singles & EPs';
 
   @override
-  String get artistCompilations => 'Compilations';
+  String get artistCompilations => 'Zusammenstellungen';
 
   @override
   String artistReleases(int count) {
     String _temp0 = intl.Intl.pluralLogic(
       count,
       locale: localeName,
-      other: '$count releases',
-      one: '1 release',
+      other: '$count Veröffentlichungen',
+      one: '1 Veröffentlichung',
     );
     return '$_temp0';
   }
 
   @override
-  String get artistPopular => 'Popular';
+  String get artistPopular => 'Beliebt';
 
   @override
   String artistMonthlyListeners(String count) {
-    return '$count monthly listeners';
+    return '$count monatliche Hörer';
   }
 
   @override
-  String get trackMetadataTitle => 'Track Info';
+  String get trackMetadataTitle => 'Titel Info';
 
   @override
-  String get trackMetadataArtist => 'Artist';
+  String get trackMetadataArtist => 'Künstler';
 
   @override
   String get trackMetadataAlbum => 'Album';
 
   @override
-  String get trackMetadataDuration => 'Duration';
+  String get trackMetadataDuration => 'Länge';
 
   @override
-  String get trackMetadataQuality => 'Quality';
+  String get trackMetadataQuality => 'Qualität';
 
   @override
-  String get trackMetadataPath => 'File Path';
+  String get trackMetadataPath => 'Dateipfad';
 
   @override
-  String get trackMetadataDownloadedAt => 'Downloaded';
+  String get trackMetadataDownloadedAt => 'Heruntergeladen';
 
   @override
-  String get trackMetadataService => 'Service';
+  String get trackMetadataService => 'Anbieter';
 
   @override
-  String get trackMetadataPlay => 'Play';
+  String get trackMetadataPlay => 'Abspielen';
 
   @override
-  String get trackMetadataShare => 'Share';
+  String get trackMetadataShare => 'Teilen';
 
   @override
-  String get trackMetadataDelete => 'Delete';
+  String get trackMetadataDelete => 'Löschen';
 
   @override
-  String get trackMetadataRedownload => 'Re-download';
+  String get trackMetadataRedownload => 'Erneut herunterladen';
 
   @override
-  String get trackMetadataOpenFolder => 'Open Folder';
+  String get trackMetadataOpenFolder => 'Ordner öffnen';
 
   @override
-  String get setupTitle => 'Welcome to SpotiFLAC';
+  String get setupTitle => 'Willkommen bei SpotiFLAC';
 
   @override
-  String get setupSubtitle => 'Let\'s get you started';
+  String get setupSubtitle => 'Los geht\'s';
 
   @override
-  String get setupStoragePermission => 'Storage Permission';
+  String get setupStoragePermission => 'Speicherberechtigung';
 
   @override
   String get setupStoragePermissionSubtitle =>
-      'Required to save downloaded files';
+      'Benötigt um heruntergeladene Dateien zu Speichern';
 
   @override
-  String get setupStoragePermissionGranted => 'Permission granted';
+  String get setupStoragePermissionGranted => 'Berechtigung erteilt';
 
   @override
-  String get setupStoragePermissionDenied => 'Permission denied';
+  String get setupStoragePermissionDenied => 'Berechtigung verweigert';
 
   @override
-  String get setupGrantPermission => 'Grant Permission';
+  String get setupGrantPermission => 'Berechtigung erlauben';
 
   @override
-  String get setupDownloadLocation => 'Download Location';
+  String get setupDownloadLocation => 'Speicherort';
 
   @override
-  String get setupChooseFolder => 'Choose Folder';
+  String get setupChooseFolder => 'Ordner wählen';
 
   @override
-  String get setupContinue => 'Continue';
+  String get setupContinue => 'Fortfahren';
 
   @override
-  String get setupSkip => 'Skip for now';
+  String get setupSkip => 'Vorerst überspringen';
 
   @override
-  String get setupStorageAccessRequired => 'Storage Access Required';
+  String get setupStorageAccessRequired => 'Speicherzugriff erforderlich';
 
   @override
   String get setupStorageAccessMessage =>
-      'SpotiFLAC needs \"All files access\" permission to save music files to your chosen folder.';
+      'SpotiFLAC benötigt die Berechtigung \"Auf alle Dateien zugreifen\", um Musikdateien in deinen gewählten Ordner zu speichern.';
 
   @override
   String get setupStorageAccessMessageAndroid11 =>
-      'Android 11+ requires \"All files access\" permission to save files to your chosen download folder.';
+      'Android 11+ benötigt die Berechtigung „Auf alle Dateien“, um Dateien im ausgewählten Download-Ordner zu speichern.';
 
   @override
-  String get setupOpenSettings => 'Open Settings';
+  String get setupOpenSettings => 'Einstellungen öffnen';
 
   @override
   String get setupPermissionDeniedMessage =>
-      'Permission denied. Please grant all permissions to continue.';
+      'Berechtigung verweigert. Bitte erteilen Sie alle Berechtigungen um fortzufahren.';
 
   @override
   String setupPermissionRequired(String permissionType) {
-    return '$permissionType Permission Required';
+    return '$permissionType Zugriff verweigert';
   }
 
   @override
   String setupPermissionRequiredMessage(String permissionType) {
-    return '$permissionType permission is required for the best experience. You can change this later in Settings.';
+    return '$permissionType Berechtigung ist erforderlich für\ndie beste Benutzererfahrung. Für kannst dies später in den Einstellungen ändern.';
   }
 
   @override
-  String get setupSelectDownloadFolder => 'Select Download Folder';
+  String get setupSelectDownloadFolder => 'Wähle Download-Ordner aus';
 
   @override
-  String get setupUseDefaultFolder => 'Use Default Folder?';
+  String get setupUseDefaultFolder => 'Als Standardordner verwenden?';
 
   @override
   String get setupNoFolderSelected =>
-      'No folder selected. Would you like to use the default Music folder?';
+      'Kein Ordner ausgewählt. Soll der Standard-Musikordner verwendet werden?';
 
   @override
-  String get setupUseDefault => 'Use Default';
+  String get setupUseDefault => 'Standart benutzen';
 
   @override
-  String get setupDownloadLocationTitle => 'Download Location';
+  String get setupDownloadLocationTitle => 'Speicherort';
 
   @override
   String get setupDownloadLocationIosMessage =>
-      'On iOS, downloads are saved to the app\'s Documents folder. You can access them via the Files app.';
+      'Auf iOS werden Downloads im Dokumentenverzeichnis der App gespeichert. Sie können sie über die Datei-App aufrufen.';
 
   @override
-  String get setupAppDocumentsFolder => 'App Documents Folder';
+  String get setupAppDocumentsFolder => 'App-Dokumentenordner';
 
   @override
   String get setupAppDocumentsFolderSubtitle =>
-      'Recommended - accessible via Files app';
+      'Empfohlen - zugänglich über die Datei-App';
 
   @override
-  String get setupChooseFromFiles => 'Choose from Files';
+  String get setupChooseFromFiles => 'Aus Dateien auswählen';
 
   @override
-  String get setupChooseFromFilesSubtitle => 'Select iCloud or other location';
+  String get setupChooseFromFilesSubtitle =>
+      'Wählen Sie iCloud oder einen anderen Ort';
 
   @override
   String get setupIosEmptyFolderWarning =>
-      'iOS limitation: Empty folders cannot be selected. Choose a folder with at least one file.';
+      'iOS-Einschränkung: Leere Ordner können nicht ausgewählt werden. Wählen Sie einen Ordner mit mindestens einer Datei.';
 
   @override
-  String get setupDownloadInFlac => 'Download Spotify tracks in FLAC';
+  String get setupIcloudNotSupported =>
+      'iCloud Drive is not supported. Please use the app Documents folder.';
 
   @override
-  String get setupStepStorage => 'Storage';
+  String get setupDownloadInFlac => 'Spotify Titel in FLAC herunterladen';
 
   @override
-  String get setupStepNotification => 'Notification';
+  String get setupStepStorage => 'Speicherort';
 
   @override
-  String get setupStepFolder => 'Folder';
+  String get setupStepNotification => 'Benachrichtigung';
+
+  @override
+  String get setupStepFolder => 'Ordner';
 
   @override
   String get setupStepSpotify => 'Spotify';
 
   @override
-  String get setupStepPermission => 'Permission';
+  String get setupStepPermission => 'Berechtigung';
 
   @override
-  String get setupStorageGranted => 'Storage Permission Granted!';
+  String get setupStorageGranted => 'Speicherberechtigung erlaubt!';
 
   @override
-  String get setupStorageRequired => 'Storage Permission Required';
+  String get setupStorageRequired => 'Speicherzugriff erforderlich';
 
   @override
   String get setupStorageDescription =>
-      'SpotiFLAC needs storage permission to save your downloaded music files.';
+      'SpotiFLAC benötigt Speicherrechte, um die heruntergeladenen Musikdateien zu speichern.';
 
   @override
-  String get setupNotificationGranted => 'Notification Permission Granted!';
+  String get setupNotificationGranted =>
+      'Benachrichtigungs-Berechtigung erteilt';
 
   @override
-  String get setupNotificationEnable => 'Enable Notifications';
+  String get setupNotificationEnable => 'Benachrichtigungen aktivieren';
 
   @override
   String get setupNotificationDescription =>
-      'Get notified when downloads complete or require attention.';
+      'Benachrichtigt werden, wenn Downloads abgeschlossen sind.';
 
   @override
-  String get setupFolderSelected => 'Download Folder Selected!';
+  String get setupFolderSelected => 'Download Ordner ausgewählt!';
 
   @override
-  String get setupFolderChoose => 'Choose Download Folder';
+  String get setupFolderChoose => 'Speicherort auwählen';
 
   @override
   String get setupFolderDescription =>
-      'Select a folder where your downloaded music will be saved.';
+      'Wählen Sie einen Ordner, in dem Ihre heruntergeladene Musik gespeichert wird.';
 
   @override
-  String get setupChangeFolder => 'Change Folder';
+  String get setupChangeFolder => 'Ordner ändern';
 
   @override
-  String get setupSelectFolder => 'Select Folder';
+  String get setupSelectFolder => 'Ordner wählen';
 
   @override
-  String get setupSpotifyApiOptional => 'Spotify API (Optional)';
+  String get setupSpotifyApiOptional => 'Spotify-API (optional)';
 
   @override
   String get setupSpotifyApiDescription =>
@@ -948,6 +961,11 @@ class AppLocalizationsDe extends AppLocalizations {
     return '\"$trackName\" already downloaded';
   }
 
+  @override
+  String snackbarAlreadyInLibrary(String trackName) {
+    return '\"$trackName\" already exists in your library';
+  }
+
   @override
   String get snackbarHistoryCleared => 'History cleared';
 
@@ -1631,6 +1649,15 @@ class AppLocalizationsDe extends AppLocalizations {
   @override
   String get trackLyricsLoadFailed => 'Failed to load lyrics';
 
+  @override
+  String get trackEmbedLyrics => 'Embed Lyrics';
+
+  @override
+  String get trackLyricsEmbedded => 'Lyrics embedded successfully';
+
+  @override
+  String get trackInstrumental => 'Instrumental track';
+
   @override
   String get trackCopiedToClipboard => 'Copied to clipboard';
 
@@ -1860,20 +1887,36 @@ class AppLocalizationsDe extends AppLocalizations {
   String get qualityHiResFlacMaxSubtitle => '24-bit / up to 192kHz';
 
   @override
-  String get qualityMp3 => 'MP3';
+  String get qualityLossy => 'Lossy';
 
   @override
-  String get qualityMp3Subtitle => '320kbps (converted from FLAC)';
+  String get qualityLossyMp3Subtitle => 'MP3 320kbps (converted from FLAC)';
 
   @override
-  String get enableMp3Option => 'Enable MP3 Option';
+  String get qualityLossyOpusSubtitle => 'Opus 128kbps (converted from FLAC)';
 
   @override
-  String get enableMp3OptionSubtitleOn => 'MP3 quality option is available';
+  String get enableLossyOption => 'Enable Lossy Option';
 
   @override
-  String get enableMp3OptionSubtitleOff =>
-      'Downloads FLAC then converts to 320kbps MP3';
+  String get enableLossyOptionSubtitleOn => 'Lossy quality option is available';
+
+  @override
+  String get enableLossyOptionSubtitleOff =>
+      'Downloads FLAC then converts to lossy format';
+
+  @override
+  String get lossyFormat => 'Lossy Format';
+
+  @override
+  String get lossyFormatDescription => 'Choose the lossy format for conversion';
+
+  @override
+  String get lossyFormatMp3Subtitle => '320kbps, best compatibility';
+
+  @override
+  String get lossyFormatOpusSubtitle =>
+      '128kbps, better quality at smaller size';
 
   @override
   String get qualityNote =>
@@ -1970,6 +2013,39 @@ class AppLocalizationsDe extends AppLocalizations {
   String get queueClearAllMessage =>
       'Are you sure you want to clear all downloads?';
 
+  @override
+  String get queueExportFailed => 'Export';
+
+  @override
+  String get queueExportFailedSuccess =>
+      'Failed downloads exported to TXT file';
+
+  @override
+  String get queueExportFailedClear => 'Clear Failed';
+
+  @override
+  String get queueExportFailedError => 'Failed to export downloads';
+
+  @override
+  String get settingsAutoExportFailed => 'Auto-export failed downloads';
+
+  @override
+  String get settingsAutoExportFailedSubtitle =>
+      'Save failed downloads to TXT file automatically';
+
+  @override
+  String get settingsDownloadNetwork => 'Download Network';
+
+  @override
+  String get settingsDownloadNetworkAny => 'WiFi + Mobile Data';
+
+  @override
+  String get settingsDownloadNetworkWifiOnly => 'WiFi Only';
+
+  @override
+  String get settingsDownloadNetworkSubtitle =>
+      'Choose which network to use for downloads. When set to WiFi Only, downloads will pause on mobile data.';
+
   @override
   String get queueEmpty => 'No downloads in queue';
 
@@ -2019,6 +2095,13 @@ class AppLocalizationsDe extends AppLocalizations {
   @override
   String get albumFolderYearAlbumSubtitle => 'Albums/[2005] Album Name/';
 
+  @override
+  String get albumFolderArtistAlbumSingles => 'Artist / Album + Singles';
+
+  @override
+  String get albumFolderArtistAlbumSinglesSubtitle =>
+      'Artist/Album/ and Artist/Singles/';
+
   @override
   String get downloadedAlbumDeleteSelected => 'Delete Selected';
 
@@ -2161,4 +2244,231 @@ class AppLocalizationsDe extends AppLocalizations {
 
   @override
   String get discographyFailedToFetch => 'Failed to fetch some albums';
+
+  @override
+  String get sectionStorageAccess => 'Storage Access';
+
+  @override
+  String get allFilesAccess => 'All Files Access';
+
+  @override
+  String get allFilesAccessEnabledSubtitle => 'Can write to any folder';
+
+  @override
+  String get allFilesAccessDisabledSubtitle => 'Limited to media folders only';
+
+  @override
+  String get allFilesAccessDescription =>
+      'Enable this if you encounter write errors when saving to custom folders. Android 13+ restricts access to certain directories by default.';
+
+  @override
+  String get allFilesAccessDeniedMessage =>
+      'Permission was denied. Please enable \'All files access\' manually in system settings.';
+
+  @override
+  String get allFilesAccessDisabledMessage =>
+      'All Files Access disabled. The app will use limited storage access.';
+
+  @override
+  String get settingsLocalLibrary => 'Local Library';
+
+  @override
+  String get settingsLocalLibrarySubtitle => 'Scan music & detect duplicates';
+
+  @override
+  String get libraryTitle => 'Local Library';
+
+  @override
+  String get libraryStatus => 'Library Status';
+
+  @override
+  String get libraryScanSettings => 'Scan Settings';
+
+  @override
+  String get libraryEnableLocalLibrary => 'Enable Local Library';
+
+  @override
+  String get libraryEnableLocalLibrarySubtitle =>
+      'Scan and track your existing music';
+
+  @override
+  String get libraryFolder => 'Library Folder';
+
+  @override
+  String get libraryFolderHint => 'Tap to select folder';
+
+  @override
+  String get libraryShowDuplicateIndicator => 'Show Duplicate Indicator';
+
+  @override
+  String get libraryShowDuplicateIndicatorSubtitle =>
+      'Show when searching for existing tracks';
+
+  @override
+  String get libraryActions => 'Actions';
+
+  @override
+  String get libraryScan => 'Scan Library';
+
+  @override
+  String get libraryScanSubtitle => 'Scan for audio files';
+
+  @override
+  String get libraryScanSelectFolderFirst => 'Select a folder first';
+
+  @override
+  String get libraryCleanupMissingFiles => 'Cleanup Missing Files';
+
+  @override
+  String get libraryCleanupMissingFilesSubtitle =>
+      'Remove entries for files that no longer exist';
+
+  @override
+  String get libraryClear => 'Clear Library';
+
+  @override
+  String get libraryClearSubtitle => 'Remove all scanned tracks';
+
+  @override
+  String get libraryClearConfirmTitle => 'Clear Library';
+
+  @override
+  String get libraryClearConfirmMessage =>
+      'This will remove all scanned tracks from your library. Your actual music files will not be deleted.';
+
+  @override
+  String get libraryAbout => 'About Local Library';
+
+  @override
+  String get libraryAboutDescription =>
+      'Scans your existing music collection to detect duplicates when downloading. Supports FLAC, M4A, MP3, Opus, and OGG formats. Metadata is read from file tags when available.';
+
+  @override
+  String libraryTracksCount(int count) {
+    return '$count tracks';
+  }
+
+  @override
+  String libraryLastScanned(String time) {
+    return 'Last scanned: $time';
+  }
+
+  @override
+  String get libraryLastScannedNever => 'Never';
+
+  @override
+  String get libraryScanning => 'Scanning...';
+
+  @override
+  String libraryScanProgress(String progress, int total) {
+    return '$progress% of $total files';
+  }
+
+  @override
+  String get libraryInLibrary => 'In Library';
+
+  @override
+  String libraryRemovedMissingFiles(int count) {
+    return 'Removed $count missing files from library';
+  }
+
+  @override
+  String get libraryCleared => 'Library cleared';
+
+  @override
+  String get libraryStorageAccessRequired => 'Storage Access Required';
+
+  @override
+  String get libraryStorageAccessMessage =>
+      'SpotiFLAC needs storage access to scan your music library. Please grant permission in settings.';
+
+  @override
+  String get libraryFolderNotExist => 'Selected folder does not exist';
+
+  @override
+  String get librarySourceDownloaded => 'Downloaded';
+
+  @override
+  String get librarySourceLocal => 'Local';
+
+  @override
+  String get libraryFilterAll => 'All';
+
+  @override
+  String get libraryFilterDownloaded => 'Downloaded';
+
+  @override
+  String get libraryFilterLocal => 'Local';
+
+  @override
+  String get libraryFilterTitle => 'Filters';
+
+  @override
+  String get libraryFilterReset => 'Reset';
+
+  @override
+  String get libraryFilterApply => 'Apply';
+
+  @override
+  String get libraryFilterSource => 'Source';
+
+  @override
+  String get libraryFilterQuality => 'Quality';
+
+  @override
+  String get libraryFilterQualityHiRes => 'Hi-Res (24bit)';
+
+  @override
+  String get libraryFilterQualityCD => 'CD (16bit)';
+
+  @override
+  String get libraryFilterQualityLossy => 'Lossy';
+
+  @override
+  String get libraryFilterFormat => 'Format';
+
+  @override
+  String get libraryFilterDate => 'Date Added';
+
+  @override
+  String get libraryFilterDateToday => 'Today';
+
+  @override
+  String get libraryFilterDateWeek => 'This Week';
+
+  @override
+  String get libraryFilterDateMonth => 'This Month';
+
+  @override
+  String get libraryFilterDateYear => 'This Year';
+
+  @override
+  String libraryFilterActive(int count) {
+    return '$count filter(s) active';
+  }
+
+  @override
+  String get timeJustNow => 'Just now';
+
+  @override
+  String timeMinutesAgo(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count minutes ago',
+      one: '1 minute ago',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String timeHoursAgo(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count hours ago',
+      one: '1 hour ago',
+    );
+    return '$_temp0';
+  }
 }

lib/l10n/app_localizations_en.dart

@@ -18,6 +18,9 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get navHome => 'Home';
 
+  @override
+  String get navLibrary => 'Library';
+
   @override
   String get navHistory => 'History';
 
@@ -470,6 +473,10 @@ class AppLocalizationsEn extends AppLocalizations {
   String get aboutSachinsenalDesc =>
       'The original HiFi project creator. The foundation of Tidal integration!';
 
+  @override
+  String get aboutSjdonadoDesc =>
+      'Creator of I Don\'t Have Spotify (IDHS). The fallback link resolver that saves the day!';
+
   @override
   String get aboutDoubleDouble => 'DoubleDouble';
 
@@ -680,6 +687,10 @@ class AppLocalizationsEn extends AppLocalizations {
   String get setupIosEmptyFolderWarning =>
       'iOS limitation: Empty folders cannot be selected. Choose a folder with at least one file.';
 
+  @override
+  String get setupIcloudNotSupported =>
+      'iCloud Drive is not supported. Please use the app Documents folder.';
+
   @override
   String get setupDownloadInFlac => 'Download Spotify tracks in FLAC';
 
@@ -935,6 +946,11 @@ class AppLocalizationsEn extends AppLocalizations {
     return '\"$trackName\" already downloaded';
   }
 
+  @override
+  String snackbarAlreadyInLibrary(String trackName) {
+    return '\"$trackName\" already exists in your library';
+  }
+
   @override
   String get snackbarHistoryCleared => 'History cleared';
 
@@ -1618,6 +1634,15 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get trackLyricsLoadFailed => 'Failed to load lyrics';
 
+  @override
+  String get trackEmbedLyrics => 'Embed Lyrics';
+
+  @override
+  String get trackLyricsEmbedded => 'Lyrics embedded successfully';
+
+  @override
+  String get trackInstrumental => 'Instrumental track';
+
   @override
   String get trackCopiedToClipboard => 'Copied to clipboard';
 
@@ -1847,20 +1872,36 @@ class AppLocalizationsEn extends AppLocalizations {
   String get qualityHiResFlacMaxSubtitle => '24-bit / up to 192kHz';
 
   @override
-  String get qualityMp3 => 'MP3';
+  String get qualityLossy => 'Lossy';
 
   @override
-  String get qualityMp3Subtitle => '320kbps (converted from FLAC)';
+  String get qualityLossyMp3Subtitle => 'MP3 320kbps (converted from FLAC)';
 
   @override
-  String get enableMp3Option => 'Enable MP3 Option';
+  String get qualityLossyOpusSubtitle => 'Opus 128kbps (converted from FLAC)';
 
   @override
-  String get enableMp3OptionSubtitleOn => 'MP3 quality option is available';
+  String get enableLossyOption => 'Enable Lossy Option';
 
   @override
-  String get enableMp3OptionSubtitleOff =>
-      'Downloads FLAC then converts to 320kbps MP3';
+  String get enableLossyOptionSubtitleOn => 'Lossy quality option is available';
+
+  @override
+  String get enableLossyOptionSubtitleOff =>
+      'Downloads FLAC then converts to lossy format';
+
+  @override
+  String get lossyFormat => 'Lossy Format';
+
+  @override
+  String get lossyFormatDescription => 'Choose the lossy format for conversion';
+
+  @override
+  String get lossyFormatMp3Subtitle => '320kbps, best compatibility';
+
+  @override
+  String get lossyFormatOpusSubtitle =>
+      '128kbps, better quality at smaller size';
 
   @override
   String get qualityNote =>
@@ -1957,6 +1998,39 @@ class AppLocalizationsEn extends AppLocalizations {
   String get queueClearAllMessage =>
       'Are you sure you want to clear all downloads?';
 
+  @override
+  String get queueExportFailed => 'Export';
+
+  @override
+  String get queueExportFailedSuccess =>
+      'Failed downloads exported to TXT file';
+
+  @override
+  String get queueExportFailedClear => 'Clear Failed';
+
+  @override
+  String get queueExportFailedError => 'Failed to export downloads';
+
+  @override
+  String get settingsAutoExportFailed => 'Auto-export failed downloads';
+
+  @override
+  String get settingsAutoExportFailedSubtitle =>
+      'Save failed downloads to TXT file automatically';
+
+  @override
+  String get settingsDownloadNetwork => 'Download Network';
+
+  @override
+  String get settingsDownloadNetworkAny => 'WiFi + Mobile Data';
+
+  @override
+  String get settingsDownloadNetworkWifiOnly => 'WiFi Only';
+
+  @override
+  String get settingsDownloadNetworkSubtitle =>
+      'Choose which network to use for downloads. When set to WiFi Only, downloads will pause on mobile data.';
+
   @override
   String get queueEmpty => 'No downloads in queue';
 
@@ -2006,6 +2080,13 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get albumFolderYearAlbumSubtitle => 'Albums/[2005] Album Name/';
 
+  @override
+  String get albumFolderArtistAlbumSingles => 'Artist / Album + Singles';
+
+  @override
+  String get albumFolderArtistAlbumSinglesSubtitle =>
+      'Artist/Album/ and Artist/Singles/';
+
   @override
   String get downloadedAlbumDeleteSelected => 'Delete Selected';
 
@@ -2148,4 +2229,231 @@ class AppLocalizationsEn extends AppLocalizations {
 
   @override
   String get discographyFailedToFetch => 'Failed to fetch some albums';
+
+  @override
+  String get sectionStorageAccess => 'Storage Access';
+
+  @override
+  String get allFilesAccess => 'All Files Access';
+
+  @override
+  String get allFilesAccessEnabledSubtitle => 'Can write to any folder';
+
+  @override
+  String get allFilesAccessDisabledSubtitle => 'Limited to media folders only';
+
+  @override
+  String get allFilesAccessDescription =>
+      'Enable this if you encounter write errors when saving to custom folders. Android 13+ restricts access to certain directories by default.';
+
+  @override
+  String get allFilesAccessDeniedMessage =>
+      'Permission was denied. Please enable \'All files access\' manually in system settings.';
+
+  @override
+  String get allFilesAccessDisabledMessage =>
+      'All Files Access disabled. The app will use limited storage access.';
+
+  @override
+  String get settingsLocalLibrary => 'Local Library';
+
+  @override
+  String get settingsLocalLibrarySubtitle => 'Scan music & detect duplicates';
+
+  @override
+  String get libraryTitle => 'Local Library';
+
+  @override
+  String get libraryStatus => 'Library Status';
+
+  @override
+  String get libraryScanSettings => 'Scan Settings';
+
+  @override
+  String get libraryEnableLocalLibrary => 'Enable Local Library';
+
+  @override
+  String get libraryEnableLocalLibrarySubtitle =>
+      'Scan and track your existing music';
+
+  @override
+  String get libraryFolder => 'Library Folder';
+
+  @override
+  String get libraryFolderHint => 'Tap to select folder';
+
+  @override
+  String get libraryShowDuplicateIndicator => 'Show Duplicate Indicator';
+
+  @override
+  String get libraryShowDuplicateIndicatorSubtitle =>
+      'Show when searching for existing tracks';
+
+  @override
+  String get libraryActions => 'Actions';
+
+  @override
+  String get libraryScan => 'Scan Library';
+
+  @override
+  String get libraryScanSubtitle => 'Scan for audio files';
+
+  @override
+  String get libraryScanSelectFolderFirst => 'Select a folder first';
+
+  @override
+  String get libraryCleanupMissingFiles => 'Cleanup Missing Files';
+
+  @override
+  String get libraryCleanupMissingFilesSubtitle =>
+      'Remove entries for files that no longer exist';
+
+  @override
+  String get libraryClear => 'Clear Library';
+
+  @override
+  String get libraryClearSubtitle => 'Remove all scanned tracks';
+
+  @override
+  String get libraryClearConfirmTitle => 'Clear Library';
+
+  @override
+  String get libraryClearConfirmMessage =>
+      'This will remove all scanned tracks from your library. Your actual music files will not be deleted.';
+
+  @override
+  String get libraryAbout => 'About Local Library';
+
+  @override
+  String get libraryAboutDescription =>
+      'Scans your existing music collection to detect duplicates when downloading. Supports FLAC, M4A, MP3, Opus, and OGG formats. Metadata is read from file tags when available.';
+
+  @override
+  String libraryTracksCount(int count) {
+    return '$count tracks';
+  }
+
+  @override
+  String libraryLastScanned(String time) {
+    return 'Last scanned: $time';
+  }
+
+  @override
+  String get libraryLastScannedNever => 'Never';
+
+  @override
+  String get libraryScanning => 'Scanning...';
+
+  @override
+  String libraryScanProgress(String progress, int total) {
+    return '$progress% of $total files';
+  }
+
+  @override
+  String get libraryInLibrary => 'In Library';
+
+  @override
+  String libraryRemovedMissingFiles(int count) {
+    return 'Removed $count missing files from library';
+  }
+
+  @override
+  String get libraryCleared => 'Library cleared';
+
+  @override
+  String get libraryStorageAccessRequired => 'Storage Access Required';
+
+  @override
+  String get libraryStorageAccessMessage =>
+      'SpotiFLAC needs storage access to scan your music library. Please grant permission in settings.';
+
+  @override
+  String get libraryFolderNotExist => 'Selected folder does not exist';
+
+  @override
+  String get librarySourceDownloaded => 'Downloaded';
+
+  @override
+  String get librarySourceLocal => 'Local';
+
+  @override
+  String get libraryFilterAll => 'All';
+
+  @override
+  String get libraryFilterDownloaded => 'Downloaded';
+
+  @override
+  String get libraryFilterLocal => 'Local';
+
+  @override
+  String get libraryFilterTitle => 'Filters';
+
+  @override
+  String get libraryFilterReset => 'Reset';
+
+  @override
+  String get libraryFilterApply => 'Apply';
+
+  @override
+  String get libraryFilterSource => 'Source';
+
+  @override
+  String get libraryFilterQuality => 'Quality';
+
+  @override
+  String get libraryFilterQualityHiRes => 'Hi-Res (24bit)';
+
+  @override
+  String get libraryFilterQualityCD => 'CD (16bit)';
+
+  @override
+  String get libraryFilterQualityLossy => 'Lossy';
+
+  @override
+  String get libraryFilterFormat => 'Format';
+
+  @override
+  String get libraryFilterDate => 'Date Added';
+
+  @override
+  String get libraryFilterDateToday => 'Today';
+
+  @override
+  String get libraryFilterDateWeek => 'This Week';
+
+  @override
+  String get libraryFilterDateMonth => 'This Month';
+
+  @override
+  String get libraryFilterDateYear => 'This Year';
+
+  @override
+  String libraryFilterActive(int count) {
+    return '$count filter(s) active';
+  }
+
+  @override
+  String get timeJustNow => 'Just now';
+
+  @override
+  String timeMinutesAgo(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count minutes ago',
+      one: '1 minute ago',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String timeHoursAgo(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count hours ago',
+      one: '1 hour ago',
+    );
+    return '$_temp0';
+  }
 }

lib/l10n/app_localizations_es.dart

@@ -18,6 +18,9 @@ class AppLocalizationsEs extends AppLocalizations {
   @override
   String get navHome => 'Home';
 
+  @override
+  String get navLibrary => 'Library';
+
   @override
   String get navHistory => 'History';
 
@@ -470,6 +473,10 @@ class AppLocalizationsEs extends AppLocalizations {
   String get aboutSachinsenalDesc =>
       'The original HiFi project creator. The foundation of Tidal integration!';
 
+  @override
+  String get aboutSjdonadoDesc =>
+      'Creator of I Don\'t Have Spotify (IDHS). The fallback link resolver that saves the day!';
+
   @override
   String get aboutDoubleDouble => 'DoubleDouble';
 
@@ -680,6 +687,10 @@ class AppLocalizationsEs extends AppLocalizations {
   String get setupIosEmptyFolderWarning =>
       'iOS limitation: Empty folders cannot be selected. Choose a folder with at least one file.';
 
+  @override
+  String get setupIcloudNotSupported =>
+      'iCloud Drive is not supported. Please use the app Documents folder.';
+
   @override
   String get setupDownloadInFlac => 'Download Spotify tracks in FLAC';
 
@@ -935,6 +946,11 @@ class AppLocalizationsEs extends AppLocalizations {
     return '\"$trackName\" already downloaded';
   }
 
+  @override
+  String snackbarAlreadyInLibrary(String trackName) {
+    return '\"$trackName\" already exists in your library';
+  }
+
   @override
   String get snackbarHistoryCleared => 'History cleared';
 
@@ -1618,6 +1634,15 @@ class AppLocalizationsEs extends AppLocalizations {
   @override
   String get trackLyricsLoadFailed => 'Failed to load lyrics';
 
+  @override
+  String get trackEmbedLyrics => 'Embed Lyrics';
+
+  @override
+  String get trackLyricsEmbedded => 'Lyrics embedded successfully';
+
+  @override
+  String get trackInstrumental => 'Instrumental track';
+
   @override
   String get trackCopiedToClipboard => 'Copied to clipboard';
 
@@ -1847,20 +1872,36 @@ class AppLocalizationsEs extends AppLocalizations {
   String get qualityHiResFlacMaxSubtitle => '24-bit / up to 192kHz';
 
   @override
-  String get qualityMp3 => 'MP3';
+  String get qualityLossy => 'Lossy';
 
   @override
-  String get qualityMp3Subtitle => '320kbps (converted from FLAC)';
+  String get qualityLossyMp3Subtitle => 'MP3 320kbps (converted from FLAC)';
 
   @override
-  String get enableMp3Option => 'Enable MP3 Option';
+  String get qualityLossyOpusSubtitle => 'Opus 128kbps (converted from FLAC)';
 
   @override
-  String get enableMp3OptionSubtitleOn => 'MP3 quality option is available';
+  String get enableLossyOption => 'Enable Lossy Option';
 
   @override
-  String get enableMp3OptionSubtitleOff =>
-      'Downloads FLAC then converts to 320kbps MP3';
+  String get enableLossyOptionSubtitleOn => 'Lossy quality option is available';
+
+  @override
+  String get enableLossyOptionSubtitleOff =>
+      'Downloads FLAC then converts to lossy format';
+
+  @override
+  String get lossyFormat => 'Lossy Format';
+
+  @override
+  String get lossyFormatDescription => 'Choose the lossy format for conversion';
+
+  @override
+  String get lossyFormatMp3Subtitle => '320kbps, best compatibility';
+
+  @override
+  String get lossyFormatOpusSubtitle =>
+      '128kbps, better quality at smaller size';
 
   @override
   String get qualityNote =>
@@ -1957,6 +1998,39 @@ class AppLocalizationsEs extends AppLocalizations {
   String get queueClearAllMessage =>
       'Are you sure you want to clear all downloads?';
 
+  @override
+  String get queueExportFailed => 'Export';
+
+  @override
+  String get queueExportFailedSuccess =>
+      'Failed downloads exported to TXT file';
+
+  @override
+  String get queueExportFailedClear => 'Clear Failed';
+
+  @override
+  String get queueExportFailedError => 'Failed to export downloads';
+
+  @override
+  String get settingsAutoExportFailed => 'Auto-export failed downloads';
+
+  @override
+  String get settingsAutoExportFailedSubtitle =>
+      'Save failed downloads to TXT file automatically';
+
+  @override
+  String get settingsDownloadNetwork => 'Download Network';
+
+  @override
+  String get settingsDownloadNetworkAny => 'WiFi + Mobile Data';
+
+  @override
+  String get settingsDownloadNetworkWifiOnly => 'WiFi Only';
+
+  @override
+  String get settingsDownloadNetworkSubtitle =>
+      'Choose which network to use for downloads. When set to WiFi Only, downloads will pause on mobile data.';
+
   @override
   String get queueEmpty => 'No downloads in queue';
 
@@ -2006,6 +2080,13 @@ class AppLocalizationsEs extends AppLocalizations {
   @override
   String get albumFolderYearAlbumSubtitle => 'Albums/[2005] Album Name/';
 
+  @override
+  String get albumFolderArtistAlbumSingles => 'Artist / Album + Singles';
+
+  @override
+  String get albumFolderArtistAlbumSinglesSubtitle =>
+      'Artist/Album/ and Artist/Singles/';
+
   @override
   String get downloadedAlbumDeleteSelected => 'Delete Selected';
 
@@ -2148,6 +2229,233 @@ class AppLocalizationsEs extends AppLocalizations {
 
   @override
   String get discographyFailedToFetch => 'Failed to fetch some albums';
+
+  @override
+  String get sectionStorageAccess => 'Storage Access';
+
+  @override
+  String get allFilesAccess => 'All Files Access';
+
+  @override
+  String get allFilesAccessEnabledSubtitle => 'Can write to any folder';
+
+  @override
+  String get allFilesAccessDisabledSubtitle => 'Limited to media folders only';
+
+  @override
+  String get allFilesAccessDescription =>
+      'Enable this if you encounter write errors when saving to custom folders. Android 13+ restricts access to certain directories by default.';
+
+  @override
+  String get allFilesAccessDeniedMessage =>
+      'Permission was denied. Please enable \'All files access\' manually in system settings.';
+
+  @override
+  String get allFilesAccessDisabledMessage =>
+      'All Files Access disabled. The app will use limited storage access.';
+
+  @override
+  String get settingsLocalLibrary => 'Local Library';
+
+  @override
+  String get settingsLocalLibrarySubtitle => 'Scan music & detect duplicates';
+
+  @override
+  String get libraryTitle => 'Local Library';
+
+  @override
+  String get libraryStatus => 'Library Status';
+
+  @override
+  String get libraryScanSettings => 'Scan Settings';
+
+  @override
+  String get libraryEnableLocalLibrary => 'Enable Local Library';
+
+  @override
+  String get libraryEnableLocalLibrarySubtitle =>
+      'Scan and track your existing music';
+
+  @override
+  String get libraryFolder => 'Library Folder';
+
+  @override
+  String get libraryFolderHint => 'Tap to select folder';
+
+  @override
+  String get libraryShowDuplicateIndicator => 'Show Duplicate Indicator';
+
+  @override
+  String get libraryShowDuplicateIndicatorSubtitle =>
+      'Show when searching for existing tracks';
+
+  @override
+  String get libraryActions => 'Actions';
+
+  @override
+  String get libraryScan => 'Scan Library';
+
+  @override
+  String get libraryScanSubtitle => 'Scan for audio files';
+
+  @override
+  String get libraryScanSelectFolderFirst => 'Select a folder first';
+
+  @override
+  String get libraryCleanupMissingFiles => 'Cleanup Missing Files';
+
+  @override
+  String get libraryCleanupMissingFilesSubtitle =>
+      'Remove entries for files that no longer exist';
+
+  @override
+  String get libraryClear => 'Clear Library';
+
+  @override
+  String get libraryClearSubtitle => 'Remove all scanned tracks';
+
+  @override
+  String get libraryClearConfirmTitle => 'Clear Library';
+
+  @override
+  String get libraryClearConfirmMessage =>
+      'This will remove all scanned tracks from your library. Your actual music files will not be deleted.';
+
+  @override
+  String get libraryAbout => 'About Local Library';
+
+  @override
+  String get libraryAboutDescription =>
+      'Scans your existing music collection to detect duplicates when downloading. Supports FLAC, M4A, MP3, Opus, and OGG formats. Metadata is read from file tags when available.';
+
+  @override
+  String libraryTracksCount(int count) {
+    return '$count tracks';
+  }
+
+  @override
+  String libraryLastScanned(String time) {
+    return 'Last scanned: $time';
+  }
+
+  @override
+  String get libraryLastScannedNever => 'Never';
+
+  @override
+  String get libraryScanning => 'Scanning...';
+
+  @override
+  String libraryScanProgress(String progress, int total) {
+    return '$progress% of $total files';
+  }
+
+  @override
+  String get libraryInLibrary => 'In Library';
+
+  @override
+  String libraryRemovedMissingFiles(int count) {
+    return 'Removed $count missing files from library';
+  }
+
+  @override
+  String get libraryCleared => 'Library cleared';
+
+  @override
+  String get libraryStorageAccessRequired => 'Storage Access Required';
+
+  @override
+  String get libraryStorageAccessMessage =>
+      'SpotiFLAC needs storage access to scan your music library. Please grant permission in settings.';
+
+  @override
+  String get libraryFolderNotExist => 'Selected folder does not exist';
+
+  @override
+  String get librarySourceDownloaded => 'Downloaded';
+
+  @override
+  String get librarySourceLocal => 'Local';
+
+  @override
+  String get libraryFilterAll => 'All';
+
+  @override
+  String get libraryFilterDownloaded => 'Downloaded';
+
+  @override
+  String get libraryFilterLocal => 'Local';
+
+  @override
+  String get libraryFilterTitle => 'Filters';
+
+  @override
+  String get libraryFilterReset => 'Reset';
+
+  @override
+  String get libraryFilterApply => 'Apply';
+
+  @override
+  String get libraryFilterSource => 'Source';
+
+  @override
+  String get libraryFilterQuality => 'Quality';
+
+  @override
+  String get libraryFilterQualityHiRes => 'Hi-Res (24bit)';
+
+  @override
+  String get libraryFilterQualityCD => 'CD (16bit)';
+
+  @override
+  String get libraryFilterQualityLossy => 'Lossy';
+
+  @override
+  String get libraryFilterFormat => 'Format';
+
+  @override
+  String get libraryFilterDate => 'Date Added';
+
+  @override
+  String get libraryFilterDateToday => 'Today';
+
+  @override
+  String get libraryFilterDateWeek => 'This Week';
+
+  @override
+  String get libraryFilterDateMonth => 'This Month';
+
+  @override
+  String get libraryFilterDateYear => 'This Year';
+
+  @override
+  String libraryFilterActive(int count) {
+    return '$count filter(s) active';
+  }
+
+  @override
+  String get timeJustNow => 'Just now';
+
+  @override
+  String timeMinutesAgo(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count minutes ago',
+      one: '1 minute ago',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String timeHoursAgo(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count hours ago',
+      one: '1 hour ago',
+    );
+    return '$_temp0';
+  }
 }
 
 /// The translations for Spanish Castilian, as used in Spain (`es_ES`).

lib/l10n/app_localizations_fr.dart

@@ -18,6 +18,9 @@ class AppLocalizationsFr extends AppLocalizations {
   @override
   String get navHome => 'Home';
 
+  @override
+  String get navLibrary => 'Library';
+
   @override
   String get navHistory => 'History';
 
@@ -470,6 +473,10 @@ class AppLocalizationsFr extends AppLocalizations {
   String get aboutSachinsenalDesc =>
       'The original HiFi project creator. The foundation of Tidal integration!';
 
+  @override
+  String get aboutSjdonadoDesc =>
+      'Creator of I Don\'t Have Spotify (IDHS). The fallback link resolver that saves the day!';
+
   @override
   String get aboutDoubleDouble => 'DoubleDouble';
 
@@ -680,6 +687,10 @@ class AppLocalizationsFr extends AppLocalizations {
   String get setupIosEmptyFolderWarning =>
       'iOS limitation: Empty folders cannot be selected. Choose a folder with at least one file.';
 
+  @override
+  String get setupIcloudNotSupported =>
+      'iCloud Drive is not supported. Please use the app Documents folder.';
+
   @override
   String get setupDownloadInFlac => 'Download Spotify tracks in FLAC';
 
@@ -935,6 +946,11 @@ class AppLocalizationsFr extends AppLocalizations {
     return '\"$trackName\" already downloaded';
   }
 
+  @override
+  String snackbarAlreadyInLibrary(String trackName) {
+    return '\"$trackName\" already exists in your library';
+  }
+
   @override
   String get snackbarHistoryCleared => 'History cleared';
 
@@ -1618,6 +1634,15 @@ class AppLocalizationsFr extends AppLocalizations {
   @override
   String get trackLyricsLoadFailed => 'Failed to load lyrics';
 
+  @override
+  String get trackEmbedLyrics => 'Embed Lyrics';
+
+  @override
+  String get trackLyricsEmbedded => 'Lyrics embedded successfully';
+
+  @override
+  String get trackInstrumental => 'Instrumental track';
+
   @override
   String get trackCopiedToClipboard => 'Copied to clipboard';
 
@@ -1847,20 +1872,36 @@ class AppLocalizationsFr extends AppLocalizations {
   String get qualityHiResFlacMaxSubtitle => '24-bit / up to 192kHz';
 
   @override
-  String get qualityMp3 => 'MP3';
+  String get qualityLossy => 'Lossy';
 
   @override
-  String get qualityMp3Subtitle => '320kbps (converted from FLAC)';
+  String get qualityLossyMp3Subtitle => 'MP3 320kbps (converted from FLAC)';
 
   @override
-  String get enableMp3Option => 'Enable MP3 Option';
+  String get qualityLossyOpusSubtitle => 'Opus 128kbps (converted from FLAC)';
 
   @override
-  String get enableMp3OptionSubtitleOn => 'MP3 quality option is available';
+  String get enableLossyOption => 'Enable Lossy Option';
 
   @override
-  String get enableMp3OptionSubtitleOff =>
-      'Downloads FLAC then converts to 320kbps MP3';
+  String get enableLossyOptionSubtitleOn => 'Lossy quality option is available';
+
+  @override
+  String get enableLossyOptionSubtitleOff =>
+      'Downloads FLAC then converts to lossy format';
+
+  @override
+  String get lossyFormat => 'Lossy Format';
+
+  @override
+  String get lossyFormatDescription => 'Choose the lossy format for conversion';
+
+  @override
+  String get lossyFormatMp3Subtitle => '320kbps, best compatibility';
+
+  @override
+  String get lossyFormatOpusSubtitle =>
+      '128kbps, better quality at smaller size';
 
   @override
   String get qualityNote =>
@@ -1957,6 +1998,39 @@ class AppLocalizationsFr extends AppLocalizations {
   String get queueClearAllMessage =>
       'Are you sure you want to clear all downloads?';
 
+  @override
+  String get queueExportFailed => 'Export';
+
+  @override
+  String get queueExportFailedSuccess =>
+      'Failed downloads exported to TXT file';
+
+  @override
+  String get queueExportFailedClear => 'Clear Failed';
+
+  @override
+  String get queueExportFailedError => 'Failed to export downloads';
+
+  @override
+  String get settingsAutoExportFailed => 'Auto-export failed downloads';
+
+  @override
+  String get settingsAutoExportFailedSubtitle =>
+      'Save failed downloads to TXT file automatically';
+
+  @override
+  String get settingsDownloadNetwork => 'Download Network';
+
+  @override
+  String get settingsDownloadNetworkAny => 'WiFi + Mobile Data';
+
+  @override
+  String get settingsDownloadNetworkWifiOnly => 'WiFi Only';
+
+  @override
+  String get settingsDownloadNetworkSubtitle =>
+      'Choose which network to use for downloads. When set to WiFi Only, downloads will pause on mobile data.';
+
   @override
   String get queueEmpty => 'No downloads in queue';
 
@@ -2006,6 +2080,13 @@ class AppLocalizationsFr extends AppLocalizations {
   @override
   String get albumFolderYearAlbumSubtitle => 'Albums/[2005] Album Name/';
 
+  @override
+  String get albumFolderArtistAlbumSingles => 'Artist / Album + Singles';
+
+  @override
+  String get albumFolderArtistAlbumSinglesSubtitle =>
+      'Artist/Album/ and Artist/Singles/';
+
   @override
   String get downloadedAlbumDeleteSelected => 'Delete Selected';
 
@@ -2148,4 +2229,231 @@ class AppLocalizationsFr extends AppLocalizations {
 
   @override
   String get discographyFailedToFetch => 'Failed to fetch some albums';
+
+  @override
+  String get sectionStorageAccess => 'Storage Access';
+
+  @override
+  String get allFilesAccess => 'All Files Access';
+
+  @override
+  String get allFilesAccessEnabledSubtitle => 'Can write to any folder';
+
+  @override
+  String get allFilesAccessDisabledSubtitle => 'Limited to media folders only';
+
+  @override
+  String get allFilesAccessDescription =>
+      'Enable this if you encounter write errors when saving to custom folders. Android 13+ restricts access to certain directories by default.';
+
+  @override
+  String get allFilesAccessDeniedMessage =>
+      'Permission was denied. Please enable \'All files access\' manually in system settings.';
+
+  @override
+  String get allFilesAccessDisabledMessage =>
+      'All Files Access disabled. The app will use limited storage access.';
+
+  @override
+  String get settingsLocalLibrary => 'Local Library';
+
+  @override
+  String get settingsLocalLibrarySubtitle => 'Scan music & detect duplicates';
+
+  @override
+  String get libraryTitle => 'Local Library';
+
+  @override
+  String get libraryStatus => 'Library Status';
+
+  @override
+  String get libraryScanSettings => 'Scan Settings';
+
+  @override
+  String get libraryEnableLocalLibrary => 'Enable Local Library';
+
+  @override
+  String get libraryEnableLocalLibrarySubtitle =>
+      'Scan and track your existing music';
+
+  @override
+  String get libraryFolder => 'Library Folder';
+
+  @override
+  String get libraryFolderHint => 'Tap to select folder';
+
+  @override
+  String get libraryShowDuplicateIndicator => 'Show Duplicate Indicator';
+
+  @override
+  String get libraryShowDuplicateIndicatorSubtitle =>
+      'Show when searching for existing tracks';
+
+  @override
+  String get libraryActions => 'Actions';
+
+  @override
+  String get libraryScan => 'Scan Library';
+
+  @override
+  String get libraryScanSubtitle => 'Scan for audio files';
+
+  @override
+  String get libraryScanSelectFolderFirst => 'Select a folder first';
+
+  @override
+  String get libraryCleanupMissingFiles => 'Cleanup Missing Files';
+
+  @override
+  String get libraryCleanupMissingFilesSubtitle =>
+      'Remove entries for files that no longer exist';
+
+  @override
+  String get libraryClear => 'Clear Library';
+
+  @override
+  String get libraryClearSubtitle => 'Remove all scanned tracks';
+
+  @override
+  String get libraryClearConfirmTitle => 'Clear Library';
+
+  @override
+  String get libraryClearConfirmMessage =>
+      'This will remove all scanned tracks from your library. Your actual music files will not be deleted.';
+
+  @override
+  String get libraryAbout => 'About Local Library';
+
+  @override
+  String get libraryAboutDescription =>
+      'Scans your existing music collection to detect duplicates when downloading. Supports FLAC, M4A, MP3, Opus, and OGG formats. Metadata is read from file tags when available.';
+
+  @override
+  String libraryTracksCount(int count) {
+    return '$count tracks';
+  }
+
+  @override
+  String libraryLastScanned(String time) {
+    return 'Last scanned: $time';
+  }
+
+  @override
+  String get libraryLastScannedNever => 'Never';
+
+  @override
+  String get libraryScanning => 'Scanning...';
+
+  @override
+  String libraryScanProgress(String progress, int total) {
+    return '$progress% of $total files';
+  }
+
+  @override
+  String get libraryInLibrary => 'In Library';
+
+  @override
+  String libraryRemovedMissingFiles(int count) {
+    return 'Removed $count missing files from library';
+  }
+
+  @override
+  String get libraryCleared => 'Library cleared';
+
+  @override
+  String get libraryStorageAccessRequired => 'Storage Access Required';
+
+  @override
+  String get libraryStorageAccessMessage =>
+      'SpotiFLAC needs storage access to scan your music library. Please grant permission in settings.';
+
+  @override
+  String get libraryFolderNotExist => 'Selected folder does not exist';
+
+  @override
+  String get librarySourceDownloaded => 'Downloaded';
+
+  @override
+  String get librarySourceLocal => 'Local';
+
+  @override
+  String get libraryFilterAll => 'All';
+
+  @override
+  String get libraryFilterDownloaded => 'Downloaded';
+
+  @override
+  String get libraryFilterLocal => 'Local';
+
+  @override
+  String get libraryFilterTitle => 'Filters';
+
+  @override
+  String get libraryFilterReset => 'Reset';
+
+  @override
+  String get libraryFilterApply => 'Apply';
+
+  @override
+  String get libraryFilterSource => 'Source';
+
+  @override
+  String get libraryFilterQuality => 'Quality';
+
+  @override
+  String get libraryFilterQualityHiRes => 'Hi-Res (24bit)';
+
+  @override
+  String get libraryFilterQualityCD => 'CD (16bit)';
+
+  @override
+  String get libraryFilterQualityLossy => 'Lossy';
+
+  @override
+  String get libraryFilterFormat => 'Format';
+
+  @override
+  String get libraryFilterDate => 'Date Added';
+
+  @override
+  String get libraryFilterDateToday => 'Today';
+
+  @override
+  String get libraryFilterDateWeek => 'This Week';
+
+  @override
+  String get libraryFilterDateMonth => 'This Month';
+
+  @override
+  String get libraryFilterDateYear => 'This Year';
+
+  @override
+  String libraryFilterActive(int count) {
+    return '$count filter(s) active';
+  }
+
+  @override
+  String get timeJustNow => 'Just now';
+
+  @override
+  String timeMinutesAgo(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count minutes ago',
+      one: '1 minute ago',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String timeHoursAgo(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count hours ago',
+      one: '1 hour ago',
+    );
+    return '$_temp0';
+  }
 }

lib/l10n/app_localizations_hi.dart

@@ -9,20 +9,23 @@ class AppLocalizationsHi extends AppLocalizations {
   AppLocalizationsHi([String locale = 'hi']) : super(locale);
 
   @override
-  String get appName => 'SpotiFLAC';
+  String get appName => 'SpotiFlac';
 
   @override
   String get appDescription =>
-      'Download Spotify tracks in lossless quality from Tidal, Qobuz, and Amazon Music.';
+      'स्पॉटीफाई ट्रैक डाउनलोड करें टाइडल, क्वाबज एवं एवं अमेजन म्यूजिक से उच्चतम क्वालिटी में।';
 
   @override
-  String get navHome => 'Home';
+  String get navHome => 'होम';
 
   @override
-  String get navHistory => 'History';
+  String get navLibrary => 'Library';
 
   @override
-  String get navSettings => 'Settings';
+  String get navHistory => 'इतिहास';
+
+  @override
+  String get navSettings => 'विकल्प';
 
   @override
   String get navStore => 'Store';
@@ -184,7 +187,7 @@ class AppLocalizationsHi extends AppLocalizations {
   String get quality128 => '128 kbps';
 
   @override
-  String get appearanceTitle => 'Appearance';
+  String get appearanceTitle => 'दिखावट';
 
   @override
   String get appearanceTheme => 'Theme';
@@ -199,10 +202,10 @@ class AppLocalizationsHi extends AppLocalizations {
   String get appearanceThemeDark => 'Dark';
 
   @override
-  String get appearanceDynamicColor => 'Dynamic Color';
+  String get appearanceDynamicColor => 'डायनेमिक रंग';
 
   @override
-  String get appearanceDynamicColorSubtitle => 'Use colors from your wallpaper';
+  String get appearanceDynamicColorSubtitle => 'वॉलपेपर से रंग इस्तेमाल करें';
 
   @override
   String get appearanceAccentColor => 'Accent Color';
@@ -470,6 +473,10 @@ class AppLocalizationsHi extends AppLocalizations {
   String get aboutSachinsenalDesc =>
       'The original HiFi project creator. The foundation of Tidal integration!';
 
+  @override
+  String get aboutSjdonadoDesc =>
+      'Creator of I Don\'t Have Spotify (IDHS). The fallback link resolver that saves the day!';
+
   @override
   String get aboutDoubleDouble => 'DoubleDouble';
 
@@ -680,6 +687,10 @@ class AppLocalizationsHi extends AppLocalizations {
   String get setupIosEmptyFolderWarning =>
       'iOS limitation: Empty folders cannot be selected. Choose a folder with at least one file.';
 
+  @override
+  String get setupIcloudNotSupported =>
+      'iCloud Drive is not supported. Please use the app Documents folder.';
+
   @override
   String get setupDownloadInFlac => 'Download Spotify tracks in FLAC';
 
@@ -935,6 +946,11 @@ class AppLocalizationsHi extends AppLocalizations {
     return '\"$trackName\" already downloaded';
   }
 
+  @override
+  String snackbarAlreadyInLibrary(String trackName) {
+    return '\"$trackName\" already exists in your library';
+  }
+
   @override
   String get snackbarHistoryCleared => 'History cleared';
 
@@ -1618,6 +1634,15 @@ class AppLocalizationsHi extends AppLocalizations {
   @override
   String get trackLyricsLoadFailed => 'Failed to load lyrics';
 
+  @override
+  String get trackEmbedLyrics => 'Embed Lyrics';
+
+  @override
+  String get trackLyricsEmbedded => 'Lyrics embedded successfully';
+
+  @override
+  String get trackInstrumental => 'Instrumental track';
+
   @override
   String get trackCopiedToClipboard => 'Copied to clipboard';
 
@@ -1847,20 +1872,36 @@ class AppLocalizationsHi extends AppLocalizations {
   String get qualityHiResFlacMaxSubtitle => '24-bit / up to 192kHz';
 
   @override
-  String get qualityMp3 => 'MP3';
+  String get qualityLossy => 'Lossy';
 
   @override
-  String get qualityMp3Subtitle => '320kbps (converted from FLAC)';
+  String get qualityLossyMp3Subtitle => 'MP3 320kbps (converted from FLAC)';
 
   @override
-  String get enableMp3Option => 'Enable MP3 Option';
+  String get qualityLossyOpusSubtitle => 'Opus 128kbps (converted from FLAC)';
 
   @override
-  String get enableMp3OptionSubtitleOn => 'MP3 quality option is available';
+  String get enableLossyOption => 'Enable Lossy Option';
 
   @override
-  String get enableMp3OptionSubtitleOff =>
-      'Downloads FLAC then converts to 320kbps MP3';
+  String get enableLossyOptionSubtitleOn => 'Lossy quality option is available';
+
+  @override
+  String get enableLossyOptionSubtitleOff =>
+      'Downloads FLAC then converts to lossy format';
+
+  @override
+  String get lossyFormat => 'Lossy Format';
+
+  @override
+  String get lossyFormatDescription => 'Choose the lossy format for conversion';
+
+  @override
+  String get lossyFormatMp3Subtitle => '320kbps, best compatibility';
+
+  @override
+  String get lossyFormatOpusSubtitle =>
+      '128kbps, better quality at smaller size';
 
   @override
   String get qualityNote =>
@@ -1957,6 +1998,39 @@ class AppLocalizationsHi extends AppLocalizations {
   String get queueClearAllMessage =>
       'Are you sure you want to clear all downloads?';
 
+  @override
+  String get queueExportFailed => 'Export';
+
+  @override
+  String get queueExportFailedSuccess =>
+      'Failed downloads exported to TXT file';
+
+  @override
+  String get queueExportFailedClear => 'Clear Failed';
+
+  @override
+  String get queueExportFailedError => 'Failed to export downloads';
+
+  @override
+  String get settingsAutoExportFailed => 'Auto-export failed downloads';
+
+  @override
+  String get settingsAutoExportFailedSubtitle =>
+      'Save failed downloads to TXT file automatically';
+
+  @override
+  String get settingsDownloadNetwork => 'Download Network';
+
+  @override
+  String get settingsDownloadNetworkAny => 'WiFi + Mobile Data';
+
+  @override
+  String get settingsDownloadNetworkWifiOnly => 'WiFi Only';
+
+  @override
+  String get settingsDownloadNetworkSubtitle =>
+      'Choose which network to use for downloads. When set to WiFi Only, downloads will pause on mobile data.';
+
   @override
   String get queueEmpty => 'No downloads in queue';
 
@@ -2006,6 +2080,13 @@ class AppLocalizationsHi extends AppLocalizations {
   @override
   String get albumFolderYearAlbumSubtitle => 'Albums/[2005] Album Name/';
 
+  @override
+  String get albumFolderArtistAlbumSingles => 'Artist / Album + Singles';
+
+  @override
+  String get albumFolderArtistAlbumSinglesSubtitle =>
+      'Artist/Album/ and Artist/Singles/';
+
   @override
   String get downloadedAlbumDeleteSelected => 'Delete Selected';
 
@@ -2148,4 +2229,231 @@ class AppLocalizationsHi extends AppLocalizations {
 
   @override
   String get discographyFailedToFetch => 'Failed to fetch some albums';
+
+  @override
+  String get sectionStorageAccess => 'Storage Access';
+
+  @override
+  String get allFilesAccess => 'All Files Access';
+
+  @override
+  String get allFilesAccessEnabledSubtitle => 'Can write to any folder';
+
+  @override
+  String get allFilesAccessDisabledSubtitle => 'Limited to media folders only';
+
+  @override
+  String get allFilesAccessDescription =>
+      'Enable this if you encounter write errors when saving to custom folders. Android 13+ restricts access to certain directories by default.';
+
+  @override
+  String get allFilesAccessDeniedMessage =>
+      'Permission was denied. Please enable \'All files access\' manually in system settings.';
+
+  @override
+  String get allFilesAccessDisabledMessage =>
+      'All Files Access disabled. The app will use limited storage access.';
+
+  @override
+  String get settingsLocalLibrary => 'Local Library';
+
+  @override
+  String get settingsLocalLibrarySubtitle => 'Scan music & detect duplicates';
+
+  @override
+  String get libraryTitle => 'Local Library';
+
+  @override
+  String get libraryStatus => 'Library Status';
+
+  @override
+  String get libraryScanSettings => 'Scan Settings';
+
+  @override
+  String get libraryEnableLocalLibrary => 'Enable Local Library';
+
+  @override
+  String get libraryEnableLocalLibrarySubtitle =>
+      'Scan and track your existing music';
+
+  @override
+  String get libraryFolder => 'Library Folder';
+
+  @override
+  String get libraryFolderHint => 'Tap to select folder';
+
+  @override
+  String get libraryShowDuplicateIndicator => 'Show Duplicate Indicator';
+
+  @override
+  String get libraryShowDuplicateIndicatorSubtitle =>
+      'Show when searching for existing tracks';
+
+  @override
+  String get libraryActions => 'Actions';
+
+  @override
+  String get libraryScan => 'Scan Library';
+
+  @override
+  String get libraryScanSubtitle => 'Scan for audio files';
+
+  @override
+  String get libraryScanSelectFolderFirst => 'Select a folder first';
+
+  @override
+  String get libraryCleanupMissingFiles => 'Cleanup Missing Files';
+
+  @override
+  String get libraryCleanupMissingFilesSubtitle =>
+      'Remove entries for files that no longer exist';
+
+  @override
+  String get libraryClear => 'Clear Library';
+
+  @override
+  String get libraryClearSubtitle => 'Remove all scanned tracks';
+
+  @override
+  String get libraryClearConfirmTitle => 'Clear Library';
+
+  @override
+  String get libraryClearConfirmMessage =>
+      'This will remove all scanned tracks from your library. Your actual music files will not be deleted.';
+
+  @override
+  String get libraryAbout => 'About Local Library';
+
+  @override
+  String get libraryAboutDescription =>
+      'Scans your existing music collection to detect duplicates when downloading. Supports FLAC, M4A, MP3, Opus, and OGG formats. Metadata is read from file tags when available.';
+
+  @override
+  String libraryTracksCount(int count) {
+    return '$count tracks';
+  }
+
+  @override
+  String libraryLastScanned(String time) {
+    return 'Last scanned: $time';
+  }
+
+  @override
+  String get libraryLastScannedNever => 'Never';
+
+  @override
+  String get libraryScanning => 'Scanning...';
+
+  @override
+  String libraryScanProgress(String progress, int total) {
+    return '$progress% of $total files';
+  }
+
+  @override
+  String get libraryInLibrary => 'In Library';
+
+  @override
+  String libraryRemovedMissingFiles(int count) {
+    return 'Removed $count missing files from library';
+  }
+
+  @override
+  String get libraryCleared => 'Library cleared';
+
+  @override
+  String get libraryStorageAccessRequired => 'Storage Access Required';
+
+  @override
+  String get libraryStorageAccessMessage =>
+      'SpotiFLAC needs storage access to scan your music library. Please grant permission in settings.';
+
+  @override
+  String get libraryFolderNotExist => 'Selected folder does not exist';
+
+  @override
+  String get librarySourceDownloaded => 'Downloaded';
+
+  @override
+  String get librarySourceLocal => 'Local';
+
+  @override
+  String get libraryFilterAll => 'All';
+
+  @override
+  String get libraryFilterDownloaded => 'Downloaded';
+
+  @override
+  String get libraryFilterLocal => 'Local';
+
+  @override
+  String get libraryFilterTitle => 'Filters';
+
+  @override
+  String get libraryFilterReset => 'Reset';
+
+  @override
+  String get libraryFilterApply => 'Apply';
+
+  @override
+  String get libraryFilterSource => 'Source';
+
+  @override
+  String get libraryFilterQuality => 'Quality';
+
+  @override
+  String get libraryFilterQualityHiRes => 'Hi-Res (24bit)';
+
+  @override
+  String get libraryFilterQualityCD => 'CD (16bit)';
+
+  @override
+  String get libraryFilterQualityLossy => 'Lossy';
+
+  @override
+  String get libraryFilterFormat => 'Format';
+
+  @override
+  String get libraryFilterDate => 'Date Added';
+
+  @override
+  String get libraryFilterDateToday => 'Today';
+
+  @override
+  String get libraryFilterDateWeek => 'This Week';
+
+  @override
+  String get libraryFilterDateMonth => 'This Month';
+
+  @override
+  String get libraryFilterDateYear => 'This Year';
+
+  @override
+  String libraryFilterActive(int count) {
+    return '$count filter(s) active';
+  }
+
+  @override
+  String get timeJustNow => 'Just now';
+
+  @override
+  String timeMinutesAgo(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count minutes ago',
+      one: '1 minute ago',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String timeHoursAgo(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count hours ago',
+      one: '1 hour ago',
+    );
+    return '$_temp0';
+  }
 }

lib/l10n/app_localizations_id.dart

@@ -18,6 +18,9 @@ class AppLocalizationsId extends AppLocalizations {
   @override
   String get navHome => 'Beranda';
 
+  @override
+  String get navLibrary => 'Library';
+
   @override
   String get navHistory => 'Riwayat';
 
@@ -475,6 +478,10 @@ class AppLocalizationsId extends AppLocalizations {
   String get aboutSachinsenalDesc =>
       'Pembuat proyek HiFi asli. Fondasi dari integrasi Tidal!';
 
+  @override
+  String get aboutSjdonadoDesc =>
+      'Creator of I Don\'t Have Spotify (IDHS). The fallback link resolver that saves the day!';
+
   @override
   String get aboutDoubleDouble => 'DoubleDouble';
 
@@ -685,6 +692,10 @@ class AppLocalizationsId extends AppLocalizations {
   String get setupIosEmptyFolderWarning =>
       'Batasan iOS: Folder kosong tidak dapat dipilih. Pilih folder dengan minimal satu file.';
 
+  @override
+  String get setupIcloudNotSupported =>
+      'iCloud Drive is not supported. Please use the app Documents folder.';
+
   @override
   String get setupDownloadInFlac => 'Unduh lagu Spotify dalam format FLAC';
 
@@ -941,6 +952,11 @@ class AppLocalizationsId extends AppLocalizations {
     return '\"$trackName\" sudah diunduh';
   }
 
+  @override
+  String snackbarAlreadyInLibrary(String trackName) {
+    return '\"$trackName\" already exists in your library';
+  }
+
   @override
   String get snackbarHistoryCleared => 'Riwayat dihapus';
 
@@ -1628,6 +1644,15 @@ class AppLocalizationsId extends AppLocalizations {
   @override
   String get trackLyricsLoadFailed => 'Gagal memuat lirik';
 
+  @override
+  String get trackEmbedLyrics => 'Embed Lyrics';
+
+  @override
+  String get trackLyricsEmbedded => 'Lyrics embedded successfully';
+
+  @override
+  String get trackInstrumental => 'Instrumental track';
+
   @override
   String get trackCopiedToClipboard => 'Disalin ke clipboard';
 
@@ -1859,20 +1884,36 @@ class AppLocalizationsId extends AppLocalizations {
   String get qualityHiResFlacMaxSubtitle => '24-bit / hingga 192kHz';
 
   @override
-  String get qualityMp3 => 'MP3';
+  String get qualityLossy => 'Lossy';
 
   @override
-  String get qualityMp3Subtitle => '320kbps (konversi dari FLAC)';
+  String get qualityLossyMp3Subtitle => 'MP3 320kbps (converted from FLAC)';
 
   @override
-  String get enableMp3Option => 'Aktifkan Opsi MP3';
+  String get qualityLossyOpusSubtitle => 'Opus 128kbps (converted from FLAC)';
 
   @override
-  String get enableMp3OptionSubtitleOn => 'Opsi kualitas MP3 tersedia';
+  String get enableLossyOption => 'Enable Lossy Option';
 
   @override
-  String get enableMp3OptionSubtitleOff =>
-      'Unduh FLAC lalu konversi ke MP3 320kbps';
+  String get enableLossyOptionSubtitleOn => 'Lossy quality option is available';
+
+  @override
+  String get enableLossyOptionSubtitleOff =>
+      'Downloads FLAC then converts to lossy format';
+
+  @override
+  String get lossyFormat => 'Lossy Format';
+
+  @override
+  String get lossyFormatDescription => 'Choose the lossy format for conversion';
+
+  @override
+  String get lossyFormatMp3Subtitle => '320kbps, best compatibility';
+
+  @override
+  String get lossyFormatOpusSubtitle =>
+      '128kbps, better quality at smaller size';
 
   @override
   String get qualityNote =>
@@ -1970,6 +2011,39 @@ class AppLocalizationsId extends AppLocalizations {
   String get queueClearAllMessage =>
       'Apakah Anda yakin ingin menghapus semua unduhan?';
 
+  @override
+  String get queueExportFailed => 'Export';
+
+  @override
+  String get queueExportFailedSuccess =>
+      'Failed downloads exported to TXT file';
+
+  @override
+  String get queueExportFailedClear => 'Clear Failed';
+
+  @override
+  String get queueExportFailedError => 'Failed to export downloads';
+
+  @override
+  String get settingsAutoExportFailed => 'Auto-export failed downloads';
+
+  @override
+  String get settingsAutoExportFailedSubtitle =>
+      'Save failed downloads to TXT file automatically';
+
+  @override
+  String get settingsDownloadNetwork => 'Download Network';
+
+  @override
+  String get settingsDownloadNetworkAny => 'WiFi + Mobile Data';
+
+  @override
+  String get settingsDownloadNetworkWifiOnly => 'WiFi Only';
+
+  @override
+  String get settingsDownloadNetworkSubtitle =>
+      'Choose which network to use for downloads. When set to WiFi Only, downloads will pause on mobile data.';
+
   @override
   String get queueEmpty => 'Tidak ada unduhan dalam antrian';
 
@@ -2019,6 +2093,13 @@ class AppLocalizationsId extends AppLocalizations {
   @override
   String get albumFolderYearAlbumSubtitle => 'Albums/[2005] Nama Album/';
 
+  @override
+  String get albumFolderArtistAlbumSingles => 'Artist / Album + Singles';
+
+  @override
+  String get albumFolderArtistAlbumSinglesSubtitle =>
+      'Artist/Album/ and Artist/Singles/';
+
   @override
   String get downloadedAlbumDeleteSelected => 'Hapus yang Dipilih';
 
@@ -2097,68 +2178,295 @@ class AppLocalizationsId extends AppLocalizations {
   }
 
   @override
-  String get discographyDownload => 'Unduh Diskografi';
+  String get discographyDownload => 'Download Discography';
 
   @override
   String get discographyDownloadAll => 'Unduh Semua';
 
   @override
   String discographyDownloadAllSubtitle(int count, int albumCount) {
-    return '$count lagu dari $albumCount rilis';
+    return '$count tracks from $albumCount releases';
   }
 
   @override
-  String get discographyAlbumsOnly => 'Album Saja';
+  String get discographyAlbumsOnly => 'Albums Only';
 
   @override
   String discographyAlbumsOnlySubtitle(int count, int albumCount) {
-    return '$count lagu dari $albumCount album';
+    return '$count tracks from $albumCount albums';
   }
 
   @override
-  String get discographySinglesOnly => 'Single & EP Saja';
+  String get discographySinglesOnly => 'Singles & EPs Only';
 
   @override
   String discographySinglesOnlySubtitle(int count, int albumCount) {
-    return '$count lagu dari $albumCount single';
+    return '$count tracks from $albumCount singles';
   }
 
   @override
-  String get discographySelectAlbums => 'Pilih Album...';
+  String get discographySelectAlbums => 'Select Albums...';
 
   @override
   String get discographySelectAlbumsSubtitle =>
-      'Pilih album atau single tertentu';
+      'Choose specific albums or singles';
 
   @override
-  String get discographyFetchingTracks => 'Mengambil lagu...';
+  String get discographyFetchingTracks => 'Fetching tracks...';
 
   @override
   String discographyFetchingAlbum(int current, int total) {
-    return 'Mengambil $current dari $total...';
+    return 'Fetching $current of $total...';
   }
 
   @override
   String discographySelectedCount(int count) {
-    return '$count dipilih';
+    return '$count selected';
   }
 
   @override
-  String get discographyDownloadSelected => 'Unduh yang Dipilih';
+  String get discographyDownloadSelected => 'Download Selected';
 
   @override
   String discographyAddedToQueue(int count) {
-    return 'Menambahkan $count lagu ke antrian';
+    return 'Added $count tracks to queue';
   }
 
   @override
   String discographySkippedDownloaded(int added, int skipped) {
-    return '$added ditambahkan, $skipped sudah diunduh';
+    return '$added added, $skipped already downloaded';
   }
 
   @override
-  String get discographyNoAlbums => 'Tidak ada album tersedia';
+  String get discographyNoAlbums => 'No albums available';
 
   @override
-  String get discographyFailedToFetch => 'Gagal mengambil beberapa album';
+  String get discographyFailedToFetch => 'Failed to fetch some albums';
+
+  @override
+  String get sectionStorageAccess => 'Storage Access';
+
+  @override
+  String get allFilesAccess => 'All Files Access';
+
+  @override
+  String get allFilesAccessEnabledSubtitle => 'Can write to any folder';
+
+  @override
+  String get allFilesAccessDisabledSubtitle => 'Limited to media folders only';
+
+  @override
+  String get allFilesAccessDescription =>
+      'Enable this if you encounter write errors when saving to custom folders. Android 13+ restricts access to certain directories by default.';
+
+  @override
+  String get allFilesAccessDeniedMessage =>
+      'Permission was denied. Please enable \'All files access\' manually in system settings.';
+
+  @override
+  String get allFilesAccessDisabledMessage =>
+      'All Files Access disabled. The app will use limited storage access.';
+
+  @override
+  String get settingsLocalLibrary => 'Local Library';
+
+  @override
+  String get settingsLocalLibrarySubtitle => 'Scan music & detect duplicates';
+
+  @override
+  String get libraryTitle => 'Local Library';
+
+  @override
+  String get libraryStatus => 'Library Status';
+
+  @override
+  String get libraryScanSettings => 'Scan Settings';
+
+  @override
+  String get libraryEnableLocalLibrary => 'Enable Local Library';
+
+  @override
+  String get libraryEnableLocalLibrarySubtitle =>
+      'Scan and track your existing music';
+
+  @override
+  String get libraryFolder => 'Library Folder';
+
+  @override
+  String get libraryFolderHint => 'Tap to select folder';
+
+  @override
+  String get libraryShowDuplicateIndicator => 'Show Duplicate Indicator';
+
+  @override
+  String get libraryShowDuplicateIndicatorSubtitle =>
+      'Show when searching for existing tracks';
+
+  @override
+  String get libraryActions => 'Actions';
+
+  @override
+  String get libraryScan => 'Scan Library';
+
+  @override
+  String get libraryScanSubtitle => 'Scan for audio files';
+
+  @override
+  String get libraryScanSelectFolderFirst => 'Select a folder first';
+
+  @override
+  String get libraryCleanupMissingFiles => 'Cleanup Missing Files';
+
+  @override
+  String get libraryCleanupMissingFilesSubtitle =>
+      'Remove entries for files that no longer exist';
+
+  @override
+  String get libraryClear => 'Clear Library';
+
+  @override
+  String get libraryClearSubtitle => 'Remove all scanned tracks';
+
+  @override
+  String get libraryClearConfirmTitle => 'Clear Library';
+
+  @override
+  String get libraryClearConfirmMessage =>
+      'This will remove all scanned tracks from your library. Your actual music files will not be deleted.';
+
+  @override
+  String get libraryAbout => 'About Local Library';
+
+  @override
+  String get libraryAboutDescription =>
+      'Scans your existing music collection to detect duplicates when downloading. Supports FLAC, M4A, MP3, Opus, and OGG formats. Metadata is read from file tags when available.';
+
+  @override
+  String libraryTracksCount(int count) {
+    return '$count tracks';
+  }
+
+  @override
+  String libraryLastScanned(String time) {
+    return 'Last scanned: $time';
+  }
+
+  @override
+  String get libraryLastScannedNever => 'Never';
+
+  @override
+  String get libraryScanning => 'Scanning...';
+
+  @override
+  String libraryScanProgress(String progress, int total) {
+    return '$progress% of $total files';
+  }
+
+  @override
+  String get libraryInLibrary => 'In Library';
+
+  @override
+  String libraryRemovedMissingFiles(int count) {
+    return 'Removed $count missing files from library';
+  }
+
+  @override
+  String get libraryCleared => 'Library cleared';
+
+  @override
+  String get libraryStorageAccessRequired => 'Storage Access Required';
+
+  @override
+  String get libraryStorageAccessMessage =>
+      'SpotiFLAC needs storage access to scan your music library. Please grant permission in settings.';
+
+  @override
+  String get libraryFolderNotExist => 'Selected folder does not exist';
+
+  @override
+  String get librarySourceDownloaded => 'Downloaded';
+
+  @override
+  String get librarySourceLocal => 'Local';
+
+  @override
+  String get libraryFilterAll => 'All';
+
+  @override
+  String get libraryFilterDownloaded => 'Downloaded';
+
+  @override
+  String get libraryFilterLocal => 'Local';
+
+  @override
+  String get libraryFilterTitle => 'Filters';
+
+  @override
+  String get libraryFilterReset => 'Reset';
+
+  @override
+  String get libraryFilterApply => 'Apply';
+
+  @override
+  String get libraryFilterSource => 'Source';
+
+  @override
+  String get libraryFilterQuality => 'Quality';
+
+  @override
+  String get libraryFilterQualityHiRes => 'Hi-Res (24bit)';
+
+  @override
+  String get libraryFilterQualityCD => 'CD (16bit)';
+
+  @override
+  String get libraryFilterQualityLossy => 'Lossy';
+
+  @override
+  String get libraryFilterFormat => 'Format';
+
+  @override
+  String get libraryFilterDate => 'Date Added';
+
+  @override
+  String get libraryFilterDateToday => 'Today';
+
+  @override
+  String get libraryFilterDateWeek => 'This Week';
+
+  @override
+  String get libraryFilterDateMonth => 'This Month';
+
+  @override
+  String get libraryFilterDateYear => 'This Year';
+
+  @override
+  String libraryFilterActive(int count) {
+    return '$count filter(s) active';
+  }
+
+  @override
+  String get timeJustNow => 'Just now';
+
+  @override
+  String timeMinutesAgo(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count minutes ago',
+      one: '1 minute ago',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String timeHoursAgo(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count hours ago',
+      one: '1 hour ago',
+    );
+    return '$_temp0';
+  }
 }

lib/l10n/app_localizations_ko.dart

@@ -18,6 +18,9 @@ class AppLocalizationsKo extends AppLocalizations {
   @override
   String get navHome => 'Home';
 
+  @override
+  String get navLibrary => 'Library';
+
   @override
   String get navHistory => 'History';
 
@@ -470,6 +473,10 @@ class AppLocalizationsKo extends AppLocalizations {
   String get aboutSachinsenalDesc =>
       'The original HiFi project creator. The foundation of Tidal integration!';
 
+  @override
+  String get aboutSjdonadoDesc =>
+      'Creator of I Don\'t Have Spotify (IDHS). The fallback link resolver that saves the day!';
+
   @override
   String get aboutDoubleDouble => 'DoubleDouble';
 
@@ -680,6 +687,10 @@ class AppLocalizationsKo extends AppLocalizations {
   String get setupIosEmptyFolderWarning =>
       'iOS limitation: Empty folders cannot be selected. Choose a folder with at least one file.';
 
+  @override
+  String get setupIcloudNotSupported =>
+      'iCloud Drive is not supported. Please use the app Documents folder.';
+
   @override
   String get setupDownloadInFlac => 'Download Spotify tracks in FLAC';
 
@@ -935,6 +946,11 @@ class AppLocalizationsKo extends AppLocalizations {
     return '\"$trackName\" already downloaded';
   }
 
+  @override
+  String snackbarAlreadyInLibrary(String trackName) {
+    return '\"$trackName\" already exists in your library';
+  }
+
   @override
   String get snackbarHistoryCleared => 'History cleared';
 
@@ -1618,6 +1634,15 @@ class AppLocalizationsKo extends AppLocalizations {
   @override
   String get trackLyricsLoadFailed => 'Failed to load lyrics';
 
+  @override
+  String get trackEmbedLyrics => 'Embed Lyrics';
+
+  @override
+  String get trackLyricsEmbedded => 'Lyrics embedded successfully';
+
+  @override
+  String get trackInstrumental => 'Instrumental track';
+
   @override
   String get trackCopiedToClipboard => 'Copied to clipboard';
 
@@ -1847,20 +1872,36 @@ class AppLocalizationsKo extends AppLocalizations {
   String get qualityHiResFlacMaxSubtitle => '24-bit / up to 192kHz';
 
   @override
-  String get qualityMp3 => 'MP3';
+  String get qualityLossy => 'Lossy';
 
   @override
-  String get qualityMp3Subtitle => '320kbps (converted from FLAC)';
+  String get qualityLossyMp3Subtitle => 'MP3 320kbps (converted from FLAC)';
 
   @override
-  String get enableMp3Option => 'Enable MP3 Option';
+  String get qualityLossyOpusSubtitle => 'Opus 128kbps (converted from FLAC)';
 
   @override
-  String get enableMp3OptionSubtitleOn => 'MP3 quality option is available';
+  String get enableLossyOption => 'Enable Lossy Option';
 
   @override
-  String get enableMp3OptionSubtitleOff =>
-      'Downloads FLAC then converts to 320kbps MP3';
+  String get enableLossyOptionSubtitleOn => 'Lossy quality option is available';
+
+  @override
+  String get enableLossyOptionSubtitleOff =>
+      'Downloads FLAC then converts to lossy format';
+
+  @override
+  String get lossyFormat => 'Lossy Format';
+
+  @override
+  String get lossyFormatDescription => 'Choose the lossy format for conversion';
+
+  @override
+  String get lossyFormatMp3Subtitle => '320kbps, best compatibility';
+
+  @override
+  String get lossyFormatOpusSubtitle =>
+      '128kbps, better quality at smaller size';
 
   @override
   String get qualityNote =>
@@ -1957,6 +1998,39 @@ class AppLocalizationsKo extends AppLocalizations {
   String get queueClearAllMessage =>
       'Are you sure you want to clear all downloads?';
 
+  @override
+  String get queueExportFailed => 'Export';
+
+  @override
+  String get queueExportFailedSuccess =>
+      'Failed downloads exported to TXT file';
+
+  @override
+  String get queueExportFailedClear => 'Clear Failed';
+
+  @override
+  String get queueExportFailedError => 'Failed to export downloads';
+
+  @override
+  String get settingsAutoExportFailed => 'Auto-export failed downloads';
+
+  @override
+  String get settingsAutoExportFailedSubtitle =>
+      'Save failed downloads to TXT file automatically';
+
+  @override
+  String get settingsDownloadNetwork => 'Download Network';
+
+  @override
+  String get settingsDownloadNetworkAny => 'WiFi + Mobile Data';
+
+  @override
+  String get settingsDownloadNetworkWifiOnly => 'WiFi Only';
+
+  @override
+  String get settingsDownloadNetworkSubtitle =>
+      'Choose which network to use for downloads. When set to WiFi Only, downloads will pause on mobile data.';
+
   @override
   String get queueEmpty => 'No downloads in queue';
 
@@ -2006,6 +2080,13 @@ class AppLocalizationsKo extends AppLocalizations {
   @override
   String get albumFolderYearAlbumSubtitle => 'Albums/[2005] Album Name/';
 
+  @override
+  String get albumFolderArtistAlbumSingles => 'Artist / Album + Singles';
+
+  @override
+  String get albumFolderArtistAlbumSinglesSubtitle =>
+      'Artist/Album/ and Artist/Singles/';
+
   @override
   String get downloadedAlbumDeleteSelected => 'Delete Selected';
 
@@ -2148,4 +2229,231 @@ class AppLocalizationsKo extends AppLocalizations {
 
   @override
   String get discographyFailedToFetch => 'Failed to fetch some albums';
+
+  @override
+  String get sectionStorageAccess => 'Storage Access';
+
+  @override
+  String get allFilesAccess => 'All Files Access';
+
+  @override
+  String get allFilesAccessEnabledSubtitle => 'Can write to any folder';
+
+  @override
+  String get allFilesAccessDisabledSubtitle => 'Limited to media folders only';
+
+  @override
+  String get allFilesAccessDescription =>
+      'Enable this if you encounter write errors when saving to custom folders. Android 13+ restricts access to certain directories by default.';
+
+  @override
+  String get allFilesAccessDeniedMessage =>
+      'Permission was denied. Please enable \'All files access\' manually in system settings.';
+
+  @override
+  String get allFilesAccessDisabledMessage =>
+      'All Files Access disabled. The app will use limited storage access.';
+
+  @override
+  String get settingsLocalLibrary => 'Local Library';
+
+  @override
+  String get settingsLocalLibrarySubtitle => 'Scan music & detect duplicates';
+
+  @override
+  String get libraryTitle => 'Local Library';
+
+  @override
+  String get libraryStatus => 'Library Status';
+
+  @override
+  String get libraryScanSettings => 'Scan Settings';
+
+  @override
+  String get libraryEnableLocalLibrary => 'Enable Local Library';
+
+  @override
+  String get libraryEnableLocalLibrarySubtitle =>
+      'Scan and track your existing music';
+
+  @override
+  String get libraryFolder => 'Library Folder';
+
+  @override
+  String get libraryFolderHint => 'Tap to select folder';
+
+  @override
+  String get libraryShowDuplicateIndicator => 'Show Duplicate Indicator';
+
+  @override
+  String get libraryShowDuplicateIndicatorSubtitle =>
+      'Show when searching for existing tracks';
+
+  @override
+  String get libraryActions => 'Actions';
+
+  @override
+  String get libraryScan => 'Scan Library';
+
+  @override
+  String get libraryScanSubtitle => 'Scan for audio files';
+
+  @override
+  String get libraryScanSelectFolderFirst => 'Select a folder first';
+
+  @override
+  String get libraryCleanupMissingFiles => 'Cleanup Missing Files';
+
+  @override
+  String get libraryCleanupMissingFilesSubtitle =>
+      'Remove entries for files that no longer exist';
+
+  @override
+  String get libraryClear => 'Clear Library';
+
+  @override
+  String get libraryClearSubtitle => 'Remove all scanned tracks';
+
+  @override
+  String get libraryClearConfirmTitle => 'Clear Library';
+
+  @override
+  String get libraryClearConfirmMessage =>
+      'This will remove all scanned tracks from your library. Your actual music files will not be deleted.';
+
+  @override
+  String get libraryAbout => 'About Local Library';
+
+  @override
+  String get libraryAboutDescription =>
+      'Scans your existing music collection to detect duplicates when downloading. Supports FLAC, M4A, MP3, Opus, and OGG formats. Metadata is read from file tags when available.';
+
+  @override
+  String libraryTracksCount(int count) {
+    return '$count tracks';
+  }
+
+  @override
+  String libraryLastScanned(String time) {
+    return 'Last scanned: $time';
+  }
+
+  @override
+  String get libraryLastScannedNever => 'Never';
+
+  @override
+  String get libraryScanning => 'Scanning...';
+
+  @override
+  String libraryScanProgress(String progress, int total) {
+    return '$progress% of $total files';
+  }
+
+  @override
+  String get libraryInLibrary => 'In Library';
+
+  @override
+  String libraryRemovedMissingFiles(int count) {
+    return 'Removed $count missing files from library';
+  }
+
+  @override
+  String get libraryCleared => 'Library cleared';
+
+  @override
+  String get libraryStorageAccessRequired => 'Storage Access Required';
+
+  @override
+  String get libraryStorageAccessMessage =>
+      'SpotiFLAC needs storage access to scan your music library. Please grant permission in settings.';
+
+  @override
+  String get libraryFolderNotExist => 'Selected folder does not exist';
+
+  @override
+  String get librarySourceDownloaded => 'Downloaded';
+
+  @override
+  String get librarySourceLocal => 'Local';
+
+  @override
+  String get libraryFilterAll => 'All';
+
+  @override
+  String get libraryFilterDownloaded => 'Downloaded';
+
+  @override
+  String get libraryFilterLocal => 'Local';
+
+  @override
+  String get libraryFilterTitle => 'Filters';
+
+  @override
+  String get libraryFilterReset => 'Reset';
+
+  @override
+  String get libraryFilterApply => 'Apply';
+
+  @override
+  String get libraryFilterSource => 'Source';
+
+  @override
+  String get libraryFilterQuality => 'Quality';
+
+  @override
+  String get libraryFilterQualityHiRes => 'Hi-Res (24bit)';
+
+  @override
+  String get libraryFilterQualityCD => 'CD (16bit)';
+
+  @override
+  String get libraryFilterQualityLossy => 'Lossy';
+
+  @override
+  String get libraryFilterFormat => 'Format';
+
+  @override
+  String get libraryFilterDate => 'Date Added';
+
+  @override
+  String get libraryFilterDateToday => 'Today';
+
+  @override
+  String get libraryFilterDateWeek => 'This Week';
+
+  @override
+  String get libraryFilterDateMonth => 'This Month';
+
+  @override
+  String get libraryFilterDateYear => 'This Year';
+
+  @override
+  String libraryFilterActive(int count) {
+    return '$count filter(s) active';
+  }
+
+  @override
+  String get timeJustNow => 'Just now';
+
+  @override
+  String timeMinutesAgo(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count minutes ago',
+      one: '1 minute ago',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String timeHoursAgo(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count hours ago',
+      one: '1 hour ago',
+    );
+    return '$_temp0';
+  }
 }

lib/l10n/app_localizations_nl.dart

@@ -18,6 +18,9 @@ class AppLocalizationsNl extends AppLocalizations {
   @override
   String get navHome => 'Home';
 
+  @override
+  String get navLibrary => 'Library';
+
   @override
   String get navHistory => 'History';
 
@@ -470,6 +473,10 @@ class AppLocalizationsNl extends AppLocalizations {
   String get aboutSachinsenalDesc =>
       'The original HiFi project creator. The foundation of Tidal integration!';
 
+  @override
+  String get aboutSjdonadoDesc =>
+      'Creator of I Don\'t Have Spotify (IDHS). The fallback link resolver that saves the day!';
+
   @override
   String get aboutDoubleDouble => 'DoubleDouble';
 
@@ -680,6 +687,10 @@ class AppLocalizationsNl extends AppLocalizations {
   String get setupIosEmptyFolderWarning =>
       'iOS limitation: Empty folders cannot be selected. Choose a folder with at least one file.';
 
+  @override
+  String get setupIcloudNotSupported =>
+      'iCloud Drive is not supported. Please use the app Documents folder.';
+
   @override
   String get setupDownloadInFlac => 'Download Spotify tracks in FLAC';
 
@@ -935,6 +946,11 @@ class AppLocalizationsNl extends AppLocalizations {
     return '\"$trackName\" already downloaded';
   }
 
+  @override
+  String snackbarAlreadyInLibrary(String trackName) {
+    return '\"$trackName\" already exists in your library';
+  }
+
   @override
   String get snackbarHistoryCleared => 'History cleared';
 
@@ -1618,6 +1634,15 @@ class AppLocalizationsNl extends AppLocalizations {
   @override
   String get trackLyricsLoadFailed => 'Failed to load lyrics';
 
+  @override
+  String get trackEmbedLyrics => 'Embed Lyrics';
+
+  @override
+  String get trackLyricsEmbedded => 'Lyrics embedded successfully';
+
+  @override
+  String get trackInstrumental => 'Instrumental track';
+
   @override
   String get trackCopiedToClipboard => 'Copied to clipboard';
 
@@ -1847,20 +1872,36 @@ class AppLocalizationsNl extends AppLocalizations {
   String get qualityHiResFlacMaxSubtitle => '24-bit / up to 192kHz';
 
   @override
-  String get qualityMp3 => 'MP3';
+  String get qualityLossy => 'Lossy';
 
   @override
-  String get qualityMp3Subtitle => '320kbps (converted from FLAC)';
+  String get qualityLossyMp3Subtitle => 'MP3 320kbps (converted from FLAC)';
 
   @override
-  String get enableMp3Option => 'Enable MP3 Option';
+  String get qualityLossyOpusSubtitle => 'Opus 128kbps (converted from FLAC)';
 
   @override
-  String get enableMp3OptionSubtitleOn => 'MP3 quality option is available';
+  String get enableLossyOption => 'Enable Lossy Option';
 
   @override
-  String get enableMp3OptionSubtitleOff =>
-      'Downloads FLAC then converts to 320kbps MP3';
+  String get enableLossyOptionSubtitleOn => 'Lossy quality option is available';
+
+  @override
+  String get enableLossyOptionSubtitleOff =>
+      'Downloads FLAC then converts to lossy format';
+
+  @override
+  String get lossyFormat => 'Lossy Format';
+
+  @override
+  String get lossyFormatDescription => 'Choose the lossy format for conversion';
+
+  @override
+  String get lossyFormatMp3Subtitle => '320kbps, best compatibility';
+
+  @override
+  String get lossyFormatOpusSubtitle =>
+      '128kbps, better quality at smaller size';
 
   @override
   String get qualityNote =>
@@ -1957,6 +1998,39 @@ class AppLocalizationsNl extends AppLocalizations {
   String get queueClearAllMessage =>
       'Are you sure you want to clear all downloads?';
 
+  @override
+  String get queueExportFailed => 'Export';
+
+  @override
+  String get queueExportFailedSuccess =>
+      'Failed downloads exported to TXT file';
+
+  @override
+  String get queueExportFailedClear => 'Clear Failed';
+
+  @override
+  String get queueExportFailedError => 'Failed to export downloads';
+
+  @override
+  String get settingsAutoExportFailed => 'Auto-export failed downloads';
+
+  @override
+  String get settingsAutoExportFailedSubtitle =>
+      'Save failed downloads to TXT file automatically';
+
+  @override
+  String get settingsDownloadNetwork => 'Download Network';
+
+  @override
+  String get settingsDownloadNetworkAny => 'WiFi + Mobile Data';
+
+  @override
+  String get settingsDownloadNetworkWifiOnly => 'WiFi Only';
+
+  @override
+  String get settingsDownloadNetworkSubtitle =>
+      'Choose which network to use for downloads. When set to WiFi Only, downloads will pause on mobile data.';
+
   @override
   String get queueEmpty => 'No downloads in queue';
 
@@ -2006,6 +2080,13 @@ class AppLocalizationsNl extends AppLocalizations {
   @override
   String get albumFolderYearAlbumSubtitle => 'Albums/[2005] Album Name/';
 
+  @override
+  String get albumFolderArtistAlbumSingles => 'Artist / Album + Singles';
+
+  @override
+  String get albumFolderArtistAlbumSinglesSubtitle =>
+      'Artist/Album/ and Artist/Singles/';
+
   @override
   String get downloadedAlbumDeleteSelected => 'Delete Selected';
 
@@ -2148,4 +2229,231 @@ class AppLocalizationsNl extends AppLocalizations {
 
   @override
   String get discographyFailedToFetch => 'Failed to fetch some albums';
+
+  @override
+  String get sectionStorageAccess => 'Storage Access';
+
+  @override
+  String get allFilesAccess => 'All Files Access';
+
+  @override
+  String get allFilesAccessEnabledSubtitle => 'Can write to any folder';
+
+  @override
+  String get allFilesAccessDisabledSubtitle => 'Limited to media folders only';
+
+  @override
+  String get allFilesAccessDescription =>
+      'Enable this if you encounter write errors when saving to custom folders. Android 13+ restricts access to certain directories by default.';
+
+  @override
+  String get allFilesAccessDeniedMessage =>
+      'Permission was denied. Please enable \'All files access\' manually in system settings.';
+
+  @override
+  String get allFilesAccessDisabledMessage =>
+      'All Files Access disabled. The app will use limited storage access.';
+
+  @override
+  String get settingsLocalLibrary => 'Local Library';
+
+  @override
+  String get settingsLocalLibrarySubtitle => 'Scan music & detect duplicates';
+
+  @override
+  String get libraryTitle => 'Local Library';
+
+  @override
+  String get libraryStatus => 'Library Status';
+
+  @override
+  String get libraryScanSettings => 'Scan Settings';
+
+  @override
+  String get libraryEnableLocalLibrary => 'Enable Local Library';
+
+  @override
+  String get libraryEnableLocalLibrarySubtitle =>
+      'Scan and track your existing music';
+
+  @override
+  String get libraryFolder => 'Library Folder';
+
+  @override
+  String get libraryFolderHint => 'Tap to select folder';
+
+  @override
+  String get libraryShowDuplicateIndicator => 'Show Duplicate Indicator';
+
+  @override
+  String get libraryShowDuplicateIndicatorSubtitle =>
+      'Show when searching for existing tracks';
+
+  @override
+  String get libraryActions => 'Actions';
+
+  @override
+  String get libraryScan => 'Scan Library';
+
+  @override
+  String get libraryScanSubtitle => 'Scan for audio files';
+
+  @override
+  String get libraryScanSelectFolderFirst => 'Select a folder first';
+
+  @override
+  String get libraryCleanupMissingFiles => 'Cleanup Missing Files';
+
+  @override
+  String get libraryCleanupMissingFilesSubtitle =>
+      'Remove entries for files that no longer exist';
+
+  @override
+  String get libraryClear => 'Clear Library';
+
+  @override
+  String get libraryClearSubtitle => 'Remove all scanned tracks';
+
+  @override
+  String get libraryClearConfirmTitle => 'Clear Library';
+
+  @override
+  String get libraryClearConfirmMessage =>
+      'This will remove all scanned tracks from your library. Your actual music files will not be deleted.';
+
+  @override
+  String get libraryAbout => 'About Local Library';
+
+  @override
+  String get libraryAboutDescription =>
+      'Scans your existing music collection to detect duplicates when downloading. Supports FLAC, M4A, MP3, Opus, and OGG formats. Metadata is read from file tags when available.';
+
+  @override
+  String libraryTracksCount(int count) {
+    return '$count tracks';
+  }
+
+  @override
+  String libraryLastScanned(String time) {
+    return 'Last scanned: $time';
+  }
+
+  @override
+  String get libraryLastScannedNever => 'Never';
+
+  @override
+  String get libraryScanning => 'Scanning...';
+
+  @override
+  String libraryScanProgress(String progress, int total) {
+    return '$progress% of $total files';
+  }
+
+  @override
+  String get libraryInLibrary => 'In Library';
+
+  @override
+  String libraryRemovedMissingFiles(int count) {
+    return 'Removed $count missing files from library';
+  }
+
+  @override
+  String get libraryCleared => 'Library cleared';
+
+  @override
+  String get libraryStorageAccessRequired => 'Storage Access Required';
+
+  @override
+  String get libraryStorageAccessMessage =>
+      'SpotiFLAC needs storage access to scan your music library. Please grant permission in settings.';
+
+  @override
+  String get libraryFolderNotExist => 'Selected folder does not exist';
+
+  @override
+  String get librarySourceDownloaded => 'Downloaded';
+
+  @override
+  String get librarySourceLocal => 'Local';
+
+  @override
+  String get libraryFilterAll => 'All';
+
+  @override
+  String get libraryFilterDownloaded => 'Downloaded';
+
+  @override
+  String get libraryFilterLocal => 'Local';
+
+  @override
+  String get libraryFilterTitle => 'Filters';
+
+  @override
+  String get libraryFilterReset => 'Reset';
+
+  @override
+  String get libraryFilterApply => 'Apply';
+
+  @override
+  String get libraryFilterSource => 'Source';
+
+  @override
+  String get libraryFilterQuality => 'Quality';
+
+  @override
+  String get libraryFilterQualityHiRes => 'Hi-Res (24bit)';
+
+  @override
+  String get libraryFilterQualityCD => 'CD (16bit)';
+
+  @override
+  String get libraryFilterQualityLossy => 'Lossy';
+
+  @override
+  String get libraryFilterFormat => 'Format';
+
+  @override
+  String get libraryFilterDate => 'Date Added';
+
+  @override
+  String get libraryFilterDateToday => 'Today';
+
+  @override
+  String get libraryFilterDateWeek => 'This Week';
+
+  @override
+  String get libraryFilterDateMonth => 'This Month';
+
+  @override
+  String get libraryFilterDateYear => 'This Year';
+
+  @override
+  String libraryFilterActive(int count) {
+    return '$count filter(s) active';
+  }
+
+  @override
+  String get timeJustNow => 'Just now';
+
+  @override
+  String timeMinutesAgo(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count minutes ago',
+      one: '1 minute ago',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String timeHoursAgo(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count hours ago',
+      one: '1 hour ago',
+    );
+    return '$_temp0';
+  }
 }

lib/l10n/app_localizations_ru.dart

@@ -18,6 +18,9 @@ class AppLocalizationsRu extends AppLocalizations {
   @override
   String get navHome => 'Главная';
 
+  @override
+  String get navLibrary => 'Library';
+
   @override
   String get navHistory => 'История';
 
@@ -115,7 +118,7 @@ class AppLocalizationsRu extends AppLocalizations {
       'Здесь будут отображаться загрузки синглов';
 
   @override
-  String get historySearchHint => 'Search history...';
+  String get historySearchHint => 'Поиск в истории...';
 
   @override
   String get settingsTitle => 'Настройки';
@@ -418,7 +421,7 @@ class AppLocalizationsRu extends AppLocalizations {
       'Талантливый художник, который создал наш красивый логотип приложения!';
 
   @override
-  String get aboutTranslators => 'Translators';
+  String get aboutTranslators => 'Переводчики';
 
   @override
   String get aboutSpecialThanks => 'Особая благодарность';
@@ -446,19 +449,19 @@ class AppLocalizationsRu extends AppLocalizations {
       'Предложить новые функции для приложения';
 
   @override
-  String get aboutTelegramChannel => 'Telegram Channel';
+  String get aboutTelegramChannel => 'Telegram канал';
 
   @override
-  String get aboutTelegramChannelSubtitle => 'Announcements and updates';
+  String get aboutTelegramChannelSubtitle => 'Объявления и обновления';
 
   @override
-  String get aboutTelegramChat => 'Telegram Community';
+  String get aboutTelegramChat => 'Сообщество в Telegram';
 
   @override
-  String get aboutTelegramChatSubtitle => 'Chat with other users';
+  String get aboutTelegramChatSubtitle => 'Чат с другими пользователями';
 
   @override
-  String get aboutSocial => 'Social';
+  String get aboutSocial => 'Соцсети';
 
   @override
   String get aboutSupport => 'Поддержка';
@@ -483,6 +486,10 @@ class AppLocalizationsRu extends AppLocalizations {
   String get aboutSachinsenalDesc =>
       'Оригинальный создатель проекта HiFi. Основатель Tidal интеграции!';
 
+  @override
+  String get aboutSjdonadoDesc =>
+      'Creator of I Don\'t Have Spotify (IDHS). The fallback link resolver that saves the day!';
+
   @override
   String get aboutDoubleDouble => 'DoubleDouble';
 
@@ -698,6 +705,10 @@ class AppLocalizationsRu extends AppLocalizations {
   String get setupIosEmptyFolderWarning =>
       'Ограничение iOS: пустые папки не могут быть выбраны. Выберите папку, содержащую хотя бы один файл.';
 
+  @override
+  String get setupIcloudNotSupported =>
+      'iCloud Drive is not supported. Please use the app Documents folder.';
+
   @override
   String get setupDownloadInFlac => 'Скачать Spotify треки во FLAC';
 
@@ -939,7 +950,7 @@ class AppLocalizationsRu extends AppLocalizations {
 
   @override
   String csvImportTracks(int count) {
-    return '$count tracks from CSV';
+    return '$count треков из CSV';
   }
 
   @override
@@ -957,6 +968,11 @@ class AppLocalizationsRu extends AppLocalizations {
     return '\"$trackName\" уже скачан';
   }
 
+  @override
+  String snackbarAlreadyInLibrary(String trackName) {
+    return '\"$trackName\" already exists in your library';
+  }
+
   @override
   String get snackbarHistoryCleared => 'История очищена';
 
@@ -1482,33 +1498,33 @@ class AppLocalizationsRu extends AppLocalizations {
   String get sectionFileSettings => 'Настройки файла';
 
   @override
-  String get sectionLyrics => 'Lyrics';
+  String get sectionLyrics => 'Тексты песен';
 
   @override
-  String get lyricsMode => 'Lyrics Mode';
+  String get lyricsMode => 'Режим текстов песен';
 
   @override
   String get lyricsModeDescription =>
-      'Choose how lyrics are saved with your downloads';
+      'Выберите как сохранить тексты песен при скачивании';
 
   @override
-  String get lyricsModeEmbed => 'Embed in file';
+  String get lyricsModeEmbed => 'Вставить в файл';
 
   @override
-  String get lyricsModeEmbedSubtitle => 'Lyrics stored inside FLAC metadata';
+  String get lyricsModeEmbedSubtitle => 'Встроить текст в метаданные FLAC';
 
   @override
-  String get lyricsModeExternal => 'External .lrc file';
+  String get lyricsModeExternal => 'Внешний файл .lrc';
 
   @override
   String get lyricsModeExternalSubtitle =>
-      'Separate .lrc file for players like Samsung Music';
+      'Отдельный файл .lrc для плееров, таких, как Samsung Music';
 
   @override
-  String get lyricsModeBoth => 'Both';
+  String get lyricsModeBoth => 'Оба варианта';
 
   @override
-  String get lyricsModeBothSubtitle => 'Embed and save .lrc file';
+  String get lyricsModeBothSubtitle => 'Вставить и сохранить файл .lrc';
 
   @override
   String get sectionColor => 'Цвет';
@@ -1627,13 +1643,13 @@ class AppLocalizationsRu extends AppLocalizations {
   String get trackReleaseDate => 'Дата выхода';
 
   @override
-  String get trackGenre => 'Genre';
+  String get trackGenre => 'Жанр';
 
   @override
-  String get trackLabel => 'Label';
+  String get trackLabel => 'Заголовок';
 
   @override
-  String get trackCopyright => 'Copyright';
+  String get trackCopyright => 'Авторские права';
 
   @override
   String get trackDownloaded => 'Скачано';
@@ -1652,6 +1668,15 @@ class AppLocalizationsRu extends AppLocalizations {
   @override
   String get trackLyricsLoadFailed => 'Не удалось загрузить текст песни';
 
+  @override
+  String get trackEmbedLyrics => 'Вставить текст песни';
+
+  @override
+  String get trackLyricsEmbedded => 'Текст успешно добавлен';
+
+  @override
+  String get trackInstrumental => 'Инструментальный трек';
+
   @override
   String get trackCopiedToClipboard => 'Скопировано в буфер обмена';
 
@@ -1885,20 +1910,36 @@ class AppLocalizationsRu extends AppLocalizations {
   String get qualityHiResFlacMaxSubtitle => '24-бит / до 192кГц';
 
   @override
-  String get qualityMp3 => 'MP3';
+  String get qualityLossy => 'Lossy';
 
   @override
-  String get qualityMp3Subtitle => '320kbps (converted from FLAC)';
+  String get qualityLossyMp3Subtitle => 'MP3 320kbps (converted from FLAC)';
 
   @override
-  String get enableMp3Option => 'Enable MP3 Option';
+  String get qualityLossyOpusSubtitle => 'Opus 128kbps (converted from FLAC)';
 
   @override
-  String get enableMp3OptionSubtitleOn => 'MP3 quality option is available';
+  String get enableLossyOption => 'Enable Lossy Option';
 
   @override
-  String get enableMp3OptionSubtitleOff =>
-      'Downloads FLAC then converts to 320kbps MP3';
+  String get enableLossyOptionSubtitleOn => 'Lossy quality option is available';
+
+  @override
+  String get enableLossyOptionSubtitleOff =>
+      'Downloads FLAC then converts to lossy format';
+
+  @override
+  String get lossyFormat => 'Lossy Format';
+
+  @override
+  String get lossyFormatDescription => 'Choose the lossy format for conversion';
+
+  @override
+  String get lossyFormatMp3Subtitle => '320kbps, best compatibility';
+
+  @override
+  String get lossyFormatOpusSubtitle =>
+      '128kbps, better quality at smaller size';
 
   @override
   String get qualityNote =>
@@ -1996,6 +2037,39 @@ class AppLocalizationsRu extends AppLocalizations {
   String get queueClearAllMessage =>
       'Вы уверены, что хотите очистить все загрузки?';
 
+  @override
+  String get queueExportFailed => 'Export';
+
+  @override
+  String get queueExportFailedSuccess =>
+      'Failed downloads exported to TXT file';
+
+  @override
+  String get queueExportFailedClear => 'Clear Failed';
+
+  @override
+  String get queueExportFailedError => 'Failed to export downloads';
+
+  @override
+  String get settingsAutoExportFailed => 'Auto-export failed downloads';
+
+  @override
+  String get settingsAutoExportFailedSubtitle =>
+      'Save failed downloads to TXT file automatically';
+
+  @override
+  String get settingsDownloadNetwork => 'Download Network';
+
+  @override
+  String get settingsDownloadNetworkAny => 'WiFi + Mobile Data';
+
+  @override
+  String get settingsDownloadNetworkWifiOnly => 'WiFi Only';
+
+  @override
+  String get settingsDownloadNetworkSubtitle =>
+      'Choose which network to use for downloads. When set to WiFi Only, downloads will pause on mobile data.';
+
   @override
   String get queueEmpty => 'Нет загрузок в очереди';
 
@@ -2047,6 +2121,13 @@ class AppLocalizationsRu extends AppLocalizations {
   String get albumFolderYearAlbumSubtitle =>
       'Альбомы/[2005] Название Альбома /';
 
+  @override
+  String get albumFolderArtistAlbumSingles => 'Исполнитель / Альбом + Синглы';
+
+  @override
+  String get albumFolderArtistAlbumSinglesSubtitle =>
+      'Исполнитель/Альбом и Исполнитель/Сингл/';
+
   @override
   String get downloadedAlbumDeleteSelected => 'Удалить выбранные';
 
@@ -2100,7 +2181,7 @@ class AppLocalizationsRu extends AppLocalizations {
 
   @override
   String downloadedAlbumDiscHeader(int discNumber) {
-    return 'Disc $discNumber';
+    return 'Диск $discNumber';
   }
 
   @override
@@ -2129,68 +2210,296 @@ class AppLocalizationsRu extends AppLocalizations {
   }
 
   @override
-  String get discographyDownload => 'Download Discography';
+  String get discographyDownload => 'Скачать дискографию';
 
   @override
-  String get discographyDownloadAll => 'Download All';
+  String get discographyDownloadAll => 'Скачать всё';
 
   @override
   String discographyDownloadAllSubtitle(int count, int albumCount) {
-    return '$count tracks from $albumCount releases';
+    return '$count треков из $albumCount релизов';
   }
 
   @override
-  String get discographyAlbumsOnly => 'Albums Only';
+  String get discographyAlbumsOnly => 'Только альбомы';
 
   @override
   String discographyAlbumsOnlySubtitle(int count, int albumCount) {
-    return '$count tracks from $albumCount albums';
+    return '$count треков из $albumCount альбомов';
   }
 
   @override
-  String get discographySinglesOnly => 'Singles & EPs Only';
+  String get discographySinglesOnly => 'Только синглы и EP';
 
   @override
   String discographySinglesOnlySubtitle(int count, int albumCount) {
-    return '$count tracks from $albumCount singles';
+    return '$count треков из $albumCount синглов';
   }
 
   @override
-  String get discographySelectAlbums => 'Select Albums...';
+  String get discographySelectAlbums => 'Выбрать альбомы...';
 
   @override
   String get discographySelectAlbumsSubtitle =>
-      'Choose specific albums or singles';
+      'Выберите конкретные альбомы или синглы';
 
   @override
-  String get discographyFetchingTracks => 'Fetching tracks...';
+  String get discographyFetchingTracks => 'Получение треков...';
 
   @override
   String discographyFetchingAlbum(int current, int total) {
-    return 'Fetching $current of $total...';
+    return 'Получение $current из $total...';
   }
 
   @override
   String discographySelectedCount(int count) {
-    return '$count selected';
+    return '$count выбрано';
   }
 
   @override
-  String get discographyDownloadSelected => 'Download Selected';
+  String get discographyDownloadSelected => 'Скачать выбранное';
 
   @override
   String discographyAddedToQueue(int count) {
-    return 'Added $count tracks to queue';
+    return 'Добавлено $count треков в очередь';
   }
 
   @override
   String discographySkippedDownloaded(int added, int skipped) {
-    return '$added added, $skipped already downloaded';
+    return '$added добавлено, $skipped уже скачано';
   }
 
   @override
-  String get discographyNoAlbums => 'No albums available';
+  String get discographyNoAlbums => 'Нет доступных альбомов';
 
   @override
-  String get discographyFailedToFetch => 'Failed to fetch some albums';
+  String get discographyFailedToFetch =>
+      'Не удалось получить некоторые альбомы';
+
+  @override
+  String get sectionStorageAccess => 'Storage Access';
+
+  @override
+  String get allFilesAccess => 'All Files Access';
+
+  @override
+  String get allFilesAccessEnabledSubtitle => 'Can write to any folder';
+
+  @override
+  String get allFilesAccessDisabledSubtitle => 'Limited to media folders only';
+
+  @override
+  String get allFilesAccessDescription =>
+      'Enable this if you encounter write errors when saving to custom folders. Android 13+ restricts access to certain directories by default.';
+
+  @override
+  String get allFilesAccessDeniedMessage =>
+      'Permission was denied. Please enable \'All files access\' manually in system settings.';
+
+  @override
+  String get allFilesAccessDisabledMessage =>
+      'All Files Access disabled. The app will use limited storage access.';
+
+  @override
+  String get settingsLocalLibrary => 'Local Library';
+
+  @override
+  String get settingsLocalLibrarySubtitle => 'Scan music & detect duplicates';
+
+  @override
+  String get libraryTitle => 'Local Library';
+
+  @override
+  String get libraryStatus => 'Library Status';
+
+  @override
+  String get libraryScanSettings => 'Scan Settings';
+
+  @override
+  String get libraryEnableLocalLibrary => 'Enable Local Library';
+
+  @override
+  String get libraryEnableLocalLibrarySubtitle =>
+      'Scan and track your existing music';
+
+  @override
+  String get libraryFolder => 'Library Folder';
+
+  @override
+  String get libraryFolderHint => 'Tap to select folder';
+
+  @override
+  String get libraryShowDuplicateIndicator => 'Show Duplicate Indicator';
+
+  @override
+  String get libraryShowDuplicateIndicatorSubtitle =>
+      'Show when searching for existing tracks';
+
+  @override
+  String get libraryActions => 'Actions';
+
+  @override
+  String get libraryScan => 'Scan Library';
+
+  @override
+  String get libraryScanSubtitle => 'Scan for audio files';
+
+  @override
+  String get libraryScanSelectFolderFirst => 'Select a folder first';
+
+  @override
+  String get libraryCleanupMissingFiles => 'Cleanup Missing Files';
+
+  @override
+  String get libraryCleanupMissingFilesSubtitle =>
+      'Remove entries for files that no longer exist';
+
+  @override
+  String get libraryClear => 'Clear Library';
+
+  @override
+  String get libraryClearSubtitle => 'Remove all scanned tracks';
+
+  @override
+  String get libraryClearConfirmTitle => 'Clear Library';
+
+  @override
+  String get libraryClearConfirmMessage =>
+      'This will remove all scanned tracks from your library. Your actual music files will not be deleted.';
+
+  @override
+  String get libraryAbout => 'About Local Library';
+
+  @override
+  String get libraryAboutDescription =>
+      'Scans your existing music collection to detect duplicates when downloading. Supports FLAC, M4A, MP3, Opus, and OGG formats. Metadata is read from file tags when available.';
+
+  @override
+  String libraryTracksCount(int count) {
+    return '$count tracks';
+  }
+
+  @override
+  String libraryLastScanned(String time) {
+    return 'Last scanned: $time';
+  }
+
+  @override
+  String get libraryLastScannedNever => 'Never';
+
+  @override
+  String get libraryScanning => 'Scanning...';
+
+  @override
+  String libraryScanProgress(String progress, int total) {
+    return '$progress% of $total files';
+  }
+
+  @override
+  String get libraryInLibrary => 'In Library';
+
+  @override
+  String libraryRemovedMissingFiles(int count) {
+    return 'Removed $count missing files from library';
+  }
+
+  @override
+  String get libraryCleared => 'Library cleared';
+
+  @override
+  String get libraryStorageAccessRequired => 'Storage Access Required';
+
+  @override
+  String get libraryStorageAccessMessage =>
+      'SpotiFLAC needs storage access to scan your music library. Please grant permission in settings.';
+
+  @override
+  String get libraryFolderNotExist => 'Selected folder does not exist';
+
+  @override
+  String get librarySourceDownloaded => 'Downloaded';
+
+  @override
+  String get librarySourceLocal => 'Local';
+
+  @override
+  String get libraryFilterAll => 'All';
+
+  @override
+  String get libraryFilterDownloaded => 'Downloaded';
+
+  @override
+  String get libraryFilterLocal => 'Local';
+
+  @override
+  String get libraryFilterTitle => 'Filters';
+
+  @override
+  String get libraryFilterReset => 'Reset';
+
+  @override
+  String get libraryFilterApply => 'Apply';
+
+  @override
+  String get libraryFilterSource => 'Source';
+
+  @override
+  String get libraryFilterQuality => 'Quality';
+
+  @override
+  String get libraryFilterQualityHiRes => 'Hi-Res (24bit)';
+
+  @override
+  String get libraryFilterQualityCD => 'CD (16bit)';
+
+  @override
+  String get libraryFilterQualityLossy => 'Lossy';
+
+  @override
+  String get libraryFilterFormat => 'Format';
+
+  @override
+  String get libraryFilterDate => 'Date Added';
+
+  @override
+  String get libraryFilterDateToday => 'Today';
+
+  @override
+  String get libraryFilterDateWeek => 'This Week';
+
+  @override
+  String get libraryFilterDateMonth => 'This Month';
+
+  @override
+  String get libraryFilterDateYear => 'This Year';
+
+  @override
+  String libraryFilterActive(int count) {
+    return '$count filter(s) active';
+  }
+
+  @override
+  String get timeJustNow => 'Just now';
+
+  @override
+  String timeMinutesAgo(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count minutes ago',
+      one: '1 minute ago',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String timeHoursAgo(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count hours ago',
+      one: '1 hour ago',
+    );
+    return '$_temp0';
+  }
 }

lib/l10n/arb/app_de.arb

@@ -127,6 +127,10 @@
   "@historyNoSinglesSubtitle": {
     "description": "Empty state subtitle for singles filter"
   },
+  "historySearchHint": "Suchverlauf...",
+  "@historySearchHint": {
+    "description": "Search bar placeholder in history"
+  },
   "settingsTitle": "Einstellungen",
   "@settingsTitle": {
     "description": "Settings screen title"
@@ -512,6 +516,10 @@
   "@aboutLogoArtist": {
     "description": "Role description for logo artist"
   },
+  "aboutTranslators": "Übersetzer",
+  "@aboutTranslators": {
+    "description": "Section for translators"
+  },
   "aboutSpecialThanks": "Besonderer Dank",
   "@aboutSpecialThanks": {
     "description": "Section for special thanks"
@@ -544,6 +552,26 @@
   "@aboutFeatureRequestSubtitle": {
     "description": "Subtitle for feature request"
   },
+  "aboutTelegramChannel": "Telegram Kanal",
+  "@aboutTelegramChannel": {
+    "description": "Link to Telegram channel"
+  },
+  "aboutTelegramChannelSubtitle": "Ankündigungen und Updates",
+  "@aboutTelegramChannelSubtitle": {
+    "description": "Subtitle for Telegram channel"
+  },
+  "aboutTelegramChat": "Telegram Community",
+  "@aboutTelegramChat": {
+    "description": "Link to Telegram chat group"
+  },
+  "aboutTelegramChatSubtitle": "Mit anderen Nutzern chatten",
+  "@aboutTelegramChatSubtitle": {
+    "description": "Subtitle for Telegram chat"
+  },
+  "aboutSocial": "Sozial",
+  "@aboutSocial": {
+    "description": "Section for social links"
+  },
   "aboutSupport": "Support",
   "@aboutSupport": {
     "description": "Section for support/donation links"
@@ -588,7 +616,7 @@
   "@aboutDabMusicDesc": {
     "description": "Credit for DAB Music API"
   },
-  "aboutAppDescription": "Download Spotify tracks in lossless quality from Tidal, Qobuz, and Amazon Music.",
+  "aboutAppDescription": "Lade Spotify-Titel in verlustfreier Qualität von Tidal, Qobuz und Amazon Music herunter.",
   "@aboutAppDescription": {
     "description": "App description in header card"
   },
@@ -596,7 +624,7 @@
   "@albumTitle": {
     "description": "Album screen title"
   },
-  "albumTracks": "{count, plural, =1{1 track} other{{count} tracks}}",
+  "albumTracks": "{count, plural,=1{1 Song} other{{count} Songs}}",
   "@albumTracks": {
     "description": "Album track count",
     "placeholders": {
@@ -605,11 +633,11 @@
       }
     }
   },
-  "albumDownloadAll": "Download All",
+  "albumDownloadAll": "Alle Herunterladen",
   "@albumDownloadAll": {
     "description": "Button to download all tracks"
   },
-  "albumDownloadRemaining": "Download Remaining",
+  "albumDownloadRemaining": "Downloads verbleibend",
   "@albumDownloadRemaining": {
     "description": "Button to download remaining tracks"
   },
@@ -617,11 +645,11 @@
   "@playlistTitle": {
     "description": "Playlist screen title"
   },
-  "artistTitle": "Artist",
+  "artistTitle": "Künstler",
   "@artistTitle": {
     "description": "Artist screen title"
   },
-  "artistAlbums": "Albums",
+  "artistAlbums": "Alben",
   "@artistAlbums": {
     "description": "Section header for artist albums"
   },
@@ -629,11 +657,11 @@
   "@artistSingles": {
     "description": "Section header for singles/EPs"
   },
-  "artistCompilations": "Compilations",
+  "artistCompilations": "Zusammenstellungen",
   "@artistCompilations": {
     "description": "Section header for compilations"
   },
-  "artistReleases": "{count, plural, =1{1 release} other{{count} releases}}",
+  "artistReleases": "{count, plural,=1{1 Veröffentlichung} other{{count} Veröffentlichungen}}",
   "@artistReleases": {
     "description": "Artist release count",
     "placeholders": {
@@ -642,11 +670,11 @@
       }
     }
   },
-  "artistPopular": "Popular",
+  "artistPopular": "Beliebt",
   "@artistPopular": {
     "description": "Section header for popular/top tracks"
   },
-  "artistMonthlyListeners": "{count} monthly listeners",
+  "artistMonthlyListeners": "{count} monatliche Hörer",
   "@artistMonthlyListeners": {
     "description": "Monthly listener count display",
     "placeholders": {
@@ -656,11 +684,11 @@
       }
     }
   },
-  "trackMetadataTitle": "Track Info",
+  "trackMetadataTitle": "Titel Info",
   "@trackMetadataTitle": {
     "description": "Track metadata screen title"
   },
-  "trackMetadataArtist": "Artist",
+  "trackMetadataArtist": "Künstler",
   "@trackMetadataArtist": {
     "description": "Metadata field - artist name"
   },
@@ -668,111 +696,111 @@
   "@trackMetadataAlbum": {
     "description": "Metadata field - album name"
   },
-  "trackMetadataDuration": "Duration",
+  "trackMetadataDuration": "Länge",
   "@trackMetadataDuration": {
     "description": "Metadata field - track length"
   },
-  "trackMetadataQuality": "Quality",
+  "trackMetadataQuality": "Qualität",
   "@trackMetadataQuality": {
     "description": "Metadata field - audio quality"
   },
-  "trackMetadataPath": "File Path",
+  "trackMetadataPath": "Dateipfad",
   "@trackMetadataPath": {
     "description": "Metadata field - file location"
   },
-  "trackMetadataDownloadedAt": "Downloaded",
+  "trackMetadataDownloadedAt": "Heruntergeladen",
   "@trackMetadataDownloadedAt": {
     "description": "Metadata field - download date"
   },
-  "trackMetadataService": "Service",
+  "trackMetadataService": "Anbieter",
   "@trackMetadataService": {
     "description": "Metadata field - download service used"
   },
-  "trackMetadataPlay": "Play",
+  "trackMetadataPlay": "Abspielen",
   "@trackMetadataPlay": {
     "description": "Action button - play track"
   },
-  "trackMetadataShare": "Share",
+  "trackMetadataShare": "Teilen",
   "@trackMetadataShare": {
     "description": "Action button - share track"
   },
-  "trackMetadataDelete": "Delete",
+  "trackMetadataDelete": "Löschen",
   "@trackMetadataDelete": {
     "description": "Action button - delete track"
   },
-  "trackMetadataRedownload": "Re-download",
+  "trackMetadataRedownload": "Erneut herunterladen",
   "@trackMetadataRedownload": {
     "description": "Action button - download again"
   },
-  "trackMetadataOpenFolder": "Open Folder",
+  "trackMetadataOpenFolder": "Ordner öffnen",
   "@trackMetadataOpenFolder": {
     "description": "Action button - open containing folder"
   },
-  "setupTitle": "Welcome to SpotiFLAC",
+  "setupTitle": "Willkommen bei SpotiFLAC",
   "@setupTitle": {
     "description": "Setup wizard title"
   },
-  "setupSubtitle": "Let's get you started",
+  "setupSubtitle": "Los geht's",
   "@setupSubtitle": {
     "description": "Setup wizard subtitle"
   },
-  "setupStoragePermission": "Storage Permission",
+  "setupStoragePermission": "Speicherberechtigung",
   "@setupStoragePermission": {
     "description": "Storage permission step title"
   },
-  "setupStoragePermissionSubtitle": "Required to save downloaded files",
+  "setupStoragePermissionSubtitle": "Benötigt um heruntergeladene Dateien zu Speichern",
   "@setupStoragePermissionSubtitle": {
     "description": "Explanation for storage permission"
   },
-  "setupStoragePermissionGranted": "Permission granted",
+  "setupStoragePermissionGranted": "Berechtigung erteilt",
   "@setupStoragePermissionGranted": {
     "description": "Status when permission granted"
   },
-  "setupStoragePermissionDenied": "Permission denied",
+  "setupStoragePermissionDenied": "Berechtigung verweigert",
   "@setupStoragePermissionDenied": {
     "description": "Status when permission denied"
   },
-  "setupGrantPermission": "Grant Permission",
+  "setupGrantPermission": "Berechtigung erlauben",
   "@setupGrantPermission": {
     "description": "Button to request permission"
   },
-  "setupDownloadLocation": "Download Location",
+  "setupDownloadLocation": "Speicherort",
   "@setupDownloadLocation": {
     "description": "Download folder step title"
   },
-  "setupChooseFolder": "Choose Folder",
+  "setupChooseFolder": "Ordner wählen",
   "@setupChooseFolder": {
     "description": "Button to pick folder"
   },
-  "setupContinue": "Continue",
+  "setupContinue": "Fortfahren",
   "@setupContinue": {
     "description": "Continue to next step button"
   },
-  "setupSkip": "Skip for now",
+  "setupSkip": "Vorerst überspringen",
   "@setupSkip": {
     "description": "Skip current step button"
   },
-  "setupStorageAccessRequired": "Storage Access Required",
+  "setupStorageAccessRequired": "Speicherzugriff erforderlich",
   "@setupStorageAccessRequired": {
     "description": "Title when storage access needed"
   },
-  "setupStorageAccessMessage": "SpotiFLAC needs \"All files access\" permission to save music files to your chosen folder.",
+  "setupStorageAccessMessage": "SpotiFLAC benötigt die Berechtigung \"Auf alle Dateien zugreifen\", um Musikdateien in deinen gewählten Ordner zu speichern.",
   "@setupStorageAccessMessage": {
     "description": "Explanation for storage access"
   },
-  "setupStorageAccessMessageAndroid11": "Android 11+ requires \"All files access\" permission to save files to your chosen download folder.",
+  "setupStorageAccessMessageAndroid11": "Android 11+ benötigt die Berechtigung „Auf alle Dateien“, um Dateien im ausgewählten Download-Ordner zu speichern.",
   "@setupStorageAccessMessageAndroid11": {
     "description": "Android 11+ specific explanation"
   },
-  "setupOpenSettings": "Open Settings",
+  "setupOpenSettings": "Einstellungen öffnen",
   "@setupOpenSettings": {
     "description": "Button to open system settings"
   },
-  "setupPermissionDeniedMessage": "Permission denied. Please grant all permissions to continue.",
+  "setupPermissionDeniedMessage": "Berechtigung verweigert. Bitte erteilen Sie alle Berechtigungen um fortzufahren.",
   "@setupPermissionDeniedMessage": {
     "description": "Error when permission denied"
   },
-  "setupPermissionRequired": "{permissionType} Permission Required",
+  "setupPermissionRequired": "{permissionType} Zugriff verweigert",
   "@setupPermissionRequired": {
     "description": "Generic permission required title",
     "placeholders": {
@@ -782,7 +810,7 @@
       }
     }
   },
-  "setupPermissionRequiredMessage": "{permissionType} permission is required for the best experience. You can change this later in Settings.",
+  "setupPermissionRequiredMessage": "{permissionType} Berechtigung ist erforderlich für\ndie beste Benutzererfahrung. Für kannst dies später in den Einstellungen ändern.",
   "@setupPermissionRequiredMessage": {
     "description": "Generic permission required message",
     "placeholders": {
@@ -791,63 +819,63 @@
       }
     }
   },
-  "setupSelectDownloadFolder": "Select Download Folder",
+  "setupSelectDownloadFolder": "Wähle Download-Ordner aus",
   "@setupSelectDownloadFolder": {
     "description": "Folder selection step title"
   },
-  "setupUseDefaultFolder": "Use Default Folder?",
+  "setupUseDefaultFolder": "Als Standardordner verwenden?",
   "@setupUseDefaultFolder": {
     "description": "Dialog title for default folder"
   },
-  "setupNoFolderSelected": "No folder selected. Would you like to use the default Music folder?",
+  "setupNoFolderSelected": "Kein Ordner ausgewählt. Soll der Standard-Musikordner verwendet werden?",
   "@setupNoFolderSelected": {
     "description": "Prompt when no folder selected"
   },
-  "setupUseDefault": "Use Default",
+  "setupUseDefault": "Standart benutzen",
   "@setupUseDefault": {
     "description": "Button to use default folder"
   },
-  "setupDownloadLocationTitle": "Download Location",
+  "setupDownloadLocationTitle": "Speicherort",
   "@setupDownloadLocationTitle": {
     "description": "Download location dialog title"
   },
-  "setupDownloadLocationIosMessage": "On iOS, downloads are saved to the app's Documents folder. You can access them via the Files app.",
+  "setupDownloadLocationIosMessage": "Auf iOS werden Downloads im Dokumentenverzeichnis der App gespeichert. Sie können sie über die Datei-App aufrufen.",
   "@setupDownloadLocationIosMessage": {
     "description": "iOS-specific folder info"
   },
-  "setupAppDocumentsFolder": "App Documents Folder",
+  "setupAppDocumentsFolder": "App-Dokumentenordner",
   "@setupAppDocumentsFolder": {
     "description": "iOS documents folder option"
   },
-  "setupAppDocumentsFolderSubtitle": "Recommended - accessible via Files app",
+  "setupAppDocumentsFolderSubtitle": "Empfohlen - zugänglich über die Datei-App",
   "@setupAppDocumentsFolderSubtitle": {
     "description": "Subtitle for documents folder"
   },
-  "setupChooseFromFiles": "Choose from Files",
+  "setupChooseFromFiles": "Aus Dateien auswählen",
   "@setupChooseFromFiles": {
     "description": "iOS file picker option"
   },
-  "setupChooseFromFilesSubtitle": "Select iCloud or other location",
+  "setupChooseFromFilesSubtitle": "Wählen Sie iCloud oder einen anderen Ort",
   "@setupChooseFromFilesSubtitle": {
     "description": "Subtitle for file picker"
   },
-  "setupIosEmptyFolderWarning": "iOS limitation: Empty folders cannot be selected. Choose a folder with at least one file.",
+  "setupIosEmptyFolderWarning": "iOS-Einschränkung: Leere Ordner können nicht ausgewählt werden. Wählen Sie einen Ordner mit mindestens einer Datei.",
   "@setupIosEmptyFolderWarning": {
     "description": "iOS folder selection warning"
   },
-  "setupDownloadInFlac": "Download Spotify tracks in FLAC",
+  "setupDownloadInFlac": "Spotify Titel in FLAC herunterladen",
   "@setupDownloadInFlac": {
     "description": "App tagline in setup"
   },
-  "setupStepStorage": "Storage",
+  "setupStepStorage": "Speicherort",
   "@setupStepStorage": {
     "description": "Setup step indicator - storage"
   },
-  "setupStepNotification": "Notification",
+  "setupStepNotification": "Benachrichtigung",
   "@setupStepNotification": {
     "description": "Setup step indicator - notification"
   },
-  "setupStepFolder": "Folder",
+  "setupStepFolder": "Ordner",
   "@setupStepFolder": {
     "description": "Setup step indicator - folder"
   },
@@ -855,55 +883,55 @@
   "@setupStepSpotify": {
     "description": "Setup step indicator - Spotify API"
   },
-  "setupStepPermission": "Permission",
+  "setupStepPermission": "Berechtigung",
   "@setupStepPermission": {
     "description": "Setup step indicator - permission"
   },
-  "setupStorageGranted": "Storage Permission Granted!",
+  "setupStorageGranted": "Speicherberechtigung erlaubt!",
   "@setupStorageGranted": {
     "description": "Success message for storage permission"
   },
-  "setupStorageRequired": "Storage Permission Required",
+  "setupStorageRequired": "Speicherzugriff erforderlich",
   "@setupStorageRequired": {
     "description": "Title when storage permission needed"
   },
-  "setupStorageDescription": "SpotiFLAC needs storage permission to save your downloaded music files.",
+  "setupStorageDescription": "SpotiFLAC benötigt Speicherrechte, um die heruntergeladenen Musikdateien zu speichern.",
   "@setupStorageDescription": {
     "description": "Explanation for storage permission"
   },
-  "setupNotificationGranted": "Notification Permission Granted!",
+  "setupNotificationGranted": "Benachrichtigungs-Berechtigung erteilt",
   "@setupNotificationGranted": {
     "description": "Success message for notification permission"
   },
-  "setupNotificationEnable": "Enable Notifications",
+  "setupNotificationEnable": "Benachrichtigungen aktivieren",
   "@setupNotificationEnable": {
     "description": "Button to enable notifications"
   },
-  "setupNotificationDescription": "Get notified when downloads complete or require attention.",
+  "setupNotificationDescription": "Benachrichtigt werden, wenn Downloads abgeschlossen sind.",
   "@setupNotificationDescription": {
     "description": "Explanation for notifications"
   },
-  "setupFolderSelected": "Download Folder Selected!",
+  "setupFolderSelected": "Download Ordner ausgewählt!",
   "@setupFolderSelected": {
     "description": "Success message for folder selection"
   },
-  "setupFolderChoose": "Choose Download Folder",
+  "setupFolderChoose": "Speicherort auwählen",
   "@setupFolderChoose": {
     "description": "Button to choose folder"
   },
-  "setupFolderDescription": "Select a folder where your downloaded music will be saved.",
+  "setupFolderDescription": "Wählen Sie einen Ordner, in dem Ihre heruntergeladene Musik gespeichert wird.",
   "@setupFolderDescription": {
     "description": "Explanation for folder selection"
   },
-  "setupChangeFolder": "Change Folder",
+  "setupChangeFolder": "Ordner ändern",
   "@setupChangeFolder": {
     "description": "Button to change selected folder"
   },
-  "setupSelectFolder": "Select Folder",
+  "setupSelectFolder": "Ordner wählen",
   "@setupSelectFolder": {
     "description": "Button to select folder"
   },
-  "setupSpotifyApiOptional": "Spotify API (Optional)",
+  "setupSpotifyApiOptional": "Spotify-API (optional)",
   "@setupSpotifyApiOptional": {
     "description": "Spotify API step title"
   },
@@ -1122,6 +1150,15 @@
     "description": "Dialog title - import CSV playlist"
   },
   "dialogImportPlaylistMessage": "Found {count} tracks in CSV. Add them to download queue?",
+  "csvImportTracks": "{count} tracks from CSV",
+  "@csvImportTracks": {
+    "description": "Label shown in quality picker for CSV import",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
   "@dialogImportPlaylistMessage": {
     "description": "Dialog message - import playlist confirmation",
     "placeholders": {
@@ -1851,6 +1888,42 @@
   "@sectionFileSettings": {
     "description": "Settings section header"
   },
+  "sectionLyrics": "Lyrics",
+  "@sectionLyrics": {
+    "description": "Settings section header"
+  },
+  "lyricsMode": "Lyrics Mode",
+  "@lyricsMode": {
+    "description": "Setting - how to save lyrics"
+  },
+  "lyricsModeDescription": "Choose how lyrics are saved with your downloads",
+  "@lyricsModeDescription": {
+    "description": "Lyrics mode picker description"
+  },
+  "lyricsModeEmbed": "Embed in file",
+  "@lyricsModeEmbed": {
+    "description": "Lyrics mode option - embed in audio file"
+  },
+  "lyricsModeEmbedSubtitle": "Lyrics stored inside FLAC metadata",
+  "@lyricsModeEmbedSubtitle": {
+    "description": "Subtitle for embed option"
+  },
+  "lyricsModeExternal": "External .lrc file",
+  "@lyricsModeExternal": {
+    "description": "Lyrics mode option - separate LRC file"
+  },
+  "lyricsModeExternalSubtitle": "Separate .lrc file for players like Samsung Music",
+  "@lyricsModeExternalSubtitle": {
+    "description": "Subtitle for external option"
+  },
+  "lyricsModeBoth": "Both",
+  "@lyricsModeBoth": {
+    "description": "Lyrics mode option - embed and external"
+  },
+  "lyricsModeBothSubtitle": "Embed and save .lrc file",
+  "@lyricsModeBothSubtitle": {
+    "description": "Subtitle for both option"
+  },
   "sectionColor": "Color",
   "@sectionColor": {
     "description": "Settings section header"
@@ -1997,6 +2070,18 @@
   "@trackReleaseDate": {
     "description": "Metadata label - release date"
   },
+  "trackGenre": "Genre",
+  "@trackGenre": {
+    "description": "Metadata label - music genre"
+  },
+  "trackLabel": "Label",
+  "@trackLabel": {
+    "description": "Metadata label - record label"
+  },
+  "trackCopyright": "Copyright",
+  "@trackCopyright": {
+    "description": "Metadata label - copyright information"
+  },
   "trackDownloaded": "Downloaded",
   "@trackDownloaded": {
     "description": "Metadata label - download date"
@@ -2017,6 +2102,18 @@
   "@trackLyricsLoadFailed": {
     "description": "Message when lyrics loading fails"
   },
+  "trackEmbedLyrics": "Embed Lyrics",
+  "@trackEmbedLyrics": {
+    "description": "Action - embed lyrics into audio file"
+  },
+  "trackLyricsEmbedded": "Lyrics embedded successfully",
+  "@trackLyricsEmbedded": {
+    "description": "Snackbar - lyrics saved to file"
+  },
+  "trackInstrumental": "Instrumental track",
+  "@trackInstrumental": {
+    "description": "Message when track is instrumental (no lyrics)"
+  },
   "trackCopiedToClipboard": "Copied to clipboard",
   "@trackCopiedToClipboard": {
     "description": "Snackbar - content copied"
@@ -2328,6 +2425,26 @@
   "@qualityHiResFlacMaxSubtitle": {
     "description": "Technical spec for hi-res max"
   },
+  "qualityMp3": "MP3",
+  "@qualityMp3": {
+    "description": "Quality option - MP3 lossy format"
+  },
+  "qualityMp3Subtitle": "320kbps (converted from FLAC)",
+  "@qualityMp3Subtitle": {
+    "description": "Technical spec for MP3"
+  },
+  "enableMp3Option": "Enable MP3 Option",
+  "@enableMp3Option": {
+    "description": "Setting - enable MP3 quality option"
+  },
+  "enableMp3OptionSubtitleOn": "MP3 quality option is available",
+  "@enableMp3OptionSubtitleOn": {
+    "description": "Subtitle when MP3 is enabled"
+  },
+  "enableMp3OptionSubtitleOff": "Downloads FLAC then converts to 320kbps MP3",
+  "@enableMp3OptionSubtitleOff": {
+    "description": "Subtitle when MP3 is disabled"
+  },
   "qualityNote": "Actual quality depends on track availability from the service",
   "@qualityNote": {
     "description": "Note about quality availability"
@@ -2516,6 +2633,14 @@
   "@albumFolderYearAlbumSubtitle": {
     "description": "Folder structure example"
   },
+  "albumFolderArtistAlbumSingles": "Artist / Album + Singles",
+  "@albumFolderArtistAlbumSingles": {
+    "description": "Album folder option with singles inside artist"
+  },
+  "albumFolderArtistAlbumSinglesSubtitle": "Artist/Album/ and Artist/Singles/",
+  "@albumFolderArtistAlbumSinglesSubtitle": {
+    "description": "Folder structure example"
+  },
   "downloadedAlbumDeleteSelected": "Delete Selected",
   "@downloadedAlbumDeleteSelected": {
     "description": "Button - delete selected tracks"
@@ -2572,6 +2697,16 @@
   "@downloadedAlbumSelectToDelete": {
     "description": "Placeholder when nothing selected"
   },
+  "downloadedAlbumDiscHeader": "Disc {discNumber}",
+  "@downloadedAlbumDiscHeader": {
+    "description": "Header for disc separator in multi-disc albums",
+    "placeholders": {
+      "discNumber": {
+        "type": "int",
+        "example": "1"
+      }
+    }
+  },
   "utilityFunctions": "Utility Functions",
   "@utilityFunctions": {
     "description": "Extension capability - utility functions"
@@ -2611,5 +2746,123 @@
         "description": "Error message"
       }
     }
+  },
+  "discographyDownload": "Download Discography",
+  "@discographyDownload": {
+    "description": "Button - download artist discography"
+  },
+  "discographyDownloadAll": "Download All",
+  "@discographyDownloadAll": {
+    "description": "Option - download entire discography"
+  },
+  "discographyDownloadAllSubtitle": "{count} tracks from {albumCount} releases",
+  "@discographyDownloadAllSubtitle": {
+    "description": "Subtitle showing total tracks and albums",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyAlbumsOnly": "Albums Only",
+  "@discographyAlbumsOnly": {
+    "description": "Option - download only albums"
+  },
+  "discographyAlbumsOnlySubtitle": "{count} tracks from {albumCount} albums",
+  "@discographyAlbumsOnlySubtitle": {
+    "description": "Subtitle showing album tracks count",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySinglesOnly": "Singles & EPs Only",
+  "@discographySinglesOnly": {
+    "description": "Option - download only singles"
+  },
+  "discographySinglesOnlySubtitle": "{count} tracks from {albumCount} singles",
+  "@discographySinglesOnlySubtitle": {
+    "description": "Subtitle showing singles tracks count",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySelectAlbums": "Select Albums...",
+  "@discographySelectAlbums": {
+    "description": "Option - manually select albums to download"
+  },
+  "discographySelectAlbumsSubtitle": "Choose specific albums or singles",
+  "@discographySelectAlbumsSubtitle": {
+    "description": "Subtitle for select albums option"
+  },
+  "discographyFetchingTracks": "Fetching tracks...",
+  "@discographyFetchingTracks": {
+    "description": "Progress - fetching album tracks"
+  },
+  "discographyFetchingAlbum": "Fetching {current} of {total}...",
+  "@discographyFetchingAlbum": {
+    "description": "Progress - fetching specific album",
+    "placeholders": {
+      "current": {
+        "type": "int"
+      },
+      "total": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySelectedCount": "{count} selected",
+  "@discographySelectedCount": {
+    "description": "Selection count badge",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyDownloadSelected": "Download Selected",
+  "@discographyDownloadSelected": {
+    "description": "Button - download selected albums"
+  },
+  "discographyAddedToQueue": "Added {count} tracks to queue",
+  "@discographyAddedToQueue": {
+    "description": "Snackbar - tracks added from discography",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySkippedDownloaded": "{added} added, {skipped} already downloaded",
+  "@discographySkippedDownloaded": {
+    "description": "Snackbar - with skipped tracks count",
+    "placeholders": {
+      "added": {
+        "type": "int"
+      },
+      "skipped": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyNoAlbums": "No albums available",
+  "@discographyNoAlbums": {
+    "description": "Error - no albums found for artist"
+  },
+  "discographyFailedToFetch": "Failed to fetch some albums",
+  "@discographyFailedToFetch": {
+    "description": "Error - some albums failed to load"
   }
 }

lib/l10n/arb/app_en.arb

@@ -9,8 +9,10 @@
 
   "navHome": "Home",
   "@navHome": {"description": "Bottom navigation - Home tab"},
+  "navLibrary": "Library",
+  "@navLibrary": {"description": "Bottom navigation - Library tab"},
   "navHistory": "History",
-  "@navHistory": {"description": "Bottom navigation - History tab"},
+  "@navHistory": {"description": "Bottom navigation - History tab (legacy)"},
   "navSettings": "Settings",
   "@navSettings": {"description": "Bottom navigation - Settings tab"},
   "navStore": "Store",
@@ -334,6 +336,8 @@
   "@aboutBinimumDesc": {"description": "Credit description for binimum"},
   "aboutSachinsenalDesc": "The original HiFi project creator. The foundation of Tidal integration!",
   "@aboutSachinsenalDesc": {"description": "Credit description for sachinsenal0x64"},
+  "aboutSjdonadoDesc": "Creator of I Don't Have Spotify (IDHS). The fallback link resolver that saves the day!",
+  "@aboutSjdonadoDesc": {"description": "Credit description for sjdonado"},
   "aboutDoubleDouble": "DoubleDouble",
   "@aboutDoubleDouble": {"description": "Name of Amazon API service - DO NOT TRANSLATE"},
   "aboutDoubleDoubleDesc": "Amazing API for Amazon Music downloads. Thank you for making it free!",
@@ -479,8 +483,10 @@
   "@setupChooseFromFiles": {"description": "iOS file picker option"},
   "setupChooseFromFilesSubtitle": "Select iCloud or other location",
   "@setupChooseFromFilesSubtitle": {"description": "Subtitle for file picker"},
-  "setupIosEmptyFolderWarning": "iOS limitation: Empty folders cannot be selected. Choose a folder with at least one file.",
+"setupIosEmptyFolderWarning": "iOS limitation: Empty folders cannot be selected. Choose a folder with at least one file.",
   "@setupIosEmptyFolderWarning": {"description": "iOS folder selection warning"},
+  "setupIcloudNotSupported": "iCloud Drive is not supported. Please use the app Documents folder.",
+  "@setupIcloudNotSupported": {"description": "Error when user selects iCloud Drive on iOS"},
   "setupDownloadInFlac": "Download Spotify tracks in FLAC",
   "@setupDownloadInFlac": {"description": "App tagline in setup"},
   "setupStepStorage": "Storage",
@@ -666,6 +672,13 @@
       "trackName": {"type": "String"}
     }
   },
+  "snackbarAlreadyInLibrary": "\"{trackName}\" already exists in your library",
+  "@snackbarAlreadyInLibrary": {
+    "description": "Snackbar - track already exists in local library",
+    "placeholders": {
+      "trackName": {"type": "String"}
+    }
+  },
   "snackbarHistoryCleared": "History cleared",
   "@snackbarHistoryCleared": {"description": "Snackbar - history deleted"},
   "snackbarCredentialsSaved": "Credentials saved",
@@ -1188,6 +1201,12 @@
   "@trackLyricsTimeout": {"description": "Message when lyrics request times out"},
   "trackLyricsLoadFailed": "Failed to load lyrics",
   "@trackLyricsLoadFailed": {"description": "Message when lyrics loading fails"},
+  "trackEmbedLyrics": "Embed Lyrics",
+  "@trackEmbedLyrics": {"description": "Action - embed lyrics into audio file"},
+  "trackLyricsEmbedded": "Lyrics embedded successfully",
+  "@trackLyricsEmbedded": {"description": "Snackbar - lyrics saved to file"},
+  "trackInstrumental": "Instrumental track",
+  "@trackInstrumental": {"description": "Message when track is instrumental (no lyrics)"},
   "trackCopiedToClipboard": "Copied to clipboard",
   "@trackCopiedToClipboard": {"description": "Snackbar - content copied"},
   "trackDeleteConfirmTitle": "Remove from device?",
@@ -1367,16 +1386,26 @@
   "@qualityHiResFlacMax": {"description": "Quality option - maximum resolution FLAC"},
   "qualityHiResFlacMaxSubtitle": "24-bit / up to 192kHz",
   "@qualityHiResFlacMaxSubtitle": {"description": "Technical spec for hi-res max"},
-  "qualityMp3": "MP3",
-  "@qualityMp3": {"description": "Quality option - MP3 lossy format"},
-  "qualityMp3Subtitle": "320kbps (converted from FLAC)",
-  "@qualityMp3Subtitle": {"description": "Technical spec for MP3"},
-  "enableMp3Option": "Enable MP3 Option",
-  "@enableMp3Option": {"description": "Setting - enable MP3 quality option"},
-  "enableMp3OptionSubtitleOn": "MP3 quality option is available",
-  "@enableMp3OptionSubtitleOn": {"description": "Subtitle when MP3 is enabled"},
-  "enableMp3OptionSubtitleOff": "Downloads FLAC then converts to 320kbps MP3",
-  "@enableMp3OptionSubtitleOff": {"description": "Subtitle when MP3 is disabled"},
+  "qualityLossy": "Lossy",
+  "@qualityLossy": {"description": "Quality option - lossy format (MP3/Opus)"},
+  "qualityLossyMp3Subtitle": "MP3 320kbps (converted from FLAC)",
+  "@qualityLossyMp3Subtitle": {"description": "Technical spec for lossy MP3"},
+  "qualityLossyOpusSubtitle": "Opus 128kbps (converted from FLAC)",
+  "@qualityLossyOpusSubtitle": {"description": "Technical spec for lossy Opus"},
+  "enableLossyOption": "Enable Lossy Option",
+  "@enableLossyOption": {"description": "Setting - enable lossy quality option"},
+  "enableLossyOptionSubtitleOn": "Lossy quality option is available",
+  "@enableLossyOptionSubtitleOn": {"description": "Subtitle when lossy is enabled"},
+  "enableLossyOptionSubtitleOff": "Downloads FLAC then converts to lossy format",
+  "@enableLossyOptionSubtitleOff": {"description": "Subtitle when lossy is disabled"},
+  "lossyFormat": "Lossy Format",
+  "@lossyFormat": {"description": "Setting - choose lossy format"},
+  "lossyFormatDescription": "Choose the lossy format for conversion",
+  "@lossyFormatDescription": {"description": "Description for lossy format picker"},
+  "lossyFormatMp3Subtitle": "320kbps, best compatibility",
+  "@lossyFormatMp3Subtitle": {"description": "MP3 format description"},
+  "lossyFormatOpusSubtitle": "128kbps, better quality at smaller size",
+  "@lossyFormatOpusSubtitle": {"description": "Opus format description"},
   "qualityNote": "Actual quality depends on track availability from the service",
   "@qualityNote": {"description": "Note about quality availability"},
 
@@ -1440,10 +1469,32 @@
 
   "queueTitle": "Download Queue",
   "@queueTitle": {"description": "Queue screen title"},
-  "queueClearAll": "Clear All",
+"queueClearAll": "Clear All",
   "@queueClearAll": {"description": "Button - clear all queue items"},
   "queueClearAllMessage": "Are you sure you want to clear all downloads?",
   "@queueClearAllMessage": {"description": "Clear queue confirmation"},
+  "queueExportFailed": "Export",
+  "@queueExportFailed": {"description": "Button - export failed downloads to TXT"},
+  "queueExportFailedSuccess": "Failed downloads exported to TXT file",
+  "@queueExportFailedSuccess": {"description": "Success message after exporting failed downloads"},
+  "queueExportFailedClear": "Clear Failed",
+  "@queueExportFailedClear": {"description": "Action to clear failed downloads after export"},
+  "queueExportFailedError": "Failed to export downloads",
+  "@queueExportFailedError": {"description": "Error message when export fails"},
+  "settingsAutoExportFailed": "Auto-export failed downloads",
+  "@settingsAutoExportFailed": {"description": "Setting toggle for auto-export"},
+  "settingsAutoExportFailedSubtitle": "Save failed downloads to TXT file automatically",
+  "@settingsAutoExportFailedSubtitle": {"description": "Subtitle for auto-export setting"},
+
+  "settingsDownloadNetwork": "Download Network",
+  "@settingsDownloadNetwork": {"description": "Setting for network type preference"},
+  "settingsDownloadNetworkAny": "WiFi + Mobile Data",
+  "@settingsDownloadNetworkAny": {"description": "Network option - use any connection"},
+  "settingsDownloadNetworkWifiOnly": "WiFi Only",
+  "@settingsDownloadNetworkWifiOnly": {"description": "Network option - only use WiFi"},
+  "settingsDownloadNetworkSubtitle": "Choose which network to use for downloads. When set to WiFi Only, downloads will pause on mobile data.",
+  "@settingsDownloadNetworkSubtitle": {"description": "Subtitle explaining network preference"},
+
   "queueEmpty": "No downloads in queue",
   "@queueEmpty": {"description": "Empty queue state title"},
   "queueEmptySubtitle": "Add tracks from the home screen",
@@ -1477,6 +1528,10 @@
   "@albumFolderYearAlbum": {"description": "Album folder option with year"},
   "albumFolderYearAlbumSubtitle": "Albums/[2005] Album Name/",
   "@albumFolderYearAlbumSubtitle": {"description": "Folder structure example"},
+  "albumFolderArtistAlbumSingles": "Artist / Album + Singles",
+  "@albumFolderArtistAlbumSingles": {"description": "Album folder option with singles inside artist"},
+  "albumFolderArtistAlbumSinglesSubtitle": "Artist/Album/ and Artist/Singles/",
+  "@albumFolderArtistAlbumSinglesSubtitle": {"description": "Folder structure example"},
 
   "downloadedAlbumDeleteSelected": "Delete Selected",
   "@downloadedAlbumDeleteSelected": {"description": "Button - delete selected tracks"},
@@ -1624,5 +1679,173 @@
   "discographyNoAlbums": "No albums available",
   "@discographyNoAlbums": {"description": "Error - no albums found for artist"},
   "discographyFailedToFetch": "Failed to fetch some albums",
-  "@discographyFailedToFetch": {"description": "Error - some albums failed to load"}
+  "@discographyFailedToFetch": {"description": "Error - some albums failed to load"},
+
+  "sectionStorageAccess": "Storage Access",
+  "@sectionStorageAccess": {"description": "Section header for storage access settings"},
+  "allFilesAccess": "All Files Access",
+  "@allFilesAccess": {"description": "Toggle for MANAGE_EXTERNAL_STORAGE permission"},
+  "allFilesAccessEnabledSubtitle": "Can write to any folder",
+  "@allFilesAccessEnabledSubtitle": {"description": "Subtitle when all files access is enabled"},
+  "allFilesAccessDisabledSubtitle": "Limited to media folders only",
+  "@allFilesAccessDisabledSubtitle": {"description": "Subtitle when all files access is disabled"},
+  "allFilesAccessDescription": "Enable this if you encounter write errors when saving to custom folders. Android 13+ restricts access to certain directories by default.",
+  "@allFilesAccessDescription": {"description": "Description explaining when to enable all files access"},
+  "allFilesAccessDeniedMessage": "Permission was denied. Please enable 'All files access' manually in system settings.",
+  "@allFilesAccessDeniedMessage": {"description": "Message when permission is permanently denied"},
+  "allFilesAccessDisabledMessage": "All Files Access disabled. The app will use limited storage access.",
+  "@allFilesAccessDisabledMessage": {"description": "Snackbar message when user disables all files access"},
+
+  "settingsLocalLibrary": "Local Library",
+  "@settingsLocalLibrary": {"description": "Settings menu item - local library"},
+  "settingsLocalLibrarySubtitle": "Scan music & detect duplicates",
+  "@settingsLocalLibrarySubtitle": {"description": "Subtitle for local library settings"},
+  "libraryTitle": "Local Library",
+  "@libraryTitle": {"description": "Library settings page title"},
+  "libraryStatus": "Library Status",
+  "@libraryStatus": {"description": "Section header for library status"},
+  "libraryScanSettings": "Scan Settings",
+  "@libraryScanSettings": {"description": "Section header for scan settings"},
+  "libraryEnableLocalLibrary": "Enable Local Library",
+  "@libraryEnableLocalLibrary": {"description": "Toggle to enable library scanning"},
+  "libraryEnableLocalLibrarySubtitle": "Scan and track your existing music",
+  "@libraryEnableLocalLibrarySubtitle": {"description": "Subtitle for enable toggle"},
+  "libraryFolder": "Library Folder",
+  "@libraryFolder": {"description": "Folder selection setting"},
+  "libraryFolderHint": "Tap to select folder",
+  "@libraryFolderHint": {"description": "Placeholder when no folder selected"},
+  "libraryShowDuplicateIndicator": "Show Duplicate Indicator",
+  "@libraryShowDuplicateIndicator": {"description": "Toggle for duplicate indicator in search"},
+  "libraryShowDuplicateIndicatorSubtitle": "Show when searching for existing tracks",
+  "@libraryShowDuplicateIndicatorSubtitle": {"description": "Subtitle for duplicate indicator toggle"},
+  "libraryActions": "Actions",
+  "@libraryActions": {"description": "Section header for library actions"},
+  "libraryScan": "Scan Library",
+  "@libraryScan": {"description": "Button to start library scan"},
+  "libraryScanSubtitle": "Scan for audio files",
+  "@libraryScanSubtitle": {"description": "Subtitle for scan button"},
+  "libraryScanSelectFolderFirst": "Select a folder first",
+  "@libraryScanSelectFolderFirst": {"description": "Message when trying to scan without folder"},
+  "libraryCleanupMissingFiles": "Cleanup Missing Files",
+  "@libraryCleanupMissingFiles": {"description": "Button to remove entries for missing files"},
+  "libraryCleanupMissingFilesSubtitle": "Remove entries for files that no longer exist",
+  "@libraryCleanupMissingFilesSubtitle": {"description": "Subtitle for cleanup button"},
+  "libraryClear": "Clear Library",
+  "@libraryClear": {"description": "Button to clear all library entries"},
+  "libraryClearSubtitle": "Remove all scanned tracks",
+  "@libraryClearSubtitle": {"description": "Subtitle for clear button"},
+  "libraryClearConfirmTitle": "Clear Library",
+  "@libraryClearConfirmTitle": {"description": "Dialog title for clear confirmation"},
+  "libraryClearConfirmMessage": "This will remove all scanned tracks from your library. Your actual music files will not be deleted.",
+  "@libraryClearConfirmMessage": {"description": "Dialog message for clear confirmation"},
+  "libraryAbout": "About Local Library",
+  "@libraryAbout": {"description": "Section header for about info"},
+  "libraryAboutDescription": "Scans your existing music collection to detect duplicates when downloading. Supports FLAC, M4A, MP3, Opus, and OGG formats. Metadata is read from file tags when available.",
+  "@libraryAboutDescription": {"description": "Description of local library feature"},
+  "libraryTracksCount": "{count} tracks",
+  "@libraryTracksCount": {
+    "description": "Track count in library",
+    "placeholders": {
+      "count": {"type": "int"}
+    }
+  },
+  "libraryLastScanned": "Last scanned: {time}",
+  "@libraryLastScanned": {
+    "description": "Last scan time display",
+    "placeholders": {
+      "time": {"type": "String"}
+    }
+  },
+  "libraryLastScannedNever": "Never",
+  "@libraryLastScannedNever": {"description": "Shown when library has never been scanned"},
+  "libraryScanning": "Scanning...",
+  "@libraryScanning": {"description": "Status during scan"},
+  "libraryScanProgress": "{progress}% of {total} files",
+  "@libraryScanProgress": {
+    "description": "Scan progress display",
+    "placeholders": {
+      "progress": {"type": "String"},
+      "total": {"type": "int"}
+    }
+  },
+  "libraryInLibrary": "In Library",
+  "@libraryInLibrary": {"description": "Badge shown on tracks that exist in local library"},
+  "libraryRemovedMissingFiles": "Removed {count} missing files from library",
+  "@libraryRemovedMissingFiles": {
+    "description": "Snackbar after cleanup",
+    "placeholders": {
+      "count": {"type": "int"}
+    }
+  },
+  "libraryCleared": "Library cleared",
+  "@libraryCleared": {"description": "Snackbar after clearing library"},
+  "libraryStorageAccessRequired": "Storage Access Required",
+  "@libraryStorageAccessRequired": {"description": "Dialog title for storage permission"},
+  "libraryStorageAccessMessage": "SpotiFLAC needs storage access to scan your music library. Please grant permission in settings.",
+  "@libraryStorageAccessMessage": {"description": "Dialog message for storage permission"},
+  "libraryFolderNotExist": "Selected folder does not exist",
+  "@libraryFolderNotExist": {"description": "Error when folder doesn't exist"},
+  "librarySourceDownloaded": "Downloaded",
+  "@librarySourceDownloaded": {"description": "Badge for tracks downloaded via SpotiFLAC"},
+  "librarySourceLocal": "Local",
+  "@librarySourceLocal": {"description": "Badge for tracks from local library scan"},
+  "libraryFilterAll": "All",
+  "@libraryFilterAll": {"description": "Filter chip - show all library items"},
+  "libraryFilterDownloaded": "Downloaded",
+  "@libraryFilterDownloaded": {"description": "Filter chip - show only downloaded items"},
+  "libraryFilterLocal": "Local",
+  "@libraryFilterLocal": {"description": "Filter chip - show only local library items"},
+
+  "libraryFilterTitle": "Filters",
+  "@libraryFilterTitle": {"description": "Filter bottom sheet title"},
+  "libraryFilterReset": "Reset",
+  "@libraryFilterReset": {"description": "Reset all filters button"},
+  "libraryFilterApply": "Apply",
+  "@libraryFilterApply": {"description": "Apply filters button"},
+  "libraryFilterSource": "Source",
+  "@libraryFilterSource": {"description": "Filter section - source type"},
+  "libraryFilterQuality": "Quality",
+  "@libraryFilterQuality": {"description": "Filter section - audio quality"},
+  "libraryFilterQualityHiRes": "Hi-Res (24bit)",
+  "@libraryFilterQualityHiRes": {"description": "Filter option - high resolution audio"},
+  "libraryFilterQualityCD": "CD (16bit)",
+  "@libraryFilterQualityCD": {"description": "Filter option - CD quality audio"},
+  "libraryFilterQualityLossy": "Lossy",
+  "@libraryFilterQualityLossy": {"description": "Filter option - lossy compressed audio"},
+  "libraryFilterFormat": "Format",
+  "@libraryFilterFormat": {"description": "Filter section - file format"},
+  "libraryFilterDate": "Date Added",
+  "@libraryFilterDate": {"description": "Filter section - date range"},
+  "libraryFilterDateToday": "Today",
+  "@libraryFilterDateToday": {"description": "Filter option - today only"},
+  "libraryFilterDateWeek": "This Week",
+  "@libraryFilterDateWeek": {"description": "Filter option - this week"},
+  "libraryFilterDateMonth": "This Month",
+  "@libraryFilterDateMonth": {"description": "Filter option - this month"},
+  "libraryFilterDateYear": "This Year",
+  "@libraryFilterDateYear": {"description": "Filter option - this year"},
+  "libraryFilterActive": "{count} filter(s) active",
+  "@libraryFilterActive": {
+    "description": "Badge showing number of active filters",
+    "placeholders": {
+      "count": {"type": "int"}
+    }
+  },
+
+  "timeJustNow": "Just now",
+  "@timeJustNow": {"description": "Relative time - less than a minute ago"},
+  "timeMinutesAgo": "{count, plural, =1{1 minute ago} other{{count} minutes ago}}",
+  "@timeMinutesAgo": {
+    "description": "Relative time - minutes ago",
+    "placeholders": {
+      "count": {"type": "int"}
+    }
+  },
+  "timeHoursAgo": "{count, plural, =1{1 hour ago} other{{count} hours ago}}",
+  "@timeHoursAgo": {
+    "description": "Relative time - hours ago",
+    "placeholders": {
+      "count": {"type": "int"}
+    }
+  }
 }

lib/l10n/arb/app_fr.arb

@@ -127,6 +127,10 @@
   "@historyNoSinglesSubtitle": {
     "description": "Empty state subtitle for singles filter"
   },
+  "historySearchHint": "Search history...",
+  "@historySearchHint": {
+    "description": "Search bar placeholder in history"
+  },
   "settingsTitle": "Settings",
   "@settingsTitle": {
     "description": "Settings screen title"
@@ -512,6 +516,10 @@
   "@aboutLogoArtist": {
     "description": "Role description for logo artist"
   },
+  "aboutTranslators": "Translators",
+  "@aboutTranslators": {
+    "description": "Section for translators"
+  },
   "aboutSpecialThanks": "Special Thanks",
   "@aboutSpecialThanks": {
     "description": "Section for special thanks"
@@ -544,6 +552,26 @@
   "@aboutFeatureRequestSubtitle": {
     "description": "Subtitle for feature request"
   },
+  "aboutTelegramChannel": "Telegram Channel",
+  "@aboutTelegramChannel": {
+    "description": "Link to Telegram channel"
+  },
+  "aboutTelegramChannelSubtitle": "Announcements and updates",
+  "@aboutTelegramChannelSubtitle": {
+    "description": "Subtitle for Telegram channel"
+  },
+  "aboutTelegramChat": "Telegram Community",
+  "@aboutTelegramChat": {
+    "description": "Link to Telegram chat group"
+  },
+  "aboutTelegramChatSubtitle": "Chat with other users",
+  "@aboutTelegramChatSubtitle": {
+    "description": "Subtitle for Telegram chat"
+  },
+  "aboutSocial": "Social",
+  "@aboutSocial": {
+    "description": "Section for social links"
+  },
   "aboutSupport": "Support",
   "@aboutSupport": {
     "description": "Section for support/donation links"
@@ -1122,6 +1150,15 @@
     "description": "Dialog title - import CSV playlist"
   },
   "dialogImportPlaylistMessage": "Found {count} tracks in CSV. Add them to download queue?",
+  "csvImportTracks": "{count} tracks from CSV",
+  "@csvImportTracks": {
+    "description": "Label shown in quality picker for CSV import",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
   "@dialogImportPlaylistMessage": {
     "description": "Dialog message - import playlist confirmation",
     "placeholders": {
@@ -1851,6 +1888,42 @@
   "@sectionFileSettings": {
     "description": "Settings section header"
   },
+  "sectionLyrics": "Lyrics",
+  "@sectionLyrics": {
+    "description": "Settings section header"
+  },
+  "lyricsMode": "Lyrics Mode",
+  "@lyricsMode": {
+    "description": "Setting - how to save lyrics"
+  },
+  "lyricsModeDescription": "Choose how lyrics are saved with your downloads",
+  "@lyricsModeDescription": {
+    "description": "Lyrics mode picker description"
+  },
+  "lyricsModeEmbed": "Embed in file",
+  "@lyricsModeEmbed": {
+    "description": "Lyrics mode option - embed in audio file"
+  },
+  "lyricsModeEmbedSubtitle": "Lyrics stored inside FLAC metadata",
+  "@lyricsModeEmbedSubtitle": {
+    "description": "Subtitle for embed option"
+  },
+  "lyricsModeExternal": "External .lrc file",
+  "@lyricsModeExternal": {
+    "description": "Lyrics mode option - separate LRC file"
+  },
+  "lyricsModeExternalSubtitle": "Separate .lrc file for players like Samsung Music",
+  "@lyricsModeExternalSubtitle": {
+    "description": "Subtitle for external option"
+  },
+  "lyricsModeBoth": "Both",
+  "@lyricsModeBoth": {
+    "description": "Lyrics mode option - embed and external"
+  },
+  "lyricsModeBothSubtitle": "Embed and save .lrc file",
+  "@lyricsModeBothSubtitle": {
+    "description": "Subtitle for both option"
+  },
   "sectionColor": "Color",
   "@sectionColor": {
     "description": "Settings section header"
@@ -1997,6 +2070,18 @@
   "@trackReleaseDate": {
     "description": "Metadata label - release date"
   },
+  "trackGenre": "Genre",
+  "@trackGenre": {
+    "description": "Metadata label - music genre"
+  },
+  "trackLabel": "Label",
+  "@trackLabel": {
+    "description": "Metadata label - record label"
+  },
+  "trackCopyright": "Copyright",
+  "@trackCopyright": {
+    "description": "Metadata label - copyright information"
+  },
   "trackDownloaded": "Downloaded",
   "@trackDownloaded": {
     "description": "Metadata label - download date"
@@ -2017,6 +2102,18 @@
   "@trackLyricsLoadFailed": {
     "description": "Message when lyrics loading fails"
   },
+  "trackEmbedLyrics": "Embed Lyrics",
+  "@trackEmbedLyrics": {
+    "description": "Action - embed lyrics into audio file"
+  },
+  "trackLyricsEmbedded": "Lyrics embedded successfully",
+  "@trackLyricsEmbedded": {
+    "description": "Snackbar - lyrics saved to file"
+  },
+  "trackInstrumental": "Instrumental track",
+  "@trackInstrumental": {
+    "description": "Message when track is instrumental (no lyrics)"
+  },
   "trackCopiedToClipboard": "Copied to clipboard",
   "@trackCopiedToClipboard": {
     "description": "Snackbar - content copied"
@@ -2328,6 +2425,26 @@
   "@qualityHiResFlacMaxSubtitle": {
     "description": "Technical spec for hi-res max"
   },
+  "qualityMp3": "MP3",
+  "@qualityMp3": {
+    "description": "Quality option - MP3 lossy format"
+  },
+  "qualityMp3Subtitle": "320kbps (converted from FLAC)",
+  "@qualityMp3Subtitle": {
+    "description": "Technical spec for MP3"
+  },
+  "enableMp3Option": "Enable MP3 Option",
+  "@enableMp3Option": {
+    "description": "Setting - enable MP3 quality option"
+  },
+  "enableMp3OptionSubtitleOn": "MP3 quality option is available",
+  "@enableMp3OptionSubtitleOn": {
+    "description": "Subtitle when MP3 is enabled"
+  },
+  "enableMp3OptionSubtitleOff": "Downloads FLAC then converts to 320kbps MP3",
+  "@enableMp3OptionSubtitleOff": {
+    "description": "Subtitle when MP3 is disabled"
+  },
   "qualityNote": "Actual quality depends on track availability from the service",
   "@qualityNote": {
     "description": "Note about quality availability"
@@ -2516,6 +2633,14 @@
   "@albumFolderYearAlbumSubtitle": {
     "description": "Folder structure example"
   },
+  "albumFolderArtistAlbumSingles": "Artist / Album + Singles",
+  "@albumFolderArtistAlbumSingles": {
+    "description": "Album folder option with singles inside artist"
+  },
+  "albumFolderArtistAlbumSinglesSubtitle": "Artist/Album/ and Artist/Singles/",
+  "@albumFolderArtistAlbumSinglesSubtitle": {
+    "description": "Folder structure example"
+  },
   "downloadedAlbumDeleteSelected": "Delete Selected",
   "@downloadedAlbumDeleteSelected": {
     "description": "Button - delete selected tracks"
@@ -2572,6 +2697,16 @@
   "@downloadedAlbumSelectToDelete": {
     "description": "Placeholder when nothing selected"
   },
+  "downloadedAlbumDiscHeader": "Disc {discNumber}",
+  "@downloadedAlbumDiscHeader": {
+    "description": "Header for disc separator in multi-disc albums",
+    "placeholders": {
+      "discNumber": {
+        "type": "int",
+        "example": "1"
+      }
+    }
+  },
   "utilityFunctions": "Utility Functions",
   "@utilityFunctions": {
     "description": "Extension capability - utility functions"
@@ -2611,5 +2746,123 @@
         "description": "Error message"
       }
     }
+  },
+  "discographyDownload": "Download Discography",
+  "@discographyDownload": {
+    "description": "Button - download artist discography"
+  },
+  "discographyDownloadAll": "Download All",
+  "@discographyDownloadAll": {
+    "description": "Option - download entire discography"
+  },
+  "discographyDownloadAllSubtitle": "{count} tracks from {albumCount} releases",
+  "@discographyDownloadAllSubtitle": {
+    "description": "Subtitle showing total tracks and albums",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyAlbumsOnly": "Albums Only",
+  "@discographyAlbumsOnly": {
+    "description": "Option - download only albums"
+  },
+  "discographyAlbumsOnlySubtitle": "{count} tracks from {albumCount} albums",
+  "@discographyAlbumsOnlySubtitle": {
+    "description": "Subtitle showing album tracks count",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySinglesOnly": "Singles & EPs Only",
+  "@discographySinglesOnly": {
+    "description": "Option - download only singles"
+  },
+  "discographySinglesOnlySubtitle": "{count} tracks from {albumCount} singles",
+  "@discographySinglesOnlySubtitle": {
+    "description": "Subtitle showing singles tracks count",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySelectAlbums": "Select Albums...",
+  "@discographySelectAlbums": {
+    "description": "Option - manually select albums to download"
+  },
+  "discographySelectAlbumsSubtitle": "Choose specific albums or singles",
+  "@discographySelectAlbumsSubtitle": {
+    "description": "Subtitle for select albums option"
+  },
+  "discographyFetchingTracks": "Fetching tracks...",
+  "@discographyFetchingTracks": {
+    "description": "Progress - fetching album tracks"
+  },
+  "discographyFetchingAlbum": "Fetching {current} of {total}...",
+  "@discographyFetchingAlbum": {
+    "description": "Progress - fetching specific album",
+    "placeholders": {
+      "current": {
+        "type": "int"
+      },
+      "total": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySelectedCount": "{count} selected",
+  "@discographySelectedCount": {
+    "description": "Selection count badge",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyDownloadSelected": "Download Selected",
+  "@discographyDownloadSelected": {
+    "description": "Button - download selected albums"
+  },
+  "discographyAddedToQueue": "Added {count} tracks to queue",
+  "@discographyAddedToQueue": {
+    "description": "Snackbar - tracks added from discography",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySkippedDownloaded": "{added} added, {skipped} already downloaded",
+  "@discographySkippedDownloaded": {
+    "description": "Snackbar - with skipped tracks count",
+    "placeholders": {
+      "added": {
+        "type": "int"
+      },
+      "skipped": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyNoAlbums": "No albums available",
+  "@discographyNoAlbums": {
+    "description": "Error - no albums found for artist"
+  },
+  "discographyFailedToFetch": "Failed to fetch some albums",
+  "@discographyFailedToFetch": {
+    "description": "Error - some albums failed to load"
   }
 }

lib/l10n/arb/app_hi.arb

@@ -1,23 +1,23 @@
 {
   "@@locale": "hi",
   "@@last_modified": "2026-01-16",
-  "appName": "SpotiFLAC",
+  "appName": "SpotiFlac",
   "@appName": {
     "description": "App name - DO NOT TRANSLATE"
   },
-  "appDescription": "Download Spotify tracks in lossless quality from Tidal, Qobuz, and Amazon Music.",
+  "appDescription": "स्पॉटीफाई ट्रैक डाउनलोड करें टाइडल, क्वाबज एवं एवं अमेजन म्यूजिक से उच्चतम क्वालिटी में।",
   "@appDescription": {
     "description": "App description shown in about page"
   },
-  "navHome": "Home",
+  "navHome": "होम",
   "@navHome": {
     "description": "Bottom navigation - Home tab"
   },
-  "navHistory": "History",
+  "navHistory": "इतिहास",
   "@navHistory": {
     "description": "Bottom navigation - History tab"
   },
-  "navSettings": "Settings",
+  "navSettings": "विकल्प",
   "@navSettings": {
     "description": "Bottom navigation - Settings tab"
   },
@@ -127,6 +127,10 @@
   "@historyNoSinglesSubtitle": {
     "description": "Empty state subtitle for singles filter"
   },
+  "historySearchHint": "Search history...",
+  "@historySearchHint": {
+    "description": "Search bar placeholder in history"
+  },
   "settingsTitle": "Settings",
   "@settingsTitle": {
     "description": "Settings screen title"
@@ -219,7 +223,7 @@
   "@quality128": {
     "description": "Audio quality option - 128kbps MP3"
   },
-  "appearanceTitle": "Appearance",
+  "appearanceTitle": "दिखावट",
   "@appearanceTitle": {
     "description": "Appearance settings page title"
   },
@@ -239,11 +243,11 @@
   "@appearanceThemeDark": {
     "description": "Dark theme"
   },
-  "appearanceDynamicColor": "Dynamic Color",
+  "appearanceDynamicColor": "डायनेमिक रंग",
   "@appearanceDynamicColor": {
     "description": "Material You dynamic colors"
   },
-  "appearanceDynamicColorSubtitle": "Use colors from your wallpaper",
+  "appearanceDynamicColorSubtitle": "वॉलपेपर से रंग इस्तेमाल करें",
   "@appearanceDynamicColorSubtitle": {
     "description": "Subtitle for dynamic color"
   },
@@ -512,6 +516,10 @@
   "@aboutLogoArtist": {
     "description": "Role description for logo artist"
   },
+  "aboutTranslators": "Translators",
+  "@aboutTranslators": {
+    "description": "Section for translators"
+  },
   "aboutSpecialThanks": "Special Thanks",
   "@aboutSpecialThanks": {
     "description": "Section for special thanks"
@@ -544,6 +552,26 @@
   "@aboutFeatureRequestSubtitle": {
     "description": "Subtitle for feature request"
   },
+  "aboutTelegramChannel": "Telegram Channel",
+  "@aboutTelegramChannel": {
+    "description": "Link to Telegram channel"
+  },
+  "aboutTelegramChannelSubtitle": "Announcements and updates",
+  "@aboutTelegramChannelSubtitle": {
+    "description": "Subtitle for Telegram channel"
+  },
+  "aboutTelegramChat": "Telegram Community",
+  "@aboutTelegramChat": {
+    "description": "Link to Telegram chat group"
+  },
+  "aboutTelegramChatSubtitle": "Chat with other users",
+  "@aboutTelegramChatSubtitle": {
+    "description": "Subtitle for Telegram chat"
+  },
+  "aboutSocial": "Social",
+  "@aboutSocial": {
+    "description": "Section for social links"
+  },
   "aboutSupport": "Support",
   "@aboutSupport": {
     "description": "Section for support/donation links"
@@ -1122,6 +1150,15 @@
     "description": "Dialog title - import CSV playlist"
   },
   "dialogImportPlaylistMessage": "Found {count} tracks in CSV. Add them to download queue?",
+  "csvImportTracks": "{count} tracks from CSV",
+  "@csvImportTracks": {
+    "description": "Label shown in quality picker for CSV import",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
   "@dialogImportPlaylistMessage": {
     "description": "Dialog message - import playlist confirmation",
     "placeholders": {
@@ -1851,6 +1888,42 @@
   "@sectionFileSettings": {
     "description": "Settings section header"
   },
+  "sectionLyrics": "Lyrics",
+  "@sectionLyrics": {
+    "description": "Settings section header"
+  },
+  "lyricsMode": "Lyrics Mode",
+  "@lyricsMode": {
+    "description": "Setting - how to save lyrics"
+  },
+  "lyricsModeDescription": "Choose how lyrics are saved with your downloads",
+  "@lyricsModeDescription": {
+    "description": "Lyrics mode picker description"
+  },
+  "lyricsModeEmbed": "Embed in file",
+  "@lyricsModeEmbed": {
+    "description": "Lyrics mode option - embed in audio file"
+  },
+  "lyricsModeEmbedSubtitle": "Lyrics stored inside FLAC metadata",
+  "@lyricsModeEmbedSubtitle": {
+    "description": "Subtitle for embed option"
+  },
+  "lyricsModeExternal": "External .lrc file",
+  "@lyricsModeExternal": {
+    "description": "Lyrics mode option - separate LRC file"
+  },
+  "lyricsModeExternalSubtitle": "Separate .lrc file for players like Samsung Music",
+  "@lyricsModeExternalSubtitle": {
+    "description": "Subtitle for external option"
+  },
+  "lyricsModeBoth": "Both",
+  "@lyricsModeBoth": {
+    "description": "Lyrics mode option - embed and external"
+  },
+  "lyricsModeBothSubtitle": "Embed and save .lrc file",
+  "@lyricsModeBothSubtitle": {
+    "description": "Subtitle for both option"
+  },
   "sectionColor": "Color",
   "@sectionColor": {
     "description": "Settings section header"
@@ -1997,6 +2070,18 @@
   "@trackReleaseDate": {
     "description": "Metadata label - release date"
   },
+  "trackGenre": "Genre",
+  "@trackGenre": {
+    "description": "Metadata label - music genre"
+  },
+  "trackLabel": "Label",
+  "@trackLabel": {
+    "description": "Metadata label - record label"
+  },
+  "trackCopyright": "Copyright",
+  "@trackCopyright": {
+    "description": "Metadata label - copyright information"
+  },
   "trackDownloaded": "Downloaded",
   "@trackDownloaded": {
     "description": "Metadata label - download date"
@@ -2017,6 +2102,18 @@
   "@trackLyricsLoadFailed": {
     "description": "Message when lyrics loading fails"
   },
+  "trackEmbedLyrics": "Embed Lyrics",
+  "@trackEmbedLyrics": {
+    "description": "Action - embed lyrics into audio file"
+  },
+  "trackLyricsEmbedded": "Lyrics embedded successfully",
+  "@trackLyricsEmbedded": {
+    "description": "Snackbar - lyrics saved to file"
+  },
+  "trackInstrumental": "Instrumental track",
+  "@trackInstrumental": {
+    "description": "Message when track is instrumental (no lyrics)"
+  },
   "trackCopiedToClipboard": "Copied to clipboard",
   "@trackCopiedToClipboard": {
     "description": "Snackbar - content copied"
@@ -2328,6 +2425,26 @@
   "@qualityHiResFlacMaxSubtitle": {
     "description": "Technical spec for hi-res max"
   },
+  "qualityMp3": "MP3",
+  "@qualityMp3": {
+    "description": "Quality option - MP3 lossy format"
+  },
+  "qualityMp3Subtitle": "320kbps (converted from FLAC)",
+  "@qualityMp3Subtitle": {
+    "description": "Technical spec for MP3"
+  },
+  "enableMp3Option": "Enable MP3 Option",
+  "@enableMp3Option": {
+    "description": "Setting - enable MP3 quality option"
+  },
+  "enableMp3OptionSubtitleOn": "MP3 quality option is available",
+  "@enableMp3OptionSubtitleOn": {
+    "description": "Subtitle when MP3 is enabled"
+  },
+  "enableMp3OptionSubtitleOff": "Downloads FLAC then converts to 320kbps MP3",
+  "@enableMp3OptionSubtitleOff": {
+    "description": "Subtitle when MP3 is disabled"
+  },
   "qualityNote": "Actual quality depends on track availability from the service",
   "@qualityNote": {
     "description": "Note about quality availability"
@@ -2516,6 +2633,14 @@
   "@albumFolderYearAlbumSubtitle": {
     "description": "Folder structure example"
   },
+  "albumFolderArtistAlbumSingles": "Artist / Album + Singles",
+  "@albumFolderArtistAlbumSingles": {
+    "description": "Album folder option with singles inside artist"
+  },
+  "albumFolderArtistAlbumSinglesSubtitle": "Artist/Album/ and Artist/Singles/",
+  "@albumFolderArtistAlbumSinglesSubtitle": {
+    "description": "Folder structure example"
+  },
   "downloadedAlbumDeleteSelected": "Delete Selected",
   "@downloadedAlbumDeleteSelected": {
     "description": "Button - delete selected tracks"
@@ -2572,6 +2697,16 @@
   "@downloadedAlbumSelectToDelete": {
     "description": "Placeholder when nothing selected"
   },
+  "downloadedAlbumDiscHeader": "Disc {discNumber}",
+  "@downloadedAlbumDiscHeader": {
+    "description": "Header for disc separator in multi-disc albums",
+    "placeholders": {
+      "discNumber": {
+        "type": "int",
+        "example": "1"
+      }
+    }
+  },
   "utilityFunctions": "Utility Functions",
   "@utilityFunctions": {
     "description": "Extension capability - utility functions"
@@ -2611,5 +2746,123 @@
         "description": "Error message"
       }
     }
+  },
+  "discographyDownload": "Download Discography",
+  "@discographyDownload": {
+    "description": "Button - download artist discography"
+  },
+  "discographyDownloadAll": "Download All",
+  "@discographyDownloadAll": {
+    "description": "Option - download entire discography"
+  },
+  "discographyDownloadAllSubtitle": "{count} tracks from {albumCount} releases",
+  "@discographyDownloadAllSubtitle": {
+    "description": "Subtitle showing total tracks and albums",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyAlbumsOnly": "Albums Only",
+  "@discographyAlbumsOnly": {
+    "description": "Option - download only albums"
+  },
+  "discographyAlbumsOnlySubtitle": "{count} tracks from {albumCount} albums",
+  "@discographyAlbumsOnlySubtitle": {
+    "description": "Subtitle showing album tracks count",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySinglesOnly": "Singles & EPs Only",
+  "@discographySinglesOnly": {
+    "description": "Option - download only singles"
+  },
+  "discographySinglesOnlySubtitle": "{count} tracks from {albumCount} singles",
+  "@discographySinglesOnlySubtitle": {
+    "description": "Subtitle showing singles tracks count",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySelectAlbums": "Select Albums...",
+  "@discographySelectAlbums": {
+    "description": "Option - manually select albums to download"
+  },
+  "discographySelectAlbumsSubtitle": "Choose specific albums or singles",
+  "@discographySelectAlbumsSubtitle": {
+    "description": "Subtitle for select albums option"
+  },
+  "discographyFetchingTracks": "Fetching tracks...",
+  "@discographyFetchingTracks": {
+    "description": "Progress - fetching album tracks"
+  },
+  "discographyFetchingAlbum": "Fetching {current} of {total}...",
+  "@discographyFetchingAlbum": {
+    "description": "Progress - fetching specific album",
+    "placeholders": {
+      "current": {
+        "type": "int"
+      },
+      "total": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySelectedCount": "{count} selected",
+  "@discographySelectedCount": {
+    "description": "Selection count badge",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyDownloadSelected": "Download Selected",
+  "@discographyDownloadSelected": {
+    "description": "Button - download selected albums"
+  },
+  "discographyAddedToQueue": "Added {count} tracks to queue",
+  "@discographyAddedToQueue": {
+    "description": "Snackbar - tracks added from discography",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySkippedDownloaded": "{added} added, {skipped} already downloaded",
+  "@discographySkippedDownloaded": {
+    "description": "Snackbar - with skipped tracks count",
+    "placeholders": {
+      "added": {
+        "type": "int"
+      },
+      "skipped": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyNoAlbums": "No albums available",
+  "@discographyNoAlbums": {
+    "description": "Error - no albums found for artist"
+  },
+  "discographyFailedToFetch": "Failed to fetch some albums",
+  "@discographyFailedToFetch": {
+    "description": "Error - some albums failed to load"
   }
 }

lib/l10n/arb/app_ko.arb

@@ -127,6 +127,10 @@
   "@historyNoSinglesSubtitle": {
     "description": "Empty state subtitle for singles filter"
   },
+  "historySearchHint": "Search history...",
+  "@historySearchHint": {
+    "description": "Search bar placeholder in history"
+  },
   "settingsTitle": "Settings",
   "@settingsTitle": {
     "description": "Settings screen title"
@@ -512,6 +516,10 @@
   "@aboutLogoArtist": {
     "description": "Role description for logo artist"
   },
+  "aboutTranslators": "Translators",
+  "@aboutTranslators": {
+    "description": "Section for translators"
+  },
   "aboutSpecialThanks": "Special Thanks",
   "@aboutSpecialThanks": {
     "description": "Section for special thanks"
@@ -544,6 +552,26 @@
   "@aboutFeatureRequestSubtitle": {
     "description": "Subtitle for feature request"
   },
+  "aboutTelegramChannel": "Telegram Channel",
+  "@aboutTelegramChannel": {
+    "description": "Link to Telegram channel"
+  },
+  "aboutTelegramChannelSubtitle": "Announcements and updates",
+  "@aboutTelegramChannelSubtitle": {
+    "description": "Subtitle for Telegram channel"
+  },
+  "aboutTelegramChat": "Telegram Community",
+  "@aboutTelegramChat": {
+    "description": "Link to Telegram chat group"
+  },
+  "aboutTelegramChatSubtitle": "Chat with other users",
+  "@aboutTelegramChatSubtitle": {
+    "description": "Subtitle for Telegram chat"
+  },
+  "aboutSocial": "Social",
+  "@aboutSocial": {
+    "description": "Section for social links"
+  },
   "aboutSupport": "Support",
   "@aboutSupport": {
     "description": "Section for support/donation links"
@@ -1122,6 +1150,15 @@
     "description": "Dialog title - import CSV playlist"
   },
   "dialogImportPlaylistMessage": "Found {count} tracks in CSV. Add them to download queue?",
+  "csvImportTracks": "{count} tracks from CSV",
+  "@csvImportTracks": {
+    "description": "Label shown in quality picker for CSV import",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
   "@dialogImportPlaylistMessage": {
     "description": "Dialog message - import playlist confirmation",
     "placeholders": {
@@ -1851,6 +1888,42 @@
   "@sectionFileSettings": {
     "description": "Settings section header"
   },
+  "sectionLyrics": "Lyrics",
+  "@sectionLyrics": {
+    "description": "Settings section header"
+  },
+  "lyricsMode": "Lyrics Mode",
+  "@lyricsMode": {
+    "description": "Setting - how to save lyrics"
+  },
+  "lyricsModeDescription": "Choose how lyrics are saved with your downloads",
+  "@lyricsModeDescription": {
+    "description": "Lyrics mode picker description"
+  },
+  "lyricsModeEmbed": "Embed in file",
+  "@lyricsModeEmbed": {
+    "description": "Lyrics mode option - embed in audio file"
+  },
+  "lyricsModeEmbedSubtitle": "Lyrics stored inside FLAC metadata",
+  "@lyricsModeEmbedSubtitle": {
+    "description": "Subtitle for embed option"
+  },
+  "lyricsModeExternal": "External .lrc file",
+  "@lyricsModeExternal": {
+    "description": "Lyrics mode option - separate LRC file"
+  },
+  "lyricsModeExternalSubtitle": "Separate .lrc file for players like Samsung Music",
+  "@lyricsModeExternalSubtitle": {
+    "description": "Subtitle for external option"
+  },
+  "lyricsModeBoth": "Both",
+  "@lyricsModeBoth": {
+    "description": "Lyrics mode option - embed and external"
+  },
+  "lyricsModeBothSubtitle": "Embed and save .lrc file",
+  "@lyricsModeBothSubtitle": {
+    "description": "Subtitle for both option"
+  },
   "sectionColor": "Color",
   "@sectionColor": {
     "description": "Settings section header"
@@ -1997,6 +2070,18 @@
   "@trackReleaseDate": {
     "description": "Metadata label - release date"
   },
+  "trackGenre": "Genre",
+  "@trackGenre": {
+    "description": "Metadata label - music genre"
+  },
+  "trackLabel": "Label",
+  "@trackLabel": {
+    "description": "Metadata label - record label"
+  },
+  "trackCopyright": "Copyright",
+  "@trackCopyright": {
+    "description": "Metadata label - copyright information"
+  },
   "trackDownloaded": "Downloaded",
   "@trackDownloaded": {
     "description": "Metadata label - download date"
@@ -2017,6 +2102,18 @@
   "@trackLyricsLoadFailed": {
     "description": "Message when lyrics loading fails"
   },
+  "trackEmbedLyrics": "Embed Lyrics",
+  "@trackEmbedLyrics": {
+    "description": "Action - embed lyrics into audio file"
+  },
+  "trackLyricsEmbedded": "Lyrics embedded successfully",
+  "@trackLyricsEmbedded": {
+    "description": "Snackbar - lyrics saved to file"
+  },
+  "trackInstrumental": "Instrumental track",
+  "@trackInstrumental": {
+    "description": "Message when track is instrumental (no lyrics)"
+  },
   "trackCopiedToClipboard": "Copied to clipboard",
   "@trackCopiedToClipboard": {
     "description": "Snackbar - content copied"
@@ -2328,6 +2425,26 @@
   "@qualityHiResFlacMaxSubtitle": {
     "description": "Technical spec for hi-res max"
   },
+  "qualityMp3": "MP3",
+  "@qualityMp3": {
+    "description": "Quality option - MP3 lossy format"
+  },
+  "qualityMp3Subtitle": "320kbps (converted from FLAC)",
+  "@qualityMp3Subtitle": {
+    "description": "Technical spec for MP3"
+  },
+  "enableMp3Option": "Enable MP3 Option",
+  "@enableMp3Option": {
+    "description": "Setting - enable MP3 quality option"
+  },
+  "enableMp3OptionSubtitleOn": "MP3 quality option is available",
+  "@enableMp3OptionSubtitleOn": {
+    "description": "Subtitle when MP3 is enabled"
+  },
+  "enableMp3OptionSubtitleOff": "Downloads FLAC then converts to 320kbps MP3",
+  "@enableMp3OptionSubtitleOff": {
+    "description": "Subtitle when MP3 is disabled"
+  },
   "qualityNote": "Actual quality depends on track availability from the service",
   "@qualityNote": {
     "description": "Note about quality availability"
@@ -2516,6 +2633,14 @@
   "@albumFolderYearAlbumSubtitle": {
     "description": "Folder structure example"
   },
+  "albumFolderArtistAlbumSingles": "Artist / Album + Singles",
+  "@albumFolderArtistAlbumSingles": {
+    "description": "Album folder option with singles inside artist"
+  },
+  "albumFolderArtistAlbumSinglesSubtitle": "Artist/Album/ and Artist/Singles/",
+  "@albumFolderArtistAlbumSinglesSubtitle": {
+    "description": "Folder structure example"
+  },
   "downloadedAlbumDeleteSelected": "Delete Selected",
   "@downloadedAlbumDeleteSelected": {
     "description": "Button - delete selected tracks"
@@ -2572,6 +2697,16 @@
   "@downloadedAlbumSelectToDelete": {
     "description": "Placeholder when nothing selected"
   },
+  "downloadedAlbumDiscHeader": "Disc {discNumber}",
+  "@downloadedAlbumDiscHeader": {
+    "description": "Header for disc separator in multi-disc albums",
+    "placeholders": {
+      "discNumber": {
+        "type": "int",
+        "example": "1"
+      }
+    }
+  },
   "utilityFunctions": "Utility Functions",
   "@utilityFunctions": {
     "description": "Extension capability - utility functions"
@@ -2611,5 +2746,123 @@
         "description": "Error message"
       }
     }
+  },
+  "discographyDownload": "Download Discography",
+  "@discographyDownload": {
+    "description": "Button - download artist discography"
+  },
+  "discographyDownloadAll": "Download All",
+  "@discographyDownloadAll": {
+    "description": "Option - download entire discography"
+  },
+  "discographyDownloadAllSubtitle": "{count} tracks from {albumCount} releases",
+  "@discographyDownloadAllSubtitle": {
+    "description": "Subtitle showing total tracks and albums",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyAlbumsOnly": "Albums Only",
+  "@discographyAlbumsOnly": {
+    "description": "Option - download only albums"
+  },
+  "discographyAlbumsOnlySubtitle": "{count} tracks from {albumCount} albums",
+  "@discographyAlbumsOnlySubtitle": {
+    "description": "Subtitle showing album tracks count",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySinglesOnly": "Singles & EPs Only",
+  "@discographySinglesOnly": {
+    "description": "Option - download only singles"
+  },
+  "discographySinglesOnlySubtitle": "{count} tracks from {albumCount} singles",
+  "@discographySinglesOnlySubtitle": {
+    "description": "Subtitle showing singles tracks count",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySelectAlbums": "Select Albums...",
+  "@discographySelectAlbums": {
+    "description": "Option - manually select albums to download"
+  },
+  "discographySelectAlbumsSubtitle": "Choose specific albums or singles",
+  "@discographySelectAlbumsSubtitle": {
+    "description": "Subtitle for select albums option"
+  },
+  "discographyFetchingTracks": "Fetching tracks...",
+  "@discographyFetchingTracks": {
+    "description": "Progress - fetching album tracks"
+  },
+  "discographyFetchingAlbum": "Fetching {current} of {total}...",
+  "@discographyFetchingAlbum": {
+    "description": "Progress - fetching specific album",
+    "placeholders": {
+      "current": {
+        "type": "int"
+      },
+      "total": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySelectedCount": "{count} selected",
+  "@discographySelectedCount": {
+    "description": "Selection count badge",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyDownloadSelected": "Download Selected",
+  "@discographyDownloadSelected": {
+    "description": "Button - download selected albums"
+  },
+  "discographyAddedToQueue": "Added {count} tracks to queue",
+  "@discographyAddedToQueue": {
+    "description": "Snackbar - tracks added from discography",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySkippedDownloaded": "{added} added, {skipped} already downloaded",
+  "@discographySkippedDownloaded": {
+    "description": "Snackbar - with skipped tracks count",
+    "placeholders": {
+      "added": {
+        "type": "int"
+      },
+      "skipped": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyNoAlbums": "No albums available",
+  "@discographyNoAlbums": {
+    "description": "Error - no albums found for artist"
+  },
+  "discographyFailedToFetch": "Failed to fetch some albums",
+  "@discographyFailedToFetch": {
+    "description": "Error - some albums failed to load"
   }
 }

lib/l10n/arb/app_nl.arb

@@ -127,6 +127,10 @@
   "@historyNoSinglesSubtitle": {
     "description": "Empty state subtitle for singles filter"
   },
+  "historySearchHint": "Search history...",
+  "@historySearchHint": {
+    "description": "Search bar placeholder in history"
+  },
   "settingsTitle": "Settings",
   "@settingsTitle": {
     "description": "Settings screen title"
@@ -512,6 +516,10 @@
   "@aboutLogoArtist": {
     "description": "Role description for logo artist"
   },
+  "aboutTranslators": "Translators",
+  "@aboutTranslators": {
+    "description": "Section for translators"
+  },
   "aboutSpecialThanks": "Special Thanks",
   "@aboutSpecialThanks": {
     "description": "Section for special thanks"
@@ -544,6 +552,26 @@
   "@aboutFeatureRequestSubtitle": {
     "description": "Subtitle for feature request"
   },
+  "aboutTelegramChannel": "Telegram Channel",
+  "@aboutTelegramChannel": {
+    "description": "Link to Telegram channel"
+  },
+  "aboutTelegramChannelSubtitle": "Announcements and updates",
+  "@aboutTelegramChannelSubtitle": {
+    "description": "Subtitle for Telegram channel"
+  },
+  "aboutTelegramChat": "Telegram Community",
+  "@aboutTelegramChat": {
+    "description": "Link to Telegram chat group"
+  },
+  "aboutTelegramChatSubtitle": "Chat with other users",
+  "@aboutTelegramChatSubtitle": {
+    "description": "Subtitle for Telegram chat"
+  },
+  "aboutSocial": "Social",
+  "@aboutSocial": {
+    "description": "Section for social links"
+  },
   "aboutSupport": "Support",
   "@aboutSupport": {
     "description": "Section for support/donation links"
@@ -1122,6 +1150,15 @@
     "description": "Dialog title - import CSV playlist"
   },
   "dialogImportPlaylistMessage": "Found {count} tracks in CSV. Add them to download queue?",
+  "csvImportTracks": "{count} tracks from CSV",
+  "@csvImportTracks": {
+    "description": "Label shown in quality picker for CSV import",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
   "@dialogImportPlaylistMessage": {
     "description": "Dialog message - import playlist confirmation",
     "placeholders": {
@@ -1851,6 +1888,42 @@
   "@sectionFileSettings": {
     "description": "Settings section header"
   },
+  "sectionLyrics": "Lyrics",
+  "@sectionLyrics": {
+    "description": "Settings section header"
+  },
+  "lyricsMode": "Lyrics Mode",
+  "@lyricsMode": {
+    "description": "Setting - how to save lyrics"
+  },
+  "lyricsModeDescription": "Choose how lyrics are saved with your downloads",
+  "@lyricsModeDescription": {
+    "description": "Lyrics mode picker description"
+  },
+  "lyricsModeEmbed": "Embed in file",
+  "@lyricsModeEmbed": {
+    "description": "Lyrics mode option - embed in audio file"
+  },
+  "lyricsModeEmbedSubtitle": "Lyrics stored inside FLAC metadata",
+  "@lyricsModeEmbedSubtitle": {
+    "description": "Subtitle for embed option"
+  },
+  "lyricsModeExternal": "External .lrc file",
+  "@lyricsModeExternal": {
+    "description": "Lyrics mode option - separate LRC file"
+  },
+  "lyricsModeExternalSubtitle": "Separate .lrc file for players like Samsung Music",
+  "@lyricsModeExternalSubtitle": {
+    "description": "Subtitle for external option"
+  },
+  "lyricsModeBoth": "Both",
+  "@lyricsModeBoth": {
+    "description": "Lyrics mode option - embed and external"
+  },
+  "lyricsModeBothSubtitle": "Embed and save .lrc file",
+  "@lyricsModeBothSubtitle": {
+    "description": "Subtitle for both option"
+  },
   "sectionColor": "Color",
   "@sectionColor": {
     "description": "Settings section header"
@@ -1997,6 +2070,18 @@
   "@trackReleaseDate": {
     "description": "Metadata label - release date"
   },
+  "trackGenre": "Genre",
+  "@trackGenre": {
+    "description": "Metadata label - music genre"
+  },
+  "trackLabel": "Label",
+  "@trackLabel": {
+    "description": "Metadata label - record label"
+  },
+  "trackCopyright": "Copyright",
+  "@trackCopyright": {
+    "description": "Metadata label - copyright information"
+  },
   "trackDownloaded": "Downloaded",
   "@trackDownloaded": {
     "description": "Metadata label - download date"
@@ -2017,6 +2102,18 @@
   "@trackLyricsLoadFailed": {
     "description": "Message when lyrics loading fails"
   },
+  "trackEmbedLyrics": "Embed Lyrics",
+  "@trackEmbedLyrics": {
+    "description": "Action - embed lyrics into audio file"
+  },
+  "trackLyricsEmbedded": "Lyrics embedded successfully",
+  "@trackLyricsEmbedded": {
+    "description": "Snackbar - lyrics saved to file"
+  },
+  "trackInstrumental": "Instrumental track",
+  "@trackInstrumental": {
+    "description": "Message when track is instrumental (no lyrics)"
+  },
   "trackCopiedToClipboard": "Copied to clipboard",
   "@trackCopiedToClipboard": {
     "description": "Snackbar - content copied"
@@ -2328,6 +2425,26 @@
   "@qualityHiResFlacMaxSubtitle": {
     "description": "Technical spec for hi-res max"
   },
+  "qualityMp3": "MP3",
+  "@qualityMp3": {
+    "description": "Quality option - MP3 lossy format"
+  },
+  "qualityMp3Subtitle": "320kbps (converted from FLAC)",
+  "@qualityMp3Subtitle": {
+    "description": "Technical spec for MP3"
+  },
+  "enableMp3Option": "Enable MP3 Option",
+  "@enableMp3Option": {
+    "description": "Setting - enable MP3 quality option"
+  },
+  "enableMp3OptionSubtitleOn": "MP3 quality option is available",
+  "@enableMp3OptionSubtitleOn": {
+    "description": "Subtitle when MP3 is enabled"
+  },
+  "enableMp3OptionSubtitleOff": "Downloads FLAC then converts to 320kbps MP3",
+  "@enableMp3OptionSubtitleOff": {
+    "description": "Subtitle when MP3 is disabled"
+  },
   "qualityNote": "Actual quality depends on track availability from the service",
   "@qualityNote": {
     "description": "Note about quality availability"
@@ -2516,6 +2633,14 @@
   "@albumFolderYearAlbumSubtitle": {
     "description": "Folder structure example"
   },
+  "albumFolderArtistAlbumSingles": "Artist / Album + Singles",
+  "@albumFolderArtistAlbumSingles": {
+    "description": "Album folder option with singles inside artist"
+  },
+  "albumFolderArtistAlbumSinglesSubtitle": "Artist/Album/ and Artist/Singles/",
+  "@albumFolderArtistAlbumSinglesSubtitle": {
+    "description": "Folder structure example"
+  },
   "downloadedAlbumDeleteSelected": "Delete Selected",
   "@downloadedAlbumDeleteSelected": {
     "description": "Button - delete selected tracks"
@@ -2572,6 +2697,16 @@
   "@downloadedAlbumSelectToDelete": {
     "description": "Placeholder when nothing selected"
   },
+  "downloadedAlbumDiscHeader": "Disc {discNumber}",
+  "@downloadedAlbumDiscHeader": {
+    "description": "Header for disc separator in multi-disc albums",
+    "placeholders": {
+      "discNumber": {
+        "type": "int",
+        "example": "1"
+      }
+    }
+  },
   "utilityFunctions": "Utility Functions",
   "@utilityFunctions": {
     "description": "Extension capability - utility functions"
@@ -2611,5 +2746,123 @@
         "description": "Error message"
       }
     }
+  },
+  "discographyDownload": "Download Discography",
+  "@discographyDownload": {
+    "description": "Button - download artist discography"
+  },
+  "discographyDownloadAll": "Download All",
+  "@discographyDownloadAll": {
+    "description": "Option - download entire discography"
+  },
+  "discographyDownloadAllSubtitle": "{count} tracks from {albumCount} releases",
+  "@discographyDownloadAllSubtitle": {
+    "description": "Subtitle showing total tracks and albums",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyAlbumsOnly": "Albums Only",
+  "@discographyAlbumsOnly": {
+    "description": "Option - download only albums"
+  },
+  "discographyAlbumsOnlySubtitle": "{count} tracks from {albumCount} albums",
+  "@discographyAlbumsOnlySubtitle": {
+    "description": "Subtitle showing album tracks count",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySinglesOnly": "Singles & EPs Only",
+  "@discographySinglesOnly": {
+    "description": "Option - download only singles"
+  },
+  "discographySinglesOnlySubtitle": "{count} tracks from {albumCount} singles",
+  "@discographySinglesOnlySubtitle": {
+    "description": "Subtitle showing singles tracks count",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySelectAlbums": "Select Albums...",
+  "@discographySelectAlbums": {
+    "description": "Option - manually select albums to download"
+  },
+  "discographySelectAlbumsSubtitle": "Choose specific albums or singles",
+  "@discographySelectAlbumsSubtitle": {
+    "description": "Subtitle for select albums option"
+  },
+  "discographyFetchingTracks": "Fetching tracks...",
+  "@discographyFetchingTracks": {
+    "description": "Progress - fetching album tracks"
+  },
+  "discographyFetchingAlbum": "Fetching {current} of {total}...",
+  "@discographyFetchingAlbum": {
+    "description": "Progress - fetching specific album",
+    "placeholders": {
+      "current": {
+        "type": "int"
+      },
+      "total": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySelectedCount": "{count} selected",
+  "@discographySelectedCount": {
+    "description": "Selection count badge",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyDownloadSelected": "Download Selected",
+  "@discographyDownloadSelected": {
+    "description": "Button - download selected albums"
+  },
+  "discographyAddedToQueue": "Added {count} tracks to queue",
+  "@discographyAddedToQueue": {
+    "description": "Snackbar - tracks added from discography",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySkippedDownloaded": "{added} added, {skipped} already downloaded",
+  "@discographySkippedDownloaded": {
+    "description": "Snackbar - with skipped tracks count",
+    "placeholders": {
+      "added": {
+        "type": "int"
+      },
+      "skipped": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyNoAlbums": "No albums available",
+  "@discographyNoAlbums": {
+    "description": "Error - no albums found for artist"
+  },
+  "discographyFailedToFetch": "Failed to fetch some albums",
+  "@discographyFailedToFetch": {
+    "description": "Error - some albums failed to load"
   }
 }

lib/l10n/arb/app_pt_PT.arb

@@ -835,19 +835,19 @@
   "@setupIosEmptyFolderWarning": {
     "description": "iOS folder selection warning"
   },
-  "setupDownloadInFlac": "Download Spotify tracks in FLAC",
+  "setupDownloadInFlac": "Baixe faixas do Spotify em FLAC",
   "@setupDownloadInFlac": {
     "description": "App tagline in setup"
   },
-  "setupStepStorage": "Storage",
+  "setupStepStorage": "Armazenamento",
   "@setupStepStorage": {
     "description": "Setup step indicator - storage"
   },
-  "setupStepNotification": "Notification",
+  "setupStepNotification": "Notificação",
   "@setupStepNotification": {
     "description": "Setup step indicator - notification"
   },
-  "setupStepFolder": "Folder",
+  "setupStepFolder": "Pasta",
   "@setupStepFolder": {
     "description": "Setup step indicator - folder"
   },
@@ -855,19 +855,19 @@
   "@setupStepSpotify": {
     "description": "Setup step indicator - Spotify API"
   },
-  "setupStepPermission": "Permission",
+  "setupStepPermission": "Permissão",
   "@setupStepPermission": {
     "description": "Setup step indicator - permission"
   },
-  "setupStorageGranted": "Storage Permission Granted!",
+  "setupStorageGranted": "Permissão de Armazenamento Concedida!",
   "@setupStorageGranted": {
     "description": "Success message for storage permission"
   },
-  "setupStorageRequired": "Storage Permission Required",
+  "setupStorageRequired": "Permissão de Armazenamento Necessária",
   "@setupStorageRequired": {
     "description": "Title when storage permission needed"
   },
-  "setupStorageDescription": "SpotiFLAC needs storage permission to save your downloaded music files.",
+  "setupStorageDescription": "O SpotiFLAC precisa de permissão de armazenamento para salvar os seus arquivos de música baixados.",
   "@setupStorageDescription": {
     "description": "Explanation for storage permission"
   },
@@ -1071,23 +1071,23 @@
   "@dialogClearAllDownloads": {
     "description": "Dialog message - clear downloads confirmation"
   },
-  "dialogRemoveFromDevice": "Remove from device?",
+  "dialogRemoveFromDevice": "Remover do dispositivo?",
   "@dialogRemoveFromDevice": {
     "description": "Dialog title - delete file confirmation"
   },
-  "dialogRemoveExtension": "Remove Extension",
+  "dialogRemoveExtension": "Remover Extensão",
   "@dialogRemoveExtension": {
     "description": "Dialog title - uninstall extension"
   },
-  "dialogRemoveExtensionMessage": "Are you sure you want to remove this extension? This cannot be undone.",
+  "dialogRemoveExtensionMessage": "Tem certeza de que deseja remover esta extensão? Isso não pode ser desfeito.",
   "@dialogRemoveExtensionMessage": {
     "description": "Dialog message - uninstall confirmation"
   },
-  "dialogUninstallExtension": "Uninstall Extension?",
+  "dialogUninstallExtension": "Desinstalar Extensão?",
   "@dialogUninstallExtension": {
     "description": "Dialog title - uninstall extension"
   },
-  "dialogUninstallExtensionMessage": "Are you sure you want to remove {extensionName}?",
+  "dialogUninstallExtensionMessage": "Tem certeza de que deseja remover {extensionName}?",
   "@dialogUninstallExtensionMessage": {
     "description": "Dialog message - uninstall specific extension",
     "placeholders": {
@@ -1096,19 +1096,19 @@
       }
     }
   },
-  "dialogClearHistoryTitle": "Clear History",
+  "dialogClearHistoryTitle": "Limpar Histórico",
   "@dialogClearHistoryTitle": {
     "description": "Dialog title - clear download history"
   },
-  "dialogClearHistoryMessage": "Are you sure you want to clear all download history? This cannot be undone.",
+  "dialogClearHistoryMessage": "Tem certeza de que deseja limpar todo o histórico de downloads? Isso não pode ser desfeito.",
   "@dialogClearHistoryMessage": {
     "description": "Dialog message - clear history confirmation"
   },
-  "dialogDeleteSelectedTitle": "Delete Selected",
+  "dialogDeleteSelectedTitle": "Apagar Selecionados",
   "@dialogDeleteSelectedTitle": {
     "description": "Dialog title - delete selected items"
   },
-  "dialogDeleteSelectedMessage": "Delete {count} {count, plural, =1{track} other{tracks}} from history?\n\nThis will also delete the files from storage.",
+  "dialogDeleteSelectedMessage": "Apagar {count} {count, plural, =1{faixa} other{faixas}} do histórico?\n\nIsso também apagará os arquivos do armazenamento.",
   "@dialogDeleteSelectedMessage": {
     "description": "Dialog message - delete selected tracks",
     "placeholders": {
@@ -1117,11 +1117,11 @@
       }
     }
   },
-  "dialogImportPlaylistTitle": "Import Playlist",
+  "dialogImportPlaylistTitle": "Importar Playlist",
   "@dialogImportPlaylistTitle": {
     "description": "Dialog title - import CSV playlist"
   },
-  "dialogImportPlaylistMessage": "Found {count} tracks in CSV. Add them to download queue?",
+  "dialogImportPlaylistMessage": "Encontradas {count} faixas no CSV. Adicionar à fila de download?",
   "@dialogImportPlaylistMessage": {
     "description": "Dialog message - import playlist confirmation",
     "placeholders": {
@@ -1130,7 +1130,7 @@
       }
     }
   },
-  "snackbarAddedToQueue": "Added \"{trackName}\" to queue",
+  "snackbarAddedToQueue": "\"{trackName}\" adicionada à fila",
   "@snackbarAddedToQueue": {
     "description": "Snackbar - track added to download queue",
     "placeholders": {
@@ -1139,7 +1139,7 @@
       }
     }
   },
-  "snackbarAddedTracksToQueue": "Added {count} tracks to queue",
+  "snackbarAddedTracksToQueue": "{count} faixas adicionadas à fila",
   "@snackbarAddedTracksToQueue": {
     "description": "Snackbar - multiple tracks added to queue",
     "placeholders": {
@@ -1148,7 +1148,7 @@
       }
     }
   },
-  "snackbarAlreadyDownloaded": "\"{trackName}\" already downloaded",
+  "snackbarAlreadyDownloaded": "\"{trackName}\" já foi baixada",
   "@snackbarAlreadyDownloaded": {
     "description": "Snackbar - track already exists",
     "placeholders": {
@@ -1157,19 +1157,19 @@
       }
     }
   },
-  "snackbarHistoryCleared": "History cleared",
+  "snackbarHistoryCleared": "Histórico limpo",
   "@snackbarHistoryCleared": {
     "description": "Snackbar - history deleted"
   },
-  "snackbarCredentialsSaved": "Credentials saved",
+  "snackbarCredentialsSaved": "Credenciais salvas",
   "@snackbarCredentialsSaved": {
     "description": "Snackbar - Spotify credentials saved"
   },
-  "snackbarCredentialsCleared": "Credentials cleared",
+  "snackbarCredentialsCleared": "Credenciais removidas",
   "@snackbarCredentialsCleared": {
     "description": "Snackbar - Spotify credentials removed"
   },
-  "snackbarDeletedTracks": "Deleted {count} {count, plural, =1{track} other{tracks}}",
+  "snackbarDeletedTracks": "{count} {count, plural, =1{faixa apagada} other{faixas apagadas}}",
   "@snackbarDeletedTracks": {
     "description": "Snackbar - tracks deleted",
     "placeholders": {
@@ -1178,7 +1178,7 @@
       }
     }
   },
-  "snackbarCannotOpenFile": "Cannot open file: {error}",
+  "snackbarCannotOpenFile": "Não foi possível abrir o arquivo: {error}",
   "@snackbarCannotOpenFile": {
     "description": "Snackbar - file open error",
     "placeholders": {
@@ -1187,15 +1187,15 @@
       }
     }
   },
-  "snackbarFillAllFields": "Please fill all fields",
+  "snackbarFillAllFields": "Por favor, preencha todos os campos",
   "@snackbarFillAllFields": {
     "description": "Snackbar - validation error"
   },
-  "snackbarViewQueue": "View Queue",
+  "snackbarViewQueue": "Ver Fila",
   "@snackbarViewQueue": {
     "description": "Snackbar action - view download queue"
   },
-  "snackbarFailedToLoad": "Failed to load: {error}",
+  "snackbarFailedToLoad": "Falha ao carregar: {error}",
   "@snackbarFailedToLoad": {
     "description": "Snackbar - loading error",
     "placeholders": {
@@ -1204,7 +1204,7 @@
       }
     }
   },
-  "snackbarUrlCopied": "{platform} URL copied to clipboard",
+  "snackbarUrlCopied": "URL do {platform} copiada para a área de transferência",
   "@snackbarUrlCopied": {
     "description": "Snackbar - URL copied",
     "placeholders": {
@@ -1214,23 +1214,23 @@
       }
     }
   },
-  "snackbarFileNotFound": "File not found",
+  "snackbarFileNotFound": "Arquivo não encontrado",
   "@snackbarFileNotFound": {
     "description": "Snackbar - file doesn't exist"
   },
-  "snackbarSelectExtFile": "Please select a .spotiflac-ext file",
+  "snackbarSelectExtFile": "Por favor, selecione um arquivo .spotiflac-ext",
   "@snackbarSelectExtFile": {
     "description": "Snackbar - wrong file type selected"
   },
-  "snackbarProviderPrioritySaved": "Provider priority saved",
+  "snackbarProviderPrioritySaved": "Prioridade de provedor salva",
   "@snackbarProviderPrioritySaved": {
     "description": "Snackbar - provider order saved"
   },
-  "snackbarMetadataProviderSaved": "Metadata provider priority saved",
+  "snackbarMetadataProviderSaved": "Prioridade de provedor de metadados salva",
   "@snackbarMetadataProviderSaved": {
     "description": "Snackbar - metadata provider order saved"
   },
-  "snackbarExtensionInstalled": "{extensionName} installed.",
+  "snackbarExtensionInstalled": "{extensionName} instalada.",
   "@snackbarExtensionInstalled": {
     "description": "Snackbar - extension installed successfully",
     "placeholders": {
@@ -1239,7 +1239,7 @@
       }
     }
   },
-  "snackbarExtensionUpdated": "{extensionName} updated.",
+  "snackbarExtensionUpdated": "{extensionName} atualizada.",
   "@snackbarExtensionUpdated": {
     "description": "Snackbar - extension updated successfully",
     "placeholders": {
@@ -1248,23 +1248,23 @@
       }
     }
   },
-  "snackbarFailedToInstall": "Failed to install extension",
+  "snackbarFailedToInstall": "Falha ao instalar extensão",
   "@snackbarFailedToInstall": {
     "description": "Snackbar - extension install error"
   },
-  "snackbarFailedToUpdate": "Failed to update extension",
+  "snackbarFailedToUpdate": "Falha ao atualizar extensão",
   "@snackbarFailedToUpdate": {
     "description": "Snackbar - extension update error"
   },
-  "errorRateLimited": "Rate Limited",
+  "errorRateLimited": "Taxa Limitada",
   "@errorRateLimited": {
     "description": "Error title - too many requests"
   },
-  "errorRateLimitedMessage": "Too many requests. Please wait a moment before searching again.",
+  "errorRateLimitedMessage": "Muitas solicitações. Por favor, aguarde um momento antes de pesquisar novamente.",
   "@errorRateLimitedMessage": {
     "description": "Error message - rate limit explanation"
   },
-  "errorFailedToLoad": "Failed to load {item}",
+  "errorFailedToLoad": "Falha ao carregar {item}",
   "@errorFailedToLoad": {
     "description": "Error message - loading failed",
     "placeholders": {
@@ -1274,11 +1274,11 @@
       }
     }
   },
-  "errorNoTracksFound": "No tracks found",
+  "errorNoTracksFound": "Nenhuma faixa encontrada",
   "@errorNoTracksFound": {
     "description": "Error - search returned no results"
   },
-  "errorMissingExtensionSource": "Cannot load {item}: missing extension source",
+  "errorMissingExtensionSource": "Não foi possível carregar {item}: fonte de extensão ausente",
   "@errorMissingExtensionSource": {
     "description": "Error - extension source not available",
     "placeholders": {
@@ -1287,23 +1287,23 @@
       }
     }
   },
-  "statusQueued": "Queued",
+  "statusQueued": "Na Fila",
   "@statusQueued": {
     "description": "Download status - waiting in queue"
   },
-  "statusDownloading": "Downloading",
+  "statusDownloading": "Baixando",
   "@statusDownloading": {
     "description": "Download status - in progress"
   },
-  "statusFinalizing": "Finalizing",
+  "statusFinalizing": "Finalizando",
   "@statusFinalizing": {
     "description": "Download status - writing metadata"
   },
-  "statusCompleted": "Completed",
+  "statusCompleted": "Concluído",
   "@statusCompleted": {
     "description": "Download status - finished"
   },
-  "statusFailed": "Failed",
+  "statusFailed": "Falhou",
   "@statusFailed": {
     "description": "Download status - error occurred"
   },
@@ -1735,19 +1735,19 @@
   "@logNetworkErrorDescription": {
     "description": "Network error explanation"
   },
-  "logNetworkErrorSuggestion": "Check your internet connection",
+  "logNetworkErrorSuggestion": "Verifique a sua conexão com a internet",
   "@logNetworkErrorSuggestion": {
     "description": "Network error fix suggestion"
   },
-  "logTrackNotFoundDescription": "Some tracks could not be found on download services",
+  "logTrackNotFoundDescription": "Algumas faixas não foram encontradas nos serviços de download",
   "@logTrackNotFoundDescription": {
     "description": "Track not found explanation"
   },
-  "logTrackNotFoundSuggestion": "The track may not be available in lossless quality",
+  "logTrackNotFoundSuggestion": "A faixa pode não estar disponível em qualidade lossless",
   "@logTrackNotFoundSuggestion": {
     "description": "Track not found explanation"
   },
-  "logTotalErrors": "Total errors: {count}",
+  "logTotalErrors": "Total de erros: {count}",
   "@logTotalErrors": {
     "description": "Error count display",
     "placeholders": {
@@ -1756,7 +1756,7 @@
       }
     }
   },
-  "logAffected": "Affected: {domains}",
+  "logAffected": "Afetados: {domains}",
   "@logAffected": {
     "description": "Affected domains display",
     "placeholders": {
@@ -1765,7 +1765,7 @@
       }
     }
   },
-  "logEntriesFiltered": "Entries ({count} filtered)",
+  "logEntriesFiltered": "Entradas ({count} filtradas)",
   "@logEntriesFiltered": {
     "description": "Log count with filter active",
     "placeholders": {
@@ -1774,7 +1774,7 @@
       }
     }
   },
-  "logEntries": "Entries ({count})",
+  "logEntries": "Entradas ({count})",
   "@logEntries": {
     "description": "Total log count",
     "placeholders": {
@@ -1783,11 +1783,11 @@
       }
     }
   },
-  "credentialsTitle": "Spotify Credentials",
+  "credentialsTitle": "Credenciais do Spotify",
   "@credentialsTitle": {
     "description": "Credentials dialog title"
   },
-  "credentialsDescription": "Enter your Client ID and Secret to use your own Spotify application quota.",
+  "credentialsDescription": "Insira o seu Client ID e Secret para usar a sua própria cota de aplicativo do Spotify.",
   "@credentialsDescription": {
     "description": "Credentials dialog explanation"
   },
@@ -2001,35 +2001,35 @@
   "@trackDownloaded": {
     "description": "Metadata label - download date"
   },
-  "trackCopyLyrics": "Copy lyrics",
+  "trackCopyLyrics": "Copiar letras",
   "@trackCopyLyrics": {
     "description": "Action - copy lyrics to clipboard"
   },
-  "trackLyricsNotAvailable": "Lyrics not available for this track",
+  "trackLyricsNotAvailable": "Letras não disponíveis para esta faixa",
   "@trackLyricsNotAvailable": {
     "description": "Message when lyrics not found"
   },
-  "trackLyricsTimeout": "Request timed out. Try again later.",
+  "trackLyricsTimeout": "A solicitação expirou. Tente novamente mais tarde.",
   "@trackLyricsTimeout": {
     "description": "Message when lyrics request times out"
   },
-  "trackLyricsLoadFailed": "Failed to load lyrics",
+  "trackLyricsLoadFailed": "Falha ao carregar letras",
   "@trackLyricsLoadFailed": {
     "description": "Message when lyrics loading fails"
   },
-  "trackCopiedToClipboard": "Copied to clipboard",
+  "trackCopiedToClipboard": "Copiado para a área de transferência",
   "@trackCopiedToClipboard": {
     "description": "Snackbar - content copied"
   },
-  "trackDeleteConfirmTitle": "Remove from device?",
+  "trackDeleteConfirmTitle": "Remover do dispositivo?",
   "@trackDeleteConfirmTitle": {
     "description": "Delete confirmation title"
   },
-  "trackDeleteConfirmMessage": "This will permanently delete the downloaded file and remove it from your history.",
+  "trackDeleteConfirmMessage": "Isso apagará permanentemente o arquivo baixado e o removerá do seu histórico.",
   "@trackDeleteConfirmMessage": {
     "description": "Delete confirmation message"
   },
-  "trackCannotOpen": "Cannot open: {message}",
+  "trackCannotOpen": "Não foi possível abrir: {message}",
   "@trackCannotOpen": {
     "description": "Error opening file",
     "placeholders": {
@@ -2038,15 +2038,15 @@
       }
     }
   },
-  "dateToday": "Today",
+  "dateToday": "Hoje",
   "@dateToday": {
     "description": "Relative date - today"
   },
-  "dateYesterday": "Yesterday",
+  "dateYesterday": "Ontem",
   "@dateYesterday": {
     "description": "Relative date - yesterday"
   },
-  "dateDaysAgo": "{count} days ago",
+  "dateDaysAgo": "Há {count} dias",
   "@dateDaysAgo": {
     "description": "Relative date - days ago",
     "placeholders": {
@@ -2055,7 +2055,7 @@
       }
     }
   },
-  "dateWeeksAgo": "{count} weeks ago",
+  "dateWeeksAgo": "Há {count} semanas",
   "@dateWeeksAgo": {
     "description": "Relative date - weeks ago",
     "placeholders": {
@@ -2064,7 +2064,7 @@
       }
     }
   },
-  "dateMonthsAgo": "{count} months ago",
+  "dateMonthsAgo": "Há {count} meses",
   "@dateMonthsAgo": {
     "description": "Relative date - months ago",
     "placeholders": {
@@ -2073,27 +2073,27 @@
       }
     }
   },
-  "concurrentSequential": "Sequential",
+  "concurrentSequential": "Sequencial",
   "@concurrentSequential": {
     "description": "Download mode - one at a time"
   },
-  "concurrentParallel2": "2 Parallel",
+  "concurrentParallel2": "2 Paralelos",
   "@concurrentParallel2": {
     "description": "Download mode - 2 simultaneous"
   },
-  "concurrentParallel3": "3 Parallel",
+  "concurrentParallel3": "3 Paralelos",
   "@concurrentParallel3": {
     "description": "Download mode - 3 simultaneous"
   },
-  "tapToSeeError": "Tap to see error details",
+  "tapToSeeError": "Toque para ver detalhes do erro",
   "@tapToSeeError": {
     "description": "Tooltip for failed download"
   },
-  "storeFilterAll": "All",
+  "storeFilterAll": "Todos",
   "@storeFilterAll": {
     "description": "Store filter - all extensions"
   },
-  "storeFilterMetadata": "Metadata",
+  "storeFilterMetadata": "Metadados",
   "@storeFilterMetadata": {
     "description": "Store filter - metadata providers"
   },
@@ -2101,43 +2101,43 @@
   "@storeFilterDownload": {
     "description": "Store filter - download providers"
   },
-  "storeFilterUtility": "Utility",
+  "storeFilterUtility": "Utilitário",
   "@storeFilterUtility": {
     "description": "Store filter - utility extensions"
   },
-  "storeFilterLyrics": "Lyrics",
+  "storeFilterLyrics": "Letras",
   "@storeFilterLyrics": {
     "description": "Store filter - lyrics providers"
   },
-  "storeFilterIntegration": "Integration",
+  "storeFilterIntegration": "Integração",
   "@storeFilterIntegration": {
     "description": "Store filter - integrations"
   },
-  "storeClearFilters": "Clear filters",
+  "storeClearFilters": "Limpar filtros",
   "@storeClearFilters": {
     "description": "Button to clear all filters"
   },
-  "storeNoResults": "No extensions found",
+  "storeNoResults": "Nenhuma extensão encontrada",
   "@storeNoResults": {
     "description": "Empty state when no extensions match filters"
   },
-  "extensionProviderPriority": "Provider Priority",
+  "extensionProviderPriority": "Prioridade de Provedor",
   "@extensionProviderPriority": {
     "description": "Extension capability - provider priority"
   },
-  "extensionInstallButton": "Install Extension",
+  "extensionInstallButton": "Instalar Extensão",
   "@extensionInstallButton": {
     "description": "Button to install extension"
   },
-  "extensionDefaultProvider": "Default (Deezer/Spotify)",
+  "extensionDefaultProvider": "Padrão (Deezer/Spotify)",
   "@extensionDefaultProvider": {
     "description": "Default search provider option"
   },
-  "extensionDefaultProviderSubtitle": "Use built-in search",
+  "extensionDefaultProviderSubtitle": "Usar pesquisa integrada",
   "@extensionDefaultProviderSubtitle": {
     "description": "Subtitle for default provider"
   },
-  "extensionAuthor": "Author",
+  "extensionAuthor": "Autor",
   "@extensionAuthor": {
     "description": "Extension detail - author"
   },
@@ -2145,43 +2145,43 @@
   "@extensionId": {
     "description": "Extension detail - unique ID"
   },
-  "extensionError": "Error",
+  "extensionError": "Erro",
   "@extensionError": {
     "description": "Extension detail - error message"
   },
-  "extensionCapabilities": "Capabilities",
+  "extensionCapabilities": "Capacidades",
   "@extensionCapabilities": {
     "description": "Section header - extension features"
   },
-  "extensionMetadataProvider": "Metadata Provider",
+  "extensionMetadataProvider": "Provedor de Metadados",
   "@extensionMetadataProvider": {
     "description": "Capability - provides metadata"
   },
-  "extensionDownloadProvider": "Download Provider",
+  "extensionDownloadProvider": "Provedor de Download",
   "@extensionDownloadProvider": {
     "description": "Capability - provides downloads"
   },
-  "extensionLyricsProvider": "Lyrics Provider",
+  "extensionLyricsProvider": "Provedor de Letras",
   "@extensionLyricsProvider": {
     "description": "Capability - provides lyrics"
   },
-  "extensionUrlHandler": "URL Handler",
+  "extensionUrlHandler": "Manipulador de URL",
   "@extensionUrlHandler": {
     "description": "Capability - handles URLs"
   },
-  "extensionQualityOptions": "Quality Options",
+  "extensionQualityOptions": "Opções de Qualidade",
   "@extensionQualityOptions": {
     "description": "Capability - quality selection"
   },
-  "extensionPostProcessingHooks": "Post-Processing Hooks",
+  "extensionPostProcessingHooks": "Ganchos de Pós-Processamento",
   "@extensionPostProcessingHooks": {
     "description": "Capability - post-processing"
   },
-  "extensionPermissions": "Permissions",
+  "extensionPermissions": "Permissões",
   "@extensionPermissions": {
     "description": "Section header - required permissions"
   },
-  "extensionSettings": "Settings",
+  "extensionSettings": "Configurações",
   "@extensionSettings": {
     "description": "Section header - extension settings"
   },
@@ -2376,31 +2376,31 @@
   "@folderNone": {
     "description": "Folder option - no organization"
   },
-  "folderNoneSubtitle": "Save all files directly to download folder",
+  "folderNoneSubtitle": "Salvar todos os arquivos diretamente na pasta de download",
   "@folderNoneSubtitle": {
     "description": "Subtitle for no folder organization"
   },
-  "folderArtist": "Artist",
+  "folderArtist": "Artista",
   "@folderArtist": {
     "description": "Folder option - by artist"
   },
-  "folderArtistSubtitle": "Artist Name/filename",
+  "folderArtistSubtitle": "Nome do Artista/nome do arquivo",
   "@folderArtistSubtitle": {
     "description": "Folder structure example"
   },
-  "folderAlbum": "Album",
+  "folderAlbum": "Álbum",
   "@folderAlbum": {
     "description": "Folder option - by album"
   },
-  "folderAlbumSubtitle": "Album Name/filename",
+  "folderAlbumSubtitle": "Nome do Álbum/nome do arquivo",
   "@folderAlbumSubtitle": {
     "description": "Folder structure example"
   },
-  "folderArtistAlbum": "Artist/Album",
+  "folderArtistAlbum": "Artista/Álbum",
   "@folderArtistAlbum": {
     "description": "Folder option - nested"
   },
-  "folderArtistAlbumSubtitle": "Artist Name/Album Name/filename",
+  "folderArtistAlbumSubtitle": "Nome do Artista/Nome do Álbum/nome do arquivo",
   "@folderArtistAlbumSubtitle": {
     "description": "Folder structure example"
   },
@@ -2424,103 +2424,103 @@
   "@serviceSpotify": {
     "description": "Service name - DO NOT TRANSLATE"
   },
-  "appearanceAmoledDark": "AMOLED Dark",
+  "appearanceAmoledDark": "AMOLED Escuro",
   "@appearanceAmoledDark": {
     "description": "Theme option - pure black"
   },
-  "appearanceAmoledDarkSubtitle": "Pure black background",
+  "appearanceAmoledDarkSubtitle": "Fundo preto puro",
   "@appearanceAmoledDarkSubtitle": {
     "description": "Subtitle for AMOLED dark"
   },
-  "appearanceChooseAccentColor": "Choose Accent Color",
+  "appearanceChooseAccentColor": "Escolher Cor de Destaque",
   "@appearanceChooseAccentColor": {
     "description": "Color picker dialog title"
   },
-  "appearanceChooseTheme": "Theme Mode",
+  "appearanceChooseTheme": "Modo de Tema",
   "@appearanceChooseTheme": {
     "description": "Theme picker dialog title"
   },
-  "queueTitle": "Download Queue",
+  "queueTitle": "Fila de Download",
   "@queueTitle": {
     "description": "Queue screen title"
   },
-  "queueClearAll": "Clear All",
+  "queueClearAll": "Limpar Tudo",
   "@queueClearAll": {
     "description": "Button - clear all queue items"
   },
-  "queueClearAllMessage": "Are you sure you want to clear all downloads?",
+  "queueClearAllMessage": "Tem certeza de que deseja limpar todos os downloads?",
   "@queueClearAllMessage": {
     "description": "Clear queue confirmation"
   },
-  "queueEmpty": "No downloads in queue",
+  "queueEmpty": "Nenhum download na fila",
   "@queueEmpty": {
     "description": "Empty queue state title"
   },
-  "queueEmptySubtitle": "Add tracks from the home screen",
+  "queueEmptySubtitle": "Adicione faixas a partir da tela inicial",
   "@queueEmptySubtitle": {
     "description": "Empty queue state subtitle"
   },
-  "queueClearCompleted": "Clear completed",
+  "queueClearCompleted": "Limpar concluídos",
   "@queueClearCompleted": {
     "description": "Button - clear finished downloads"
   },
-  "queueDownloadFailed": "Download Failed",
+  "queueDownloadFailed": "Download Falhou",
   "@queueDownloadFailed": {
     "description": "Error dialog title"
   },
-  "queueTrackLabel": "Track:",
+  "queueTrackLabel": "Faixa:",
   "@queueTrackLabel": {
     "description": "Label in error dialog"
   },
-  "queueArtistLabel": "Artist:",
+  "queueArtistLabel": "Artista:",
   "@queueArtistLabel": {
     "description": "Label in error dialog"
   },
-  "queueErrorLabel": "Error:",
+  "queueErrorLabel": "Erro:",
   "@queueErrorLabel": {
     "description": "Label in error dialog"
   },
-  "queueUnknownError": "Unknown error",
+  "queueUnknownError": "Erro desconhecido",
   "@queueUnknownError": {
     "description": "Fallback error message"
   },
-  "albumFolderArtistAlbum": "Artist / Album",
+  "albumFolderArtistAlbum": "Artista / Álbum",
   "@albumFolderArtistAlbum": {
     "description": "Album folder option"
   },
-  "albumFolderArtistAlbumSubtitle": "Albums/Artist Name/Album Name/",
+  "albumFolderArtistAlbumSubtitle": "Álbuns/Nome do Artista/Nome do Álbum/",
   "@albumFolderArtistAlbumSubtitle": {
     "description": "Folder structure example"
   },
-  "albumFolderArtistYearAlbum": "Artist / [Year] Album",
+  "albumFolderArtistYearAlbum": "Artista / [Ano] Álbum",
   "@albumFolderArtistYearAlbum": {
     "description": "Album folder option with year"
   },
-  "albumFolderArtistYearAlbumSubtitle": "Albums/Artist Name/[2005] Album Name/",
+  "albumFolderArtistYearAlbumSubtitle": "Álbuns/Nome do Artista/[2005] Nome do Álbum/",
   "@albumFolderArtistYearAlbumSubtitle": {
     "description": "Folder structure example"
   },
-  "albumFolderAlbumOnly": "Album Only",
+  "albumFolderAlbumOnly": "Apenas Álbum",
   "@albumFolderAlbumOnly": {
     "description": "Album folder option"
   },
-  "albumFolderAlbumOnlySubtitle": "Albums/Album Name/",
+  "albumFolderAlbumOnlySubtitle": "Álbuns/Nome do Álbum/",
   "@albumFolderAlbumOnlySubtitle": {
     "description": "Folder structure example"
   },
-  "albumFolderYearAlbum": "[Year] Album",
+  "albumFolderYearAlbum": "[Ano] Álbum",
   "@albumFolderYearAlbum": {
     "description": "Album folder option with year"
   },
-  "albumFolderYearAlbumSubtitle": "Albums/[2005] Album Name/",
+  "albumFolderYearAlbumSubtitle": "Álbuns/[2005] Nome do Álbum/",
   "@albumFolderYearAlbumSubtitle": {
     "description": "Folder structure example"
   },
-  "downloadedAlbumDeleteSelected": "Delete Selected",
+  "downloadedAlbumDeleteSelected": "Apagar Selecionados",
   "@downloadedAlbumDeleteSelected": {
     "description": "Button - delete selected tracks"
   },
-  "downloadedAlbumDeleteMessage": "Delete {count} {count, plural, =1{track} other{tracks}} from this album?\n\nThis will also delete the files from storage.",
+  "downloadedAlbumDeleteMessage": "Apagar {count} {count, plural, =1{faixa} other{faixas}} deste álbum?\n\nIsso também apagará os arquivos do armazenamento.",
   "@downloadedAlbumDeleteMessage": {
     "description": "Delete confirmation with count",
     "placeholders": {
@@ -2529,11 +2529,11 @@
       }
     }
   },
-  "downloadedAlbumTracksHeader": "Tracks",
+  "downloadedAlbumTracksHeader": "Faixas",
   "@downloadedAlbumTracksHeader": {
     "description": "Section header for tracks"
   },
-  "downloadedAlbumDownloadedCount": "{count} downloaded",
+  "downloadedAlbumDownloadedCount": "{count} baixadas",
   "@downloadedAlbumDownloadedCount": {
     "description": "Downloaded tracks count badge",
     "placeholders": {
@@ -2542,7 +2542,7 @@
       }
     }
   },
-  "downloadedAlbumSelectedCount": "{count} selected",
+  "downloadedAlbumSelectedCount": "{count} selecionadas",
   "@downloadedAlbumSelectedCount": {
     "description": "Selection count indicator",
     "placeholders": {
@@ -2551,15 +2551,15 @@
       }
     }
   },
-  "downloadedAlbumAllSelected": "All tracks selected",
+  "downloadedAlbumAllSelected": "Todas as faixas selecionadas",
   "@downloadedAlbumAllSelected": {
     "description": "Status - all items selected"
   },
-  "downloadedAlbumTapToSelect": "Tap tracks to select",
+  "downloadedAlbumTapToSelect": "Toque nas faixas para selecionar",
   "@downloadedAlbumTapToSelect": {
     "description": "Selection hint"
   },
-  "downloadedAlbumDeleteCount": "Delete {count} {count, plural, =1{track} other{tracks}}",
+  "downloadedAlbumDeleteCount": "Apagar {count} {count, plural, =1{faixa} other{faixas}}",
   "@downloadedAlbumDeleteCount": {
     "description": "Delete button text with count",
     "placeholders": {
@@ -2568,23 +2568,23 @@
       }
     }
   },
-  "downloadedAlbumSelectToDelete": "Select tracks to delete",
+  "downloadedAlbumSelectToDelete": "Selecione faixas para apagar",
   "@downloadedAlbumSelectToDelete": {
     "description": "Placeholder when nothing selected"
   },
-  "utilityFunctions": "Utility Functions",
+  "utilityFunctions": "Funções Utilitárias",
   "@utilityFunctions": {
     "description": "Extension capability - utility functions"
   },
-  "recentTypeArtist": "Artist",
+  "recentTypeArtist": "Artista",
   "@recentTypeArtist": {
     "description": "Recent access item type - artist"
   },
-  "recentTypeAlbum": "Album",
+  "recentTypeAlbum": "Álbum",
   "@recentTypeAlbum": {
     "description": "Recent access item type - album"
   },
-  "recentTypeSong": "Song",
+  "recentTypeSong": "Música",
   "@recentTypeSong": {
     "description": "Recent access item type - song/track"
   },
@@ -2602,7 +2602,7 @@
       }
     }
   },
-  "errorGeneric": "Error: {message}",
+  "errorGeneric": "Erro: {message}",
   "@errorGeneric": {
     "description": "Generic error message format",
     "placeholders": {

lib/l10n/arb/app_ru.arb

@@ -127,6 +127,10 @@
   "@historyNoSinglesSubtitle": {
     "description": "Empty state subtitle for singles filter"
   },
+  "historySearchHint": "Поиск в истории...",
+  "@historySearchHint": {
+    "description": "Search bar placeholder in history"
+  },
   "settingsTitle": "Настройки",
   "@settingsTitle": {
     "description": "Settings screen title"
@@ -512,6 +516,10 @@
   "@aboutLogoArtist": {
     "description": "Role description for logo artist"
   },
+  "aboutTranslators": "Переводчики",
+  "@aboutTranslators": {
+    "description": "Section for translators"
+  },
   "aboutSpecialThanks": "Особая благодарность",
   "@aboutSpecialThanks": {
     "description": "Section for special thanks"
@@ -544,6 +552,26 @@
   "@aboutFeatureRequestSubtitle": {
     "description": "Subtitle for feature request"
   },
+  "aboutTelegramChannel": "Telegram канал",
+  "@aboutTelegramChannel": {
+    "description": "Link to Telegram channel"
+  },
+  "aboutTelegramChannelSubtitle": "Объявления и обновления",
+  "@aboutTelegramChannelSubtitle": {
+    "description": "Subtitle for Telegram channel"
+  },
+  "aboutTelegramChat": "Сообщество в Telegram",
+  "@aboutTelegramChat": {
+    "description": "Link to Telegram chat group"
+  },
+  "aboutTelegramChatSubtitle": "Чат с другими пользователями",
+  "@aboutTelegramChatSubtitle": {
+    "description": "Subtitle for Telegram chat"
+  },
+  "aboutSocial": "Соцсети",
+  "@aboutSocial": {
+    "description": "Section for social links"
+  },
   "aboutSupport": "Поддержка",
   "@aboutSupport": {
     "description": "Section for support/donation links"
@@ -1108,7 +1136,7 @@
   "@dialogDeleteSelectedTitle": {
     "description": "Dialog title - delete selected items"
   },
-  "dialogDeleteSelectedMessage": "Удалить {count} {count, plural, one {трек} few {трека} many {треков} other{треков}} из истории?\n\nЭто также удалит файлы из хранилища.",
+  "dialogDeleteSelectedMessage": "Удалить {count} {count, plural, one {трек} few {трека} many {треков} other {треков}} из истории?\n\nЭто также удалит файлы из хранилища.",
   "@dialogDeleteSelectedMessage": {
     "description": "Dialog message - delete selected tracks",
     "placeholders": {
@@ -1122,6 +1150,15 @@
     "description": "Dialog title - import CSV playlist"
   },
   "dialogImportPlaylistMessage": "Найдено {count} треков в CSV. Добавить их в очередь загрузки?",
+  "csvImportTracks": "{count} треков из CSV",
+  "@csvImportTracks": {
+    "description": "Label shown in quality picker for CSV import",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
   "@dialogImportPlaylistMessage": {
     "description": "Dialog message - import playlist confirmation",
     "placeholders": {
@@ -1169,7 +1206,7 @@
   "@snackbarCredentialsCleared": {
     "description": "Snackbar - Spotify credentials removed"
   },
-  "snackbarDeletedTracks": "Удалено {count} {count, plural, one {трек} few {трека} many {треков} other{треков}}",
+  "snackbarDeletedTracks": "Удалено {count} {count, plural, one {трек} few {трека} many {треков} other {треков}}",
   "@snackbarDeletedTracks": {
     "description": "Snackbar - tracks deleted",
     "placeholders": {
@@ -1376,7 +1413,7 @@
   "@selectionTapToSelect": {
     "description": "Hint - how to select items"
   },
-  "selectionDeleteTracks": "Удалить {count} {count, plural, one {трек} few {трека} many {треков} other{треков}}",
+  "selectionDeleteTracks": "Удалить {count} {count, plural, one {трек} few {трека} many {треков} other {треков}}",
   "@selectionDeleteTracks": {
     "description": "Delete button with count",
     "placeholders": {
@@ -1851,6 +1888,42 @@
   "@sectionFileSettings": {
     "description": "Settings section header"
   },
+  "sectionLyrics": "Тексты песен",
+  "@sectionLyrics": {
+    "description": "Settings section header"
+  },
+  "lyricsMode": "Режим текстов песен",
+  "@lyricsMode": {
+    "description": "Setting - how to save lyrics"
+  },
+  "lyricsModeDescription": "Выберите как сохранить тексты песен при скачивании",
+  "@lyricsModeDescription": {
+    "description": "Lyrics mode picker description"
+  },
+  "lyricsModeEmbed": "Вставить в файл",
+  "@lyricsModeEmbed": {
+    "description": "Lyrics mode option - embed in audio file"
+  },
+  "lyricsModeEmbedSubtitle": "Встроить текст в метаданные FLAC",
+  "@lyricsModeEmbedSubtitle": {
+    "description": "Subtitle for embed option"
+  },
+  "lyricsModeExternal": "Внешний файл .lrc",
+  "@lyricsModeExternal": {
+    "description": "Lyrics mode option - separate LRC file"
+  },
+  "lyricsModeExternalSubtitle": "Отдельный файл .lrc для плееров, таких, как Samsung Music",
+  "@lyricsModeExternalSubtitle": {
+    "description": "Subtitle for external option"
+  },
+  "lyricsModeBoth": "Оба варианта",
+  "@lyricsModeBoth": {
+    "description": "Lyrics mode option - embed and external"
+  },
+  "lyricsModeBothSubtitle": "Вставить и сохранить файл .lrc",
+  "@lyricsModeBothSubtitle": {
+    "description": "Subtitle for both option"
+  },
   "sectionColor": "Цвет",
   "@sectionColor": {
     "description": "Settings section header"
@@ -1997,6 +2070,18 @@
   "@trackReleaseDate": {
     "description": "Metadata label - release date"
   },
+  "trackGenre": "Жанр",
+  "@trackGenre": {
+    "description": "Metadata label - music genre"
+  },
+  "trackLabel": "Заголовок",
+  "@trackLabel": {
+    "description": "Metadata label - record label"
+  },
+  "trackCopyright": "Авторские права",
+  "@trackCopyright": {
+    "description": "Metadata label - copyright information"
+  },
   "trackDownloaded": "Скачано",
   "@trackDownloaded": {
     "description": "Metadata label - download date"
@@ -2017,6 +2102,18 @@
   "@trackLyricsLoadFailed": {
     "description": "Message when lyrics loading fails"
   },
+  "trackEmbedLyrics": "Вставить текст песни",
+  "@trackEmbedLyrics": {
+    "description": "Action - embed lyrics into audio file"
+  },
+  "trackLyricsEmbedded": "Текст успешно добавлен",
+  "@trackLyricsEmbedded": {
+    "description": "Snackbar - lyrics saved to file"
+  },
+  "trackInstrumental": "Инструментальный трек",
+  "@trackInstrumental": {
+    "description": "Message when track is instrumental (no lyrics)"
+  },
   "trackCopiedToClipboard": "Скопировано в буфер обмена",
   "@trackCopiedToClipboard": {
     "description": "Snackbar - content copied"
@@ -2328,6 +2425,26 @@
   "@qualityHiResFlacMaxSubtitle": {
     "description": "Technical spec for hi-res max"
   },
+  "qualityMp3": "MP3",
+  "@qualityMp3": {
+    "description": "Quality option - MP3 lossy format"
+  },
+  "qualityMp3Subtitle": "320 кбит/с (Конвертировано из FLAC)",
+  "@qualityMp3Subtitle": {
+    "description": "Technical spec for MP3"
+  },
+  "enableMp3Option": "Скачивние в MP3",
+  "@enableMp3Option": {
+    "description": "Setting - enable MP3 quality option"
+  },
+  "enableMp3OptionSubtitleOn": "MP3 качество доступно",
+  "@enableMp3OptionSubtitleOn": {
+    "description": "Subtitle when MP3 is enabled"
+  },
+  "enableMp3OptionSubtitleOff": "Скачивать FLAC и конвертировать в MP3 320 кбит/с",
+  "@enableMp3OptionSubtitleOff": {
+    "description": "Subtitle when MP3 is disabled"
+  },
   "qualityNote": "Фактическое качество зависит от доступности треков в сервисе",
   "@qualityNote": {
     "description": "Note about quality availability"
@@ -2516,11 +2633,19 @@
   "@albumFolderYearAlbumSubtitle": {
     "description": "Folder structure example"
   },
+  "albumFolderArtistAlbumSingles": "Исполнитель / Альбом + Синглы",
+  "@albumFolderArtistAlbumSingles": {
+    "description": "Album folder option with singles inside artist"
+  },
+  "albumFolderArtistAlbumSinglesSubtitle": "Исполнитель/Альбом и Исполнитель/Сингл/",
+  "@albumFolderArtistAlbumSinglesSubtitle": {
+    "description": "Folder structure example"
+  },
   "downloadedAlbumDeleteSelected": "Удалить выбранные",
   "@downloadedAlbumDeleteSelected": {
     "description": "Button - delete selected tracks"
   },
-  "downloadedAlbumDeleteMessage": "Удалить {count} {count, plural, one {трек} few {трека} many {треков} other{треков}} из этого альбома?\n\nЭто также удалит файлы из хранилища.",
+  "downloadedAlbumDeleteMessage": "Удалить {count} {count, plural, one {трек} few {трека} many {треков} other {треков}} из этого альбома?\n\nЭто также удалит файлы из хранилища.",
   "@downloadedAlbumDeleteMessage": {
     "description": "Delete confirmation with count",
     "placeholders": {
@@ -2559,7 +2684,7 @@
   "@downloadedAlbumTapToSelect": {
     "description": "Selection hint"
   },
-  "downloadedAlbumDeleteCount": "Удалить {count} {count, plural, one {трек} few {трека} many {треков} other{треков}}",
+  "downloadedAlbumDeleteCount": "Удалить {count} {count, plural, one {трек} few {трека} many {треков} other {треков}}",
   "@downloadedAlbumDeleteCount": {
     "description": "Delete button text with count",
     "placeholders": {
@@ -2572,6 +2697,16 @@
   "@downloadedAlbumSelectToDelete": {
     "description": "Placeholder when nothing selected"
   },
+  "downloadedAlbumDiscHeader": "Диск {discNumber}",
+  "@downloadedAlbumDiscHeader": {
+    "description": "Header for disc separator in multi-disc albums",
+    "placeholders": {
+      "discNumber": {
+        "type": "int",
+        "example": "1"
+      }
+    }
+  },
   "utilityFunctions": "Функции утилиты",
   "@utilityFunctions": {
     "description": "Extension capability - utility functions"
@@ -2611,5 +2746,123 @@
         "description": "Error message"
       }
     }
+  },
+  "discographyDownload": "Скачать дискографию",
+  "@discographyDownload": {
+    "description": "Button - download artist discography"
+  },
+  "discographyDownloadAll": "Скачать всё",
+  "@discographyDownloadAll": {
+    "description": "Option - download entire discography"
+  },
+  "discographyDownloadAllSubtitle": "{count} треков из {albumCount} релизов",
+  "@discographyDownloadAllSubtitle": {
+    "description": "Subtitle showing total tracks and albums",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyAlbumsOnly": "Только альбомы",
+  "@discographyAlbumsOnly": {
+    "description": "Option - download only albums"
+  },
+  "discographyAlbumsOnlySubtitle": "{count} треков из {albumCount} альбомов",
+  "@discographyAlbumsOnlySubtitle": {
+    "description": "Subtitle showing album tracks count",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySinglesOnly": "Только синглы и EP",
+  "@discographySinglesOnly": {
+    "description": "Option - download only singles"
+  },
+  "discographySinglesOnlySubtitle": "{count} треков из {albumCount} синглов",
+  "@discographySinglesOnlySubtitle": {
+    "description": "Subtitle showing singles tracks count",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySelectAlbums": "Выбрать альбомы...",
+  "@discographySelectAlbums": {
+    "description": "Option - manually select albums to download"
+  },
+  "discographySelectAlbumsSubtitle": "Выберите конкретные альбомы или синглы",
+  "@discographySelectAlbumsSubtitle": {
+    "description": "Subtitle for select albums option"
+  },
+  "discographyFetchingTracks": "Получение треков...",
+  "@discographyFetchingTracks": {
+    "description": "Progress - fetching album tracks"
+  },
+  "discographyFetchingAlbum": "Получение {current} из {total}...",
+  "@discographyFetchingAlbum": {
+    "description": "Progress - fetching specific album",
+    "placeholders": {
+      "current": {
+        "type": "int"
+      },
+      "total": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySelectedCount": "{count} выбрано",
+  "@discographySelectedCount": {
+    "description": "Selection count badge",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyDownloadSelected": "Скачать выбранное",
+  "@discographyDownloadSelected": {
+    "description": "Button - download selected albums"
+  },
+  "discographyAddedToQueue": "Добавлено {count} треков в очередь",
+  "@discographyAddedToQueue": {
+    "description": "Snackbar - tracks added from discography",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySkippedDownloaded": "{added} добавлено, {skipped} уже скачано",
+  "@discographySkippedDownloaded": {
+    "description": "Snackbar - with skipped tracks count",
+    "placeholders": {
+      "added": {
+        "type": "int"
+      },
+      "skipped": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyNoAlbums": "Нет доступных альбомов",
+  "@discographyNoAlbums": {
+    "description": "Error - no albums found for artist"
+  },
+  "discographyFailedToFetch": "Не удалось получить некоторые альбомы",
+  "@discographyFailedToFetch": {
+    "description": "Error - some albums failed to load"
   }
 }

lib/l10n/arb/app_zh_CN.arb

@@ -127,6 +127,10 @@
   "@historyNoSinglesSubtitle": {
     "description": "Empty state subtitle for singles filter"
   },
+  "historySearchHint": "Search history...",
+  "@historySearchHint": {
+    "description": "Search bar placeholder in history"
+  },
   "settingsTitle": "Settings",
   "@settingsTitle": {
     "description": "Settings screen title"
@@ -512,6 +516,10 @@
   "@aboutLogoArtist": {
     "description": "Role description for logo artist"
   },
+  "aboutTranslators": "Translators",
+  "@aboutTranslators": {
+    "description": "Section for translators"
+  },
   "aboutSpecialThanks": "Special Thanks",
   "@aboutSpecialThanks": {
     "description": "Section for special thanks"
@@ -544,6 +552,26 @@
   "@aboutFeatureRequestSubtitle": {
     "description": "Subtitle for feature request"
   },
+  "aboutTelegramChannel": "Telegram Channel",
+  "@aboutTelegramChannel": {
+    "description": "Link to Telegram channel"
+  },
+  "aboutTelegramChannelSubtitle": "Announcements and updates",
+  "@aboutTelegramChannelSubtitle": {
+    "description": "Subtitle for Telegram channel"
+  },
+  "aboutTelegramChat": "Telegram Community",
+  "@aboutTelegramChat": {
+    "description": "Link to Telegram chat group"
+  },
+  "aboutTelegramChatSubtitle": "Chat with other users",
+  "@aboutTelegramChatSubtitle": {
+    "description": "Subtitle for Telegram chat"
+  },
+  "aboutSocial": "Social",
+  "@aboutSocial": {
+    "description": "Section for social links"
+  },
   "aboutSupport": "Support",
   "@aboutSupport": {
     "description": "Section for support/donation links"
@@ -1122,6 +1150,15 @@
     "description": "Dialog title - import CSV playlist"
   },
   "dialogImportPlaylistMessage": "Found {count} tracks in CSV. Add them to download queue?",
+  "csvImportTracks": "{count} tracks from CSV",
+  "@csvImportTracks": {
+    "description": "Label shown in quality picker for CSV import",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
   "@dialogImportPlaylistMessage": {
     "description": "Dialog message - import playlist confirmation",
     "placeholders": {
@@ -1851,6 +1888,42 @@
   "@sectionFileSettings": {
     "description": "Settings section header"
   },
+  "sectionLyrics": "Lyrics",
+  "@sectionLyrics": {
+    "description": "Settings section header"
+  },
+  "lyricsMode": "Lyrics Mode",
+  "@lyricsMode": {
+    "description": "Setting - how to save lyrics"
+  },
+  "lyricsModeDescription": "Choose how lyrics are saved with your downloads",
+  "@lyricsModeDescription": {
+    "description": "Lyrics mode picker description"
+  },
+  "lyricsModeEmbed": "Embed in file",
+  "@lyricsModeEmbed": {
+    "description": "Lyrics mode option - embed in audio file"
+  },
+  "lyricsModeEmbedSubtitle": "Lyrics stored inside FLAC metadata",
+  "@lyricsModeEmbedSubtitle": {
+    "description": "Subtitle for embed option"
+  },
+  "lyricsModeExternal": "External .lrc file",
+  "@lyricsModeExternal": {
+    "description": "Lyrics mode option - separate LRC file"
+  },
+  "lyricsModeExternalSubtitle": "Separate .lrc file for players like Samsung Music",
+  "@lyricsModeExternalSubtitle": {
+    "description": "Subtitle for external option"
+  },
+  "lyricsModeBoth": "Both",
+  "@lyricsModeBoth": {
+    "description": "Lyrics mode option - embed and external"
+  },
+  "lyricsModeBothSubtitle": "Embed and save .lrc file",
+  "@lyricsModeBothSubtitle": {
+    "description": "Subtitle for both option"
+  },
   "sectionColor": "Color",
   "@sectionColor": {
     "description": "Settings section header"
@@ -1997,6 +2070,18 @@
   "@trackReleaseDate": {
     "description": "Metadata label - release date"
   },
+  "trackGenre": "Genre",
+  "@trackGenre": {
+    "description": "Metadata label - music genre"
+  },
+  "trackLabel": "Label",
+  "@trackLabel": {
+    "description": "Metadata label - record label"
+  },
+  "trackCopyright": "Copyright",
+  "@trackCopyright": {
+    "description": "Metadata label - copyright information"
+  },
   "trackDownloaded": "Downloaded",
   "@trackDownloaded": {
     "description": "Metadata label - download date"
@@ -2017,6 +2102,18 @@
   "@trackLyricsLoadFailed": {
     "description": "Message when lyrics loading fails"
   },
+  "trackEmbedLyrics": "Embed Lyrics",
+  "@trackEmbedLyrics": {
+    "description": "Action - embed lyrics into audio file"
+  },
+  "trackLyricsEmbedded": "Lyrics embedded successfully",
+  "@trackLyricsEmbedded": {
+    "description": "Snackbar - lyrics saved to file"
+  },
+  "trackInstrumental": "Instrumental track",
+  "@trackInstrumental": {
+    "description": "Message when track is instrumental (no lyrics)"
+  },
   "trackCopiedToClipboard": "Copied to clipboard",
   "@trackCopiedToClipboard": {
     "description": "Snackbar - content copied"
@@ -2328,6 +2425,26 @@
   "@qualityHiResFlacMaxSubtitle": {
     "description": "Technical spec for hi-res max"
   },
+  "qualityMp3": "MP3",
+  "@qualityMp3": {
+    "description": "Quality option - MP3 lossy format"
+  },
+  "qualityMp3Subtitle": "320kbps (converted from FLAC)",
+  "@qualityMp3Subtitle": {
+    "description": "Technical spec for MP3"
+  },
+  "enableMp3Option": "Enable MP3 Option",
+  "@enableMp3Option": {
+    "description": "Setting - enable MP3 quality option"
+  },
+  "enableMp3OptionSubtitleOn": "MP3 quality option is available",
+  "@enableMp3OptionSubtitleOn": {
+    "description": "Subtitle when MP3 is enabled"
+  },
+  "enableMp3OptionSubtitleOff": "Downloads FLAC then converts to 320kbps MP3",
+  "@enableMp3OptionSubtitleOff": {
+    "description": "Subtitle when MP3 is disabled"
+  },
   "qualityNote": "Actual quality depends on track availability from the service",
   "@qualityNote": {
     "description": "Note about quality availability"
@@ -2516,6 +2633,14 @@
   "@albumFolderYearAlbumSubtitle": {
     "description": "Folder structure example"
   },
+  "albumFolderArtistAlbumSingles": "Artist / Album + Singles",
+  "@albumFolderArtistAlbumSingles": {
+    "description": "Album folder option with singles inside artist"
+  },
+  "albumFolderArtistAlbumSinglesSubtitle": "Artist/Album/ and Artist/Singles/",
+  "@albumFolderArtistAlbumSinglesSubtitle": {
+    "description": "Folder structure example"
+  },
   "downloadedAlbumDeleteSelected": "Delete Selected",
   "@downloadedAlbumDeleteSelected": {
     "description": "Button - delete selected tracks"
@@ -2572,6 +2697,16 @@
   "@downloadedAlbumSelectToDelete": {
     "description": "Placeholder when nothing selected"
   },
+  "downloadedAlbumDiscHeader": "Disc {discNumber}",
+  "@downloadedAlbumDiscHeader": {
+    "description": "Header for disc separator in multi-disc albums",
+    "placeholders": {
+      "discNumber": {
+        "type": "int",
+        "example": "1"
+      }
+    }
+  },
   "utilityFunctions": "Utility Functions",
   "@utilityFunctions": {
     "description": "Extension capability - utility functions"
@@ -2611,5 +2746,123 @@
         "description": "Error message"
       }
     }
+  },
+  "discographyDownload": "Download Discography",
+  "@discographyDownload": {
+    "description": "Button - download artist discography"
+  },
+  "discographyDownloadAll": "Download All",
+  "@discographyDownloadAll": {
+    "description": "Option - download entire discography"
+  },
+  "discographyDownloadAllSubtitle": "{count} tracks from {albumCount} releases",
+  "@discographyDownloadAllSubtitle": {
+    "description": "Subtitle showing total tracks and albums",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyAlbumsOnly": "Albums Only",
+  "@discographyAlbumsOnly": {
+    "description": "Option - download only albums"
+  },
+  "discographyAlbumsOnlySubtitle": "{count} tracks from {albumCount} albums",
+  "@discographyAlbumsOnlySubtitle": {
+    "description": "Subtitle showing album tracks count",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySinglesOnly": "Singles & EPs Only",
+  "@discographySinglesOnly": {
+    "description": "Option - download only singles"
+  },
+  "discographySinglesOnlySubtitle": "{count} tracks from {albumCount} singles",
+  "@discographySinglesOnlySubtitle": {
+    "description": "Subtitle showing singles tracks count",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySelectAlbums": "Select Albums...",
+  "@discographySelectAlbums": {
+    "description": "Option - manually select albums to download"
+  },
+  "discographySelectAlbumsSubtitle": "Choose specific albums or singles",
+  "@discographySelectAlbumsSubtitle": {
+    "description": "Subtitle for select albums option"
+  },
+  "discographyFetchingTracks": "Fetching tracks...",
+  "@discographyFetchingTracks": {
+    "description": "Progress - fetching album tracks"
+  },
+  "discographyFetchingAlbum": "Fetching {current} of {total}...",
+  "@discographyFetchingAlbum": {
+    "description": "Progress - fetching specific album",
+    "placeholders": {
+      "current": {
+        "type": "int"
+      },
+      "total": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySelectedCount": "{count} selected",
+  "@discographySelectedCount": {
+    "description": "Selection count badge",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyDownloadSelected": "Download Selected",
+  "@discographyDownloadSelected": {
+    "description": "Button - download selected albums"
+  },
+  "discographyAddedToQueue": "Added {count} tracks to queue",
+  "@discographyAddedToQueue": {
+    "description": "Snackbar - tracks added from discography",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySkippedDownloaded": "{added} added, {skipped} already downloaded",
+  "@discographySkippedDownloaded": {
+    "description": "Snackbar - with skipped tracks count",
+    "placeholders": {
+      "added": {
+        "type": "int"
+      },
+      "skipped": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyNoAlbums": "No albums available",
+  "@discographyNoAlbums": {
+    "description": "Error - no albums found for artist"
+  },
+  "discographyFailedToFetch": "Failed to fetch some albums",
+  "@discographyFailedToFetch": {
+    "description": "Error - some albums failed to load"
   }
 }

lib/l10n/arb/app_zh_TW.arb

@@ -127,6 +127,10 @@
   "@historyNoSinglesSubtitle": {
     "description": "Empty state subtitle for singles filter"
   },
+  "historySearchHint": "Search history...",
+  "@historySearchHint": {
+    "description": "Search bar placeholder in history"
+  },
   "settingsTitle": "Settings",
   "@settingsTitle": {
     "description": "Settings screen title"
@@ -512,6 +516,10 @@
   "@aboutLogoArtist": {
     "description": "Role description for logo artist"
   },
+  "aboutTranslators": "Translators",
+  "@aboutTranslators": {
+    "description": "Section for translators"
+  },
   "aboutSpecialThanks": "Special Thanks",
   "@aboutSpecialThanks": {
     "description": "Section for special thanks"
@@ -544,6 +552,26 @@
   "@aboutFeatureRequestSubtitle": {
     "description": "Subtitle for feature request"
   },
+  "aboutTelegramChannel": "Telegram Channel",
+  "@aboutTelegramChannel": {
+    "description": "Link to Telegram channel"
+  },
+  "aboutTelegramChannelSubtitle": "Announcements and updates",
+  "@aboutTelegramChannelSubtitle": {
+    "description": "Subtitle for Telegram channel"
+  },
+  "aboutTelegramChat": "Telegram Community",
+  "@aboutTelegramChat": {
+    "description": "Link to Telegram chat group"
+  },
+  "aboutTelegramChatSubtitle": "Chat with other users",
+  "@aboutTelegramChatSubtitle": {
+    "description": "Subtitle for Telegram chat"
+  },
+  "aboutSocial": "Social",
+  "@aboutSocial": {
+    "description": "Section for social links"
+  },
   "aboutSupport": "Support",
   "@aboutSupport": {
     "description": "Section for support/donation links"
@@ -1122,6 +1150,15 @@
     "description": "Dialog title - import CSV playlist"
   },
   "dialogImportPlaylistMessage": "Found {count} tracks in CSV. Add them to download queue?",
+  "csvImportTracks": "{count} tracks from CSV",
+  "@csvImportTracks": {
+    "description": "Label shown in quality picker for CSV import",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
   "@dialogImportPlaylistMessage": {
     "description": "Dialog message - import playlist confirmation",
     "placeholders": {
@@ -1851,6 +1888,42 @@
   "@sectionFileSettings": {
     "description": "Settings section header"
   },
+  "sectionLyrics": "Lyrics",
+  "@sectionLyrics": {
+    "description": "Settings section header"
+  },
+  "lyricsMode": "Lyrics Mode",
+  "@lyricsMode": {
+    "description": "Setting - how to save lyrics"
+  },
+  "lyricsModeDescription": "Choose how lyrics are saved with your downloads",
+  "@lyricsModeDescription": {
+    "description": "Lyrics mode picker description"
+  },
+  "lyricsModeEmbed": "Embed in file",
+  "@lyricsModeEmbed": {
+    "description": "Lyrics mode option - embed in audio file"
+  },
+  "lyricsModeEmbedSubtitle": "Lyrics stored inside FLAC metadata",
+  "@lyricsModeEmbedSubtitle": {
+    "description": "Subtitle for embed option"
+  },
+  "lyricsModeExternal": "External .lrc file",
+  "@lyricsModeExternal": {
+    "description": "Lyrics mode option - separate LRC file"
+  },
+  "lyricsModeExternalSubtitle": "Separate .lrc file for players like Samsung Music",
+  "@lyricsModeExternalSubtitle": {
+    "description": "Subtitle for external option"
+  },
+  "lyricsModeBoth": "Both",
+  "@lyricsModeBoth": {
+    "description": "Lyrics mode option - embed and external"
+  },
+  "lyricsModeBothSubtitle": "Embed and save .lrc file",
+  "@lyricsModeBothSubtitle": {
+    "description": "Subtitle for both option"
+  },
   "sectionColor": "Color",
   "@sectionColor": {
     "description": "Settings section header"
@@ -1997,6 +2070,18 @@
   "@trackReleaseDate": {
     "description": "Metadata label - release date"
   },
+  "trackGenre": "Genre",
+  "@trackGenre": {
+    "description": "Metadata label - music genre"
+  },
+  "trackLabel": "Label",
+  "@trackLabel": {
+    "description": "Metadata label - record label"
+  },
+  "trackCopyright": "Copyright",
+  "@trackCopyright": {
+    "description": "Metadata label - copyright information"
+  },
   "trackDownloaded": "Downloaded",
   "@trackDownloaded": {
     "description": "Metadata label - download date"
@@ -2017,6 +2102,18 @@
   "@trackLyricsLoadFailed": {
     "description": "Message when lyrics loading fails"
   },
+  "trackEmbedLyrics": "Embed Lyrics",
+  "@trackEmbedLyrics": {
+    "description": "Action - embed lyrics into audio file"
+  },
+  "trackLyricsEmbedded": "Lyrics embedded successfully",
+  "@trackLyricsEmbedded": {
+    "description": "Snackbar - lyrics saved to file"
+  },
+  "trackInstrumental": "Instrumental track",
+  "@trackInstrumental": {
+    "description": "Message when track is instrumental (no lyrics)"
+  },
   "trackCopiedToClipboard": "Copied to clipboard",
   "@trackCopiedToClipboard": {
     "description": "Snackbar - content copied"
@@ -2328,6 +2425,26 @@
   "@qualityHiResFlacMaxSubtitle": {
     "description": "Technical spec for hi-res max"
   },
+  "qualityMp3": "MP3",
+  "@qualityMp3": {
+    "description": "Quality option - MP3 lossy format"
+  },
+  "qualityMp3Subtitle": "320kbps (converted from FLAC)",
+  "@qualityMp3Subtitle": {
+    "description": "Technical spec for MP3"
+  },
+  "enableMp3Option": "Enable MP3 Option",
+  "@enableMp3Option": {
+    "description": "Setting - enable MP3 quality option"
+  },
+  "enableMp3OptionSubtitleOn": "MP3 quality option is available",
+  "@enableMp3OptionSubtitleOn": {
+    "description": "Subtitle when MP3 is enabled"
+  },
+  "enableMp3OptionSubtitleOff": "Downloads FLAC then converts to 320kbps MP3",
+  "@enableMp3OptionSubtitleOff": {
+    "description": "Subtitle when MP3 is disabled"
+  },
   "qualityNote": "Actual quality depends on track availability from the service",
   "@qualityNote": {
     "description": "Note about quality availability"
@@ -2516,6 +2633,14 @@
   "@albumFolderYearAlbumSubtitle": {
     "description": "Folder structure example"
   },
+  "albumFolderArtistAlbumSingles": "Artist / Album + Singles",
+  "@albumFolderArtistAlbumSingles": {
+    "description": "Album folder option with singles inside artist"
+  },
+  "albumFolderArtistAlbumSinglesSubtitle": "Artist/Album/ and Artist/Singles/",
+  "@albumFolderArtistAlbumSinglesSubtitle": {
+    "description": "Folder structure example"
+  },
   "downloadedAlbumDeleteSelected": "Delete Selected",
   "@downloadedAlbumDeleteSelected": {
     "description": "Button - delete selected tracks"
@@ -2572,6 +2697,16 @@
   "@downloadedAlbumSelectToDelete": {
     "description": "Placeholder when nothing selected"
   },
+  "downloadedAlbumDiscHeader": "Disc {discNumber}",
+  "@downloadedAlbumDiscHeader": {
+    "description": "Header for disc separator in multi-disc albums",
+    "placeholders": {
+      "discNumber": {
+        "type": "int",
+        "example": "1"
+      }
+    }
+  },
   "utilityFunctions": "Utility Functions",
   "@utilityFunctions": {
     "description": "Extension capability - utility functions"
@@ -2611,5 +2746,123 @@
         "description": "Error message"
       }
     }
+  },
+  "discographyDownload": "Download Discography",
+  "@discographyDownload": {
+    "description": "Button - download artist discography"
+  },
+  "discographyDownloadAll": "Download All",
+  "@discographyDownloadAll": {
+    "description": "Option - download entire discography"
+  },
+  "discographyDownloadAllSubtitle": "{count} tracks from {albumCount} releases",
+  "@discographyDownloadAllSubtitle": {
+    "description": "Subtitle showing total tracks and albums",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyAlbumsOnly": "Albums Only",
+  "@discographyAlbumsOnly": {
+    "description": "Option - download only albums"
+  },
+  "discographyAlbumsOnlySubtitle": "{count} tracks from {albumCount} albums",
+  "@discographyAlbumsOnlySubtitle": {
+    "description": "Subtitle showing album tracks count",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySinglesOnly": "Singles & EPs Only",
+  "@discographySinglesOnly": {
+    "description": "Option - download only singles"
+  },
+  "discographySinglesOnlySubtitle": "{count} tracks from {albumCount} singles",
+  "@discographySinglesOnlySubtitle": {
+    "description": "Subtitle showing singles tracks count",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "albumCount": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySelectAlbums": "Select Albums...",
+  "@discographySelectAlbums": {
+    "description": "Option - manually select albums to download"
+  },
+  "discographySelectAlbumsSubtitle": "Choose specific albums or singles",
+  "@discographySelectAlbumsSubtitle": {
+    "description": "Subtitle for select albums option"
+  },
+  "discographyFetchingTracks": "Fetching tracks...",
+  "@discographyFetchingTracks": {
+    "description": "Progress - fetching album tracks"
+  },
+  "discographyFetchingAlbum": "Fetching {current} of {total}...",
+  "@discographyFetchingAlbum": {
+    "description": "Progress - fetching specific album",
+    "placeholders": {
+      "current": {
+        "type": "int"
+      },
+      "total": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySelectedCount": "{count} selected",
+  "@discographySelectedCount": {
+    "description": "Selection count badge",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyDownloadSelected": "Download Selected",
+  "@discographyDownloadSelected": {
+    "description": "Button - download selected albums"
+  },
+  "discographyAddedToQueue": "Added {count} tracks to queue",
+  "@discographyAddedToQueue": {
+    "description": "Snackbar - tracks added from discography",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "discographySkippedDownloaded": "{added} added, {skipped} already downloaded",
+  "@discographySkippedDownloaded": {
+    "description": "Snackbar - with skipped tracks count",
+    "placeholders": {
+      "added": {
+        "type": "int"
+      },
+      "skipped": {
+        "type": "int"
+      }
+    }
+  },
+  "discographyNoAlbums": "No albums available",
+  "@discographyNoAlbums": {
+    "description": "Error - no albums found for artist"
+  },
+  "discographyFailedToFetch": "Failed to fetch some albums",
+  "@discographyFailedToFetch": {
+    "description": "Error - some albums failed to load"
   }
 }

lib/l10n/supported_locales.dart

@@ -18,6 +18,8 @@ const List<Locale> filteredSupportedLocales = <Locale>[
   Locale('es', 'ES'),
   Locale('id'),
   Locale('pt', 'PT'),
+  Locale('ja'),
+  Locale('tr'),
 ];
 
 /// Set of locale codes for quick lookup.
@@ -27,4 +29,6 @@ const Set<String> filteredLocaleCodes = <String>{
   'es_ES',
   'id',
   'pt_PT',
+  'ja',
+  'tr',
 };

lib/main.dart

@@ -43,6 +43,7 @@ class _EagerInitializationState extends ConsumerState<_EagerInitialization> {
   void initState() {
     super.initState();
     _initializeExtensions();
+    ref.read(downloadHistoryProvider);
   }
 
   Future<void> _initializeExtensions() async {
@@ -62,7 +63,6 @@ class _EagerInitializationState extends ConsumerState<_EagerInitialization> {
 
   @override
   Widget build(BuildContext context) {
-    ref.watch(downloadHistoryProvider);
     return widget.child;
   }
 }

lib/models/settings.dart

@@ -31,8 +31,16 @@ class AppSettings {
   final String albumFolderStructure;
   final bool showExtensionStore;
   final String locale;
-  final bool enableMp3Option;
   final String lyricsMode;
+  final String tidalHighFormat; // Format for Tidal HIGH quality: 'mp3_320' or 'opus_128'
+  final bool useAllFilesAccess; // Android 13+ only: enable MANAGE_EXTERNAL_STORAGE
+  final bool autoExportFailedDownloads; // Auto export failed downloads to TXT file
+  final String downloadNetworkMode; // 'any' = WiFi + Mobile, 'wifi_only' = WiFi only
+  
+  // Local Library Settings
+  final bool localLibraryEnabled; // Enable local library scanning
+  final String localLibraryPath; // Path to scan for audio files
+  final bool localLibraryShowDuplicates; // Show indicator when searching for existing tracks
 
   const AppSettings({
     this.defaultService = 'tidal',
@@ -62,8 +70,15 @@ class AppSettings {
     this.albumFolderStructure = 'artist_album',
     this.showExtensionStore = true,
     this.locale = 'system',
-    this.enableMp3Option = false,
     this.lyricsMode = 'embed',
+    this.tidalHighFormat = 'mp3_320',
+    this.useAllFilesAccess = false,
+    this.autoExportFailedDownloads = false,
+    this.downloadNetworkMode = 'any',
+    // Local Library defaults
+    this.localLibraryEnabled = false,
+    this.localLibraryPath = '',
+    this.localLibraryShowDuplicates = true,
   });
 
   AppSettings copyWith({
@@ -95,8 +110,15 @@ class AppSettings {
     String? albumFolderStructure,
     bool? showExtensionStore,
     String? locale,
-    bool? enableMp3Option,
     String? lyricsMode,
+    String? tidalHighFormat,
+    bool? useAllFilesAccess,
+    bool? autoExportFailedDownloads,
+    String? downloadNetworkMode,
+    // Local Library
+    bool? localLibraryEnabled,
+    String? localLibraryPath,
+    bool? localLibraryShowDuplicates,
   }) {
     return AppSettings(
       defaultService: defaultService ?? this.defaultService,
@@ -126,8 +148,15 @@ class AppSettings {
       albumFolderStructure: albumFolderStructure ?? this.albumFolderStructure,
       showExtensionStore: showExtensionStore ?? this.showExtensionStore,
       locale: locale ?? this.locale,
-      enableMp3Option: enableMp3Option ?? this.enableMp3Option,
       lyricsMode: lyricsMode ?? this.lyricsMode,
+      tidalHighFormat: tidalHighFormat ?? this.tidalHighFormat,
+      useAllFilesAccess: useAllFilesAccess ?? this.useAllFilesAccess,
+      autoExportFailedDownloads: autoExportFailedDownloads ?? this.autoExportFailedDownloads,
+      downloadNetworkMode: downloadNetworkMode ?? this.downloadNetworkMode,
+      // Local Library
+      localLibraryEnabled: localLibraryEnabled ?? this.localLibraryEnabled,
+      localLibraryPath: localLibraryPath ?? this.localLibraryPath,
+      localLibraryShowDuplicates: localLibraryShowDuplicates ?? this.localLibraryShowDuplicates,
     );
   }
 

lib/models/settings.g.dart

@@ -36,8 +36,16 @@ AppSettings _$AppSettingsFromJson(Map<String, dynamic> json) => AppSettings(
       json['albumFolderStructure'] as String? ?? 'artist_album',
   showExtensionStore: json['showExtensionStore'] as bool? ?? true,
   locale: json['locale'] as String? ?? 'system',
-  enableMp3Option: json['enableMp3Option'] as bool? ?? false,
   lyricsMode: json['lyricsMode'] as String? ?? 'embed',
+  tidalHighFormat: json['tidalHighFormat'] as String? ?? 'mp3_320',
+  useAllFilesAccess: json['useAllFilesAccess'] as bool? ?? false,
+  autoExportFailedDownloads:
+      json['autoExportFailedDownloads'] as bool? ?? false,
+  downloadNetworkMode: json['downloadNetworkMode'] as String? ?? 'any',
+  localLibraryEnabled: json['localLibraryEnabled'] as bool? ?? false,
+  localLibraryPath: json['localLibraryPath'] as String? ?? '',
+  localLibraryShowDuplicates:
+      json['localLibraryShowDuplicates'] as bool? ?? true,
 );
 
 Map<String, dynamic> _$AppSettingsToJson(AppSettings instance) =>
@@ -69,6 +77,12 @@ Map<String, dynamic> _$AppSettingsToJson(AppSettings instance) =>
       'albumFolderStructure': instance.albumFolderStructure,
       'showExtensionStore': instance.showExtensionStore,
       'locale': instance.locale,
-      'enableMp3Option': instance.enableMp3Option,
       'lyricsMode': instance.lyricsMode,
+      'tidalHighFormat': instance.tidalHighFormat,
+      'useAllFilesAccess': instance.useAllFilesAccess,
+      'autoExportFailedDownloads': instance.autoExportFailedDownloads,
+      'downloadNetworkMode': instance.downloadNetworkMode,
+      'localLibraryEnabled': instance.localLibraryEnabled,
+      'localLibraryPath': instance.localLibraryPath,
+      'localLibraryShowDuplicates': instance.localLibraryShowDuplicates,
     };

lib/providers/download_queue_provider.dart

@@ -5,6 +5,7 @@ import 'dart:io';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:shared_preferences/shared_preferences.dart';
+import 'package:connectivity_plus/connectivity_plus.dart';
 import 'package:spotiflac_android/models/download_item.dart';
 import 'package:spotiflac_android/models/settings.dart';
 import 'package:spotiflac_android/models/track.dart';
@@ -150,15 +151,12 @@ class DownloadHistoryState {
           .map((item) => MapEntry(item.isrc!, item)),
       );
 
-  /// O(1) check if spotify_id exists
   bool isDownloaded(String spotifyId) =>
       _downloadedSpotifyIds.contains(spotifyId);
-  
-  /// O(1) lookup by spotify_id
+
   DownloadHistoryItem? getBySpotifyId(String spotifyId) =>
       _bySpotifyId[spotifyId];
-  
-  /// O(1) lookup by ISRC
+
   DownloadHistoryItem? getByIsrc(String isrc) =>
       _byIsrc[isrc];
 
@@ -177,12 +175,11 @@ class DownloadHistoryNotifier extends Notifier<DownloadHistoryState> {
     return DownloadHistoryState();
   }
 
-  /// Synchronously schedule load - ensures it runs before any UI renders
   void _loadFromDatabaseSync() {
     if (_isLoaded) return;
+    _isLoaded = true;
     Future.microtask(() async {
       await _loadFromDatabase();
-      _isLoaded = true;
     });
   }
 
@@ -193,6 +190,13 @@ class DownloadHistoryNotifier extends Notifier<DownloadHistoryState> {
         _historyLog.i('Migrated history from SharedPreferences to SQLite');
       }
       
+      if (Platform.isIOS) {
+        final pathsMigrated = await _db.migrateIosContainerPaths();
+        if (pathsMigrated) {
+          _historyLog.i('Migrated iOS container paths after app update');
+        }
+      }
+      
       final jsonList = await _db.getAll();
       final items = jsonList
           .map((e) => DownloadHistoryItem.fromJson(e))
@@ -256,12 +260,10 @@ class DownloadHistoryNotifier extends Notifier<DownloadHistoryState> {
     return state.getBySpotifyId(spotifyId);
   }
   
-  /// O(1) lookup by ISRC
   DownloadHistoryItem? getByIsrc(String isrc) {
     return state.getByIsrc(isrc);
   }
   
-  /// Async version with database lookup (for cases where in-memory might be stale)
   Future<DownloadHistoryItem?> getBySpotifyIdAsync(String spotifyId) async {
     final inMemory = state.getBySpotifyId(spotifyId);
     if (inMemory != null) return inMemory;
@@ -278,7 +280,6 @@ class DownloadHistoryNotifier extends Notifier<DownloadHistoryState> {
     });
   }
   
-  /// Get database stats for debugging
   Future<int> getDatabaseCount() async {
     return await _db.getCount();
   }
@@ -467,10 +468,21 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
         final currentItems = state.items;
         final itemsById = <String, DownloadItem>{};
         final itemIndexById = <String, int>{};
+        int queuedCount = 0;
+        int downloadingCount = 0;
+        DownloadItem? firstDownloading;
         for (int i = 0; i < currentItems.length; i++) {
           final item = currentItems[i];
           itemsById[item.id] = item;
           itemIndexById[item.id] = i;
+          if (item.status == DownloadStatus.downloading) {
+            downloadingCount++;
+            firstDownloading ??= item;
+          }
+          if (item.status == DownloadStatus.queued ||
+              item.status == DownloadStatus.downloading) {
+            queuedCount++;
+          }
         }
         final progressUpdates = <String, _ProgressUpdate>{};
 
@@ -592,15 +604,12 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
           final bytesReceived = firstProgress['bytes_received'] as int? ?? 0;
           final bytesTotal = firstProgress['bytes_total'] as int? ?? 0;
 
-          final downloadingItems = state.items
-              .where((i) => i.status == DownloadStatus.downloading)
-              .toList();
-          if (downloadingItems.isNotEmpty) {
-            final trackName = downloadingItems.length == 1
-                ? downloadingItems.first.track.name
-                : '${downloadingItems.length} downloads';
-            final artistName = downloadingItems.length == 1
-                ? downloadingItems.first.track.artistName
+          if (downloadingCount > 0 && firstDownloading != null) {
+            final trackName = downloadingCount == 1
+                ? firstDownloading.track.name
+                : '$downloadingCount downloads';
+            final artistName = downloadingCount == 1
+                ? firstDownloading.track.artistName
                 : 'Downloading...';
 
             int notifProgress = bytesReceived;
@@ -622,11 +631,11 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
 
             if (Platform.isAndroid) {
               PlatformBridge.updateDownloadServiceProgress(
-                trackName: downloadingItems.first.track.name,
-                artistName: downloadingItems.first.track.artistName,
+                trackName: firstDownloading.track.name,
+                artistName: firstDownloading.track.artistName,
                 progress: notifProgress,
                 total: notifTotal > 0 ? notifTotal : 1,
-                queueCount: state.queuedCount,
+                queueCount: queuedCount,
               ).catchError((_) {});
             }
           }
@@ -704,6 +713,20 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
 
     if (separateSingles) {
       final isSingle = track.isSingle;
+      final artistName = _sanitizeFolderName(albumArtist);
+      
+      if (albumFolderStructure == 'artist_album_singles') {
+        if (isSingle) {
+          final singlesPath = '$baseDir${Platform.pathSeparator}$artistName${Platform.pathSeparator}Singles';
+          await _ensureDirExists(singlesPath, label: 'Artist Singles folder');
+          return singlesPath;
+        } else {
+          final albumName = _sanitizeFolderName(track.albumName);
+          final albumPath = '$baseDir${Platform.pathSeparator}$artistName${Platform.pathSeparator}$albumName';
+          await _ensureDirExists(albumPath, label: 'Artist Album folder');
+          return albumPath;
+        }
+      }
       
       if (isSingle) {
         final singlesPath = '$baseDir${Platform.pathSeparator}Singles';
@@ -711,7 +734,6 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
         return singlesPath;
       } else {
         final albumName = _sanitizeFolderName(track.albumName);
-        final artistName = _sanitizeFolderName(albumArtist);
         final year = _extractYear(track.releaseDate);
         String albumPath;
         
@@ -773,7 +795,6 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
         .trim();
   }
 
-  /// Extract year from release date (format: "2005-06-13" or "2005")
   String? _extractYear(String? releaseDate) {
     if (releaseDate == null || releaseDate.isEmpty) return null;
     final match = _yearRegex.firstMatch(releaseDate);
@@ -992,12 +1013,89 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
     }
   }
 
-  void removeItem(String id) {
+void removeItem(String id) {
     final items = state.items.where((item) => item.id != id).toList();
     state = state.copyWith(items: items);
     _saveQueueToStorage();
   }
 
+  Future<String?> exportFailedDownloads() async {
+    final failedItems = state.items
+        .where((item) => item.status == DownloadStatus.failed)
+        .toList();
+
+    if (failedItems.isEmpty) {
+      _log.d('No failed downloads to export');
+      return null;
+    }
+
+    try {
+      String baseDir = state.outputDir;
+      if (baseDir.isEmpty) {
+        final dir = await getApplicationDocumentsDirectory();
+        baseDir = dir.path;
+      }
+
+      final failedDownloadsDir = '$baseDir/failed_downloads';
+      final failedDir = Directory(failedDownloadsDir);
+      if (!await failedDir.exists()) {
+        await failedDir.create(recursive: true);
+      }
+
+      // Use date-only format for daily grouping (YYYY-MM-DD)
+      final now = DateTime.now();
+      final dateStr = '${now.year}-${now.month.toString().padLeft(2, '0')}-${now.day.toString().padLeft(2, '0')}';
+      final fileName = 'failed_downloads_$dateStr.txt';
+      final filePath = '$failedDownloadsDir/$fileName';
+
+      final file = File(filePath);
+      final bool fileExists = await file.exists();
+
+      final buffer = StringBuffer();
+      
+      if (!fileExists) {
+        buffer.writeln('# SpotiFLAC Failed Downloads');
+        buffer.writeln('# Date: $dateStr');
+        buffer.writeln('#');
+        buffer.writeln('# Format: [Time] Track - Artist | URL | Error');
+        buffer.writeln('');
+      }
+
+      final timeStr = '${now.hour.toString().padLeft(2, '0')}:${now.minute.toString().padLeft(2, '0')}:${now.second.toString().padLeft(2, '0')}';
+      
+      for (final item in failedItems) {
+        final track = item.track;
+        final spotifyUrl = track.id.startsWith('deezer:')
+            ? 'https://www.deezer.com/track/${track.id.substring(7)}'
+            : 'https://open.spotify.com/track/${track.id}';
+        final error = item.error ?? 'Unknown error';
+        buffer.writeln('[$timeStr] ${track.name} - ${track.artistName} | $spotifyUrl | $error');
+      }
+
+      if (fileExists) {
+        await file.writeAsString(buffer.toString(), mode: FileMode.append);
+        _log.i('Appended ${failedItems.length} failed downloads to: $filePath');
+      } else {
+        await file.writeAsString(buffer.toString());
+        _log.i('Created new failed downloads file: $filePath');
+      }
+
+      return filePath;
+    } catch (e) {
+      _log.e('Failed to export failed downloads: $e');
+      return null;
+    }
+  }
+
+  void clearFailedDownloads() {
+    final items = state.items
+        .where((item) => item.status != DownloadStatus.failed)
+        .toList();
+    state = state.copyWith(items: items);
+    _saveQueueToStorage();
+    _log.d('Cleared failed downloads from queue');
+  }
+
   Future<void> _runPostProcessingHooks(String filePath, Track track) async {
     try {
       final settings = ref.read(settingsProvider);
@@ -1044,7 +1142,6 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
     }
   }
 
-  /// Same logic as Go backend cover.go
   String _upgradeToMaxQualityCover(String coverUrl) {
     const spotifySize300 = 'ab67616d00001e02';
     const spotifySize640 = 'ab67616d0000b273';
@@ -1161,10 +1258,12 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
           durationMs: durationMs,
         );
 
-        if (lrcContent.isNotEmpty) {
+        if (lrcContent.isNotEmpty && lrcContent != '[instrumental:true]') {
           metadata['LYRICS'] = lrcContent;
           metadata['UNSYNCEDLYRICS'] = lrcContent;
           _log.d('Lyrics fetched for embedding (${lrcContent.length} chars)');
+        } else if (lrcContent == '[instrumental:true]') {
+          _log.d('Track is instrumental, skipping lyrics embedding');
         }
       } catch (e) {
         _log.w('Failed to fetch lyrics for embedding: $e');
@@ -1289,7 +1388,11 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
 
       _log.d('MP3 Metadata map content: $metadata');
 
-      if (settings.embedLyrics) {
+      final lyricsMode = settings.lyricsMode;
+      final shouldEmbed = lyricsMode == 'embed' || lyricsMode == 'both';
+      final shouldSaveExternal = lyricsMode == 'external' || lyricsMode == 'both';
+      
+      if (settings.embedLyrics && (shouldEmbed || shouldSaveExternal)) {
         try {
           final durationMs = track.duration * 1000;
           
@@ -1302,12 +1405,24 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
           );
 
           if (lrcContent.isNotEmpty) {
-            metadata['LYRICS'] = lrcContent;
-            metadata['UNSYNCEDLYRICS'] = lrcContent;
-            _log.d('Lyrics fetched for MP3 embedding (${lrcContent.length} chars)');
+            if (shouldEmbed) {
+              metadata['LYRICS'] = lrcContent;
+              metadata['UNSYNCEDLYRICS'] = lrcContent;
+              _log.d('Lyrics fetched for MP3 embedding (${lrcContent.length} chars)');
+            }
+            
+            if (shouldSaveExternal) {
+              try {
+                final lrcPath = mp3Path.replaceAll(RegExp(r'\.mp3$', caseSensitive: false), '.lrc');
+                await File(lrcPath).writeAsString(lrcContent);
+                _log.d('External LRC file saved: $lrcPath');
+              } catch (e) {
+                _log.w('Failed to save external LRC file: $e');
+              }
+            }
           }
         } catch (e) {
-          _log.w('Failed to fetch lyrics for MP3 embedding: $e');
+          _log.w('Failed to fetch lyrics for MP3: $e');
         }
       }
 
@@ -1342,9 +1457,174 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
     }
   }
 
-  Future<void> _processQueue() async {
+  Future<void> _embedMetadataToOpus(
+    String opusPath, 
+    Track track, {
+    String? genre,
+    String? label,
+    String? copyright,
+  }) async {
+    final settings = ref.read(settingsProvider);
+    
+    String? coverPath;
+    var coverUrl = track.coverUrl;
+    if (coverUrl != null && coverUrl.isNotEmpty) {
+      try {
+        if (settings.maxQualityCover) {
+          coverUrl = _upgradeToMaxQualityCover(coverUrl);
+          _log.d('Cover URL upgraded to max quality for Opus: $coverUrl');
+        }
+        
+        final tempDir = await getTemporaryDirectory();
+        final uniqueId =
+            '${DateTime.now().millisecondsSinceEpoch}_${Random().nextInt(10000)}';
+        coverPath = '${tempDir.path}/cover_opus_$uniqueId.jpg';
+
+        final httpClient = HttpClient();
+        final request = await httpClient.getUrl(Uri.parse(coverUrl));
+        final response = await request.close();
+        if (response.statusCode == 200) {
+          final file = File(coverPath);
+          final sink = file.openWrite();
+          await response.pipe(sink);
+          await sink.close();
+          _log.d('Cover downloaded for Opus: $coverPath');
+        } else {
+          _log.w('Failed to download cover for Opus: HTTP ${response.statusCode}');
+          coverPath = null;
+        }
+        httpClient.close();
+      } catch (e) {
+        _log.e('Failed to download cover for Opus: $e');
+        coverPath = null;
+      }
+    }
+
+    try {
+      final metadata = <String, String>{
+        'TITLE': track.name,
+        'ARTIST': track.artistName,
+        'ALBUM': track.albumName,
+      };
+
+      final albumArtist = _normalizeOptionalString(track.albumArtist) ??
+          track.artistName;
+      metadata['ALBUMARTIST'] = albumArtist;
+
+      if (track.trackNumber != null) {
+        metadata['TRACKNUMBER'] = track.trackNumber.toString();
+      }
+
+      if (track.discNumber != null) {
+        metadata['DISCNUMBER'] = track.discNumber.toString();
+      }
+
+      if (track.releaseDate != null) {
+        metadata['DATE'] = track.releaseDate!;
+      }
+
+      if (track.isrc != null) {
+        metadata['ISRC'] = track.isrc!;
+      }
+
+      if (genre != null && genre.isNotEmpty) {
+        metadata['GENRE'] = genre;
+        _log.d('Adding GENRE to Opus: $genre');
+      }
+      if (label != null && label.isNotEmpty) {
+        metadata['ORGANIZATION'] = label;
+        _log.d('Adding ORGANIZATION (label) to Opus: $label');
+      }
+      if (copyright != null && copyright.isNotEmpty) {
+        metadata['COPYRIGHT'] = copyright;
+        _log.d('Adding COPYRIGHT to Opus: $copyright');
+      }
+
+      _log.d('Opus Metadata map content: $metadata');
+
+      final lyricsMode = settings.lyricsMode;
+      final shouldEmbed = lyricsMode == 'embed' || lyricsMode == 'both';
+      final shouldSaveExternal = lyricsMode == 'external' || lyricsMode == 'both';
+      
+      if (settings.embedLyrics && (shouldEmbed || shouldSaveExternal)) {
+        try {
+          final durationMs = track.duration * 1000;
+          
+          final lrcContent = await PlatformBridge.getLyricsLRC(
+            track.id,
+            track.name,
+            track.artistName,
+            filePath: '',
+            durationMs: durationMs,
+          );
+
+          if (lrcContent.isNotEmpty) {
+            if (shouldEmbed) {
+              metadata['LYRICS'] = lrcContent;
+              _log.d('Lyrics fetched for Opus embedding (${lrcContent.length} chars)');
+            }
+            
+            if (shouldSaveExternal) {
+              try {
+                final lrcPath = opusPath.replaceAll(RegExp(r'\.opus$', caseSensitive: false), '.lrc');
+                await File(lrcPath).writeAsString(lrcContent);
+                _log.d('External LRC file saved: $lrcPath');
+              } catch (e) {
+                _log.w('Failed to save external LRC file: $e');
+              }
+            }
+          }
+        } catch (e) {
+          _log.w('Failed to fetch lyrics for Opus: $e');
+        }
+      }
+
+      _log.d('Embedding tags to Opus: $metadata');
+
+      final result = await FFmpegService.embedMetadataToOpus(
+        opusPath: opusPath,
+        coverPath: coverPath != null && await File(coverPath).exists()
+            ? coverPath
+            : null,
+        metadata: metadata,
+      );
+
+      if (result != null) {
+        _log.d('Metadata, lyrics, and cover embedded to Opus via FFmpeg');
+      } else {
+        _log.w('FFmpeg Opus metadata/cover embed failed');
+      }
+
+      if (coverPath != null) {
+        try {
+          final coverFile = File(coverPath);
+          if (await coverFile.exists()) {
+            await coverFile.delete();
+          }
+        } catch (e) {
+          _log.w('Failed to cleanup Opus cover file: $e');
+        }
+      }
+    } catch (e) {
+      _log.e('Failed to embed metadata to Opus: $e');
+    }
+  }
+
+Future<void> _processQueue() async {
     if (state.isProcessing) return;
 
+    // Check network connectivity before starting
+    final settings = ref.read(settingsProvider);
+    if (settings.downloadNetworkMode == 'wifi_only') {
+      final connectivityResult = await Connectivity().checkConnectivity();
+      final hasWifi = connectivityResult.contains(ConnectivityResult.wifi);
+      if (!hasWifi) {
+        _log.w('WiFi-only mode enabled but no WiFi connection. Queue paused.');
+        state = state.copyWith(isProcessing: false, isPaused: true);
+        return;
+      }
+    }
+
     state = state.copyWith(isProcessing: true);
     _log.i('Starting queue processing...');
 
@@ -1371,11 +1651,28 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
       }
     }
 
-    if (state.outputDir.isEmpty) {
+if (state.outputDir.isEmpty) {
       _log.d('Output dir empty, initializing...');
       await _initOutputDir();
     }
 
+    // iOS: Validate that outputDir is writable (not iCloud Drive which Go can't access)
+    if (Platform.isIOS && state.outputDir.isNotEmpty) {
+      final isICloudPath = state.outputDir.contains('Mobile Documents') ||
+          state.outputDir.contains('CloudDocs') ||
+          state.outputDir.contains('com~apple~CloudDocs');
+      if (isICloudPath) {
+        _log.w('iOS: iCloud Drive path detected, falling back to app Documents folder');
+        _log.w('Go backend cannot write to iCloud Drive due to iOS sandboxing');
+        final dir = await getApplicationDocumentsDirectory();
+        final musicDir = Directory('${dir.path}/SpotiFLAC');
+        if (!await musicDir.exists()) {
+          await musicDir.create(recursive: true);
+        }
+        state = state.copyWith(outputDir: musicDir.path);
+      }
+    }
+
     if (state.outputDir.isEmpty) {
       _log.d('Using fallback directory...');
       final dir = await getApplicationDocumentsDirectory();
@@ -1416,7 +1713,7 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
       _downloadCount = 0;
     }
 
-    _log.i(
+_log.i(
       'Queue stats - completed: $_completedInSession, failed: $_failedInSession, totalAtStart: $_totalQueuedAtStart',
     );
     if (_totalQueuedAtStart > 0) {
@@ -1424,6 +1721,15 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
         completedCount: _completedInSession,
         failedCount: _failedInSession,
       );
+
+      // Auto-export failed downloads if enabled
+      final settings = ref.read(settingsProvider);
+      if (settings.autoExportFailedDownloads && _failedInSession > 0) {
+        final exportPath = await exportFailedDownloads();
+        if (exportPath != null) {
+          _log.i('Auto-exported failed downloads to: $exportPath');
+        }
+      }
     }
 
     _log.i('Queue processing finished');
@@ -1634,7 +1940,6 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
 
       final quality = item.qualityOverride ?? state.audioQuality;
 
-// Fetch extended metadata (genre, label) from Deezer if available
       String? genre;
       String? label;
       
@@ -1686,7 +1991,7 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
           'Quality: $quality${item.qualityOverride != null ? ' (override)' : ''}',
         );
         _log.d('Output dir: $outputDir');
-        result = await PlatformBridge.downloadWithExtensions(
+result = await PlatformBridge.downloadWithExtensions(
           isrc: trackToDownload.isrc ?? '',
           spotifyId: trackToDownload.id,
           trackName: trackToDownload.name,
@@ -1706,6 +2011,7 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
           genre: genre,
           label: label,
           lyricsMode: settings.lyricsMode,
+          preferredService: item.service,
         );
       } else if (state.autoFallback) {
         _log.d('Using auto-fallback mode');
@@ -1781,10 +2087,10 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
       if (result['success'] == true) {
         var filePath = result['file_path'] as String?;
         
-        final wasExisting = filePath != null && filePath.startsWith('EXISTS:');
+        // Check if file already existed (detected via ISRC match in Go backend)
+        final wasExisting = result['already_exists'] == true;
         if (wasExisting) {
-          filePath = filePath.substring(7); // Remove "EXISTS:" prefix
-          _log.i('Using existing file: $filePath');
+          _log.i('File already exists in library: $filePath');
         }
         
         _log.i('Download success, file: $filePath');
@@ -1805,9 +2111,75 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
         }
 
         if (filePath != null && filePath.endsWith('.m4a')) {
-          _log.d(
-            'M4A file detected (Hi-Res DASH stream), attempting conversion to FLAC...',
-          );
+          // For HIGH quality (Tidal AAC 320kbps), convert to MP3 or Opus
+          if (quality == 'HIGH') {
+            final tidalHighFormat = settings.tidalHighFormat;
+            _log.i('Tidal HIGH quality download, converting M4A to $tidalHighFormat...');
+            
+            try {
+              updateItemStatus(
+                item.id,
+                DownloadStatus.downloading,
+                progress: 0.95,
+              );
+              
+              final format = tidalHighFormat.startsWith('opus') ? 'opus' : 'mp3';
+              final convertedPath = await FFmpegService.convertM4aToLossy(
+                filePath,
+                format: format,
+                bitrate: tidalHighFormat,
+                deleteOriginal: true,
+              );
+              
+              if (convertedPath != null) {
+                filePath = convertedPath;
+                final bitrateDisplay = tidalHighFormat.contains('_') 
+                    ? '${tidalHighFormat.split('_').last}kbps' 
+                    : '320kbps';
+                actualQuality = '${format.toUpperCase()} $bitrateDisplay';
+                _log.i('Successfully converted M4A to $format: $convertedPath');
+                
+                _log.i('Embedding metadata to $format...');
+                updateItemStatus(
+                  item.id,
+                  DownloadStatus.downloading,
+                  progress: 0.99,
+                );
+                
+                final backendGenre = result['genre'] as String?;
+                final backendLabel = result['label'] as String?;
+                final backendCopyright = result['copyright'] as String?;
+                
+                if (format == 'mp3') {
+                  await _embedMetadataToMp3(
+                    convertedPath, 
+                    trackToDownload,
+                    genre: backendGenre ?? genre,
+                    label: backendLabel ?? label,
+                    copyright: backendCopyright,
+                  );
+                } else {
+                  await _embedMetadataToOpus(
+                    convertedPath, 
+                    trackToDownload,
+                    genre: backendGenre ?? genre,
+                    label: backendLabel ?? label,
+                    copyright: backendCopyright,
+                  );
+                }
+                _log.d('Metadata embedded successfully');
+              } else {
+                _log.w('M4A to $format conversion failed, keeping M4A file');
+                actualQuality = 'AAC 320kbps';
+              }
+            } catch (e) {
+              _log.w('M4A conversion process failed: $e, keeping M4A file');
+              actualQuality = 'AAC 320kbps';
+            }
+          } else {
+            _log.d(
+              'M4A file detected (Hi-Res DASH stream), attempting conversion to FLAC...',
+            );
 
           try {
             final file = File(filePath);
@@ -1909,6 +2281,7 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
           } catch (e) {
             _log.w('FFmpeg conversion process failed: $e, keeping M4A file');
           }
+          }
         }
 
         final itemAfterDownload = state.items.firstWhere(
@@ -1931,56 +2304,6 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
           return;
         }
 
-        if (quality == 'MP3' && filePath != null && filePath.endsWith('.flac')) {
-          if (wasExisting) {
-            _log.i('MP3 requested but existing FLAC found - skipping conversion to preserve original file');
-          } else {
-            _log.i('MP3 quality selected, converting FLAC to MP3...');
-            updateItemStatus(
-              item.id,
-              DownloadStatus.downloading,
-              progress: 0.97,
-            );
-            
-            try {
-              final mp3Path = await FFmpegService.convertFlacToMp3(
-                filePath,
-                bitrate: '320k',
-                deleteOriginal: true,
-              );
-              
-              if (mp3Path != null) {
-                filePath = mp3Path;
-                actualQuality = 'MP3 320kbps';
-                _log.i('Successfully converted to MP3: $mp3Path');
-                
-                _log.i('Embedding metadata to MP3...');
-                updateItemStatus(
-                  item.id,
-                  DownloadStatus.downloading,
-                  progress: 0.99,
-                );
-                
-                final mp3BackendGenre = result['genre'] as String?;
-                final mp3BackendLabel = result['label'] as String?;
-                final mp3BackendCopyright = result['copyright'] as String?;
-                
-                await _embedMetadataToMp3(
-                  mp3Path, 
-                  trackToDownload,
-                  genre: mp3BackendGenre ?? genre,
-                  label: mp3BackendLabel ?? label,
-                  copyright: mp3BackendCopyright,
-                );
-              } else {
-                _log.w('MP3 conversion failed, keeping FLAC file');
-              }
-            } catch (e) {
-              _log.e('MP3 conversion error: $e, keeping FLAC file');
-            }
-          }
-        }
-
         updateItemStatus(
           item.id,
           DownloadStatus.completed,
@@ -1994,11 +2317,29 @@ class DownloadQueueNotifier extends Notifier<DownloadQueueState> {
 
         _completedInSession++;
         
+        final historyNotifier = ref.read(downloadHistoryProvider.notifier);
+        final existingInHistory = historyNotifier.getBySpotifyId(trackToDownload.id) ??
+            (trackToDownload.isrc != null ? historyNotifier.getByIsrc(trackToDownload.isrc!) : null);
+        
+        if (wasExisting && existingInHistory != null) {
+          _log.i('Track already in library, skipping history update');
+          await _notificationService.showDownloadComplete(
+            trackName: item.track.name,
+            artistName: item.track.artistName,
+            completedCount: _completedInSession,
+            totalCount: _totalQueuedAtStart,
+            alreadyInLibrary: true,
+          );
+          removeItem(item.id);
+          return;
+        }
+        
         await _notificationService.showDownloadComplete(
           trackName: item.track.name,
           artistName: item.track.artistName,
           completedCount: _completedInSession,
           totalCount: _totalQueuedAtStart,
+          alreadyInLibrary: wasExisting,
         );
 
         if (filePath != null) {

lib/providers/explore_provider.dart

@@ -5,7 +5,6 @@ import 'package:spotiflac_android/providers/extension_provider.dart';
 
 final _log = AppLogger('ExploreProvider');
 
-/// Represents an item in a Spotify home section
 class ExploreItem {
   final String id;
   final String uri;
@@ -50,31 +49,34 @@ class ExploreItem {
   }
 }
 
-/// Represents a section in Spotify home feed
 class ExploreSection {
   final String uri;
   final String title;
   final List<ExploreItem> items;
+  final bool isYTMusicQuickPicks;
 
   const ExploreSection({
     required this.uri,
     required this.title,
     required this.items,
+    this.isYTMusicQuickPicks = false,
   });
 
   factory ExploreSection.fromJson(Map<String, dynamic> json) {
     final itemsList = json['items'] as List<dynamic>? ?? [];
+    final items = itemsList
+        .map((item) => ExploreItem.fromJson(item as Map<String, dynamic>))
+        .toList();
+    final isQuickPicks = _isYTMusicQuickPicksItems(items);
     return ExploreSection(
       uri: json['uri'] as String? ?? '',
       title: json['title'] as String? ?? '',
-      items: itemsList
-          .map((item) => ExploreItem.fromJson(item as Map<String, dynamic>))
-          .toList(),
+      items: items,
+      isYTMusicQuickPicks: isQuickPicks,
     );
   }
 }
 
-/// State for explore/home feed
 class ExploreState {
   final bool isLoading;
   final String? error;
@@ -109,7 +111,30 @@ class ExploreState {
   }
 }
 
-/// Provider for explore/home feed state
+String _getLocalGreeting() {
+  final hour = DateTime.now().hour;
+  if (hour >= 5 && hour < 12) {
+    return 'Good morning';
+  } else if (hour >= 12 && hour < 17) {
+    return 'Good afternoon';
+  } else if (hour >= 17 && hour < 21) {
+    return 'Good evening';
+  } else {
+    return 'Good night';
+  }
+}
+
+bool _isYTMusicQuickPicksItems(List<ExploreItem> items) {
+  if (items.isEmpty) return false;
+  if (items.first.providerId != 'ytmusic-spotiflac') return false;
+  for (final item in items) {
+    if (item.type != 'track') {
+      return false;
+    }
+  }
+  return true;
+}
+
 class ExploreNotifier extends Notifier<ExploreState> {
   @override
   ExploreState build() {
@@ -120,7 +145,6 @@ class ExploreNotifier extends Notifier<ExploreState> {
   Future<void> fetchHomeFeed({bool forceRefresh = false}) async {
     _log.i('fetchHomeFeed called, forceRefresh=$forceRefresh');
     
-    // Don't refetch if we have data and it's less than 5 minutes old
     if (!forceRefresh && 
         state.hasContent && 
         state.lastFetched != null &&
@@ -137,11 +161,9 @@ class ExploreNotifier extends Notifier<ExploreState> {
     state = state.copyWith(isLoading: true, error: null);
 
     try {
-      // Find any extension with homeFeed capability
       final extState = ref.read(extensionProvider);
       _log.d('Extensions count: ${extState.extensions.length}');
       
-      // Look for extensions with homeFeed capability (prefer spotify-web)
       Extension? targetExt;
       for (final extension in extState.extensions) {
         if (!extension.enabled || !extension.hasHomeFeed) {
@@ -195,15 +217,17 @@ class ExploreNotifier extends Notifier<ExploreState> {
 
       _log.i('Fetched ${sections.length} sections');
       
-      // Debug: log first section items
       if (sections.isNotEmpty && sections.first.items.isNotEmpty) {
         final firstItem = sections.first.items.first;
         _log.d('First item: name=${firstItem.name}, artists=${firstItem.artists}, type=${firstItem.type}');
       }
 
+      final localGreeting = _getLocalGreeting();
+      _log.d('Greeting from extension: $greeting, using local: $localGreeting');
+
       state = ExploreState(
         isLoading: false,
-        greeting: greeting,
+        greeting: localGreeting,
         sections: sections,
         lastFetched: DateTime.now(),
       );
@@ -216,15 +240,14 @@ class ExploreNotifier extends Notifier<ExploreState> {
     }
   }
 
-  /// Clear cached data
   void clear() {
     state = const ExploreState();
   }
 
-  /// Refresh home feed
   Future<void> refresh() => fetchHomeFeed(forceRefresh: true);
 }
 
+
 final exploreProvider = NotifierProvider<ExploreNotifier, ExploreState>(() {
   return ExploreNotifier();
 });

lib/providers/extension_provider.dart

@@ -146,6 +146,26 @@ class Extension {
   bool get hasBrowseCategories => capabilities['browseCategories'] == true;
 }
 
+class SearchFilter {
+  final String id;
+  final String? label;
+  final String? icon;
+
+  const SearchFilter({
+    required this.id,
+    this.label,
+    this.icon,
+  });
+
+  factory SearchFilter.fromJson(Map<String, dynamic> json) {
+    return SearchFilter(
+      id: json['id'] as String? ?? '',
+      label: json['label'] as String?,
+      icon: json['icon'] as String?,
+    );
+  }
+}
+
 class SearchBehavior {
   final bool enabled;
   final String? placeholder;
@@ -154,6 +174,7 @@ class SearchBehavior {
   final String? thumbnailRatio; // "square" (1:1), "wide" (16:9), "portrait" (2:3)
   final int? thumbnailWidth;
   final int? thumbnailHeight;
+  final List<SearchFilter> filters; // Available search filters (e.g., track, album, artist, playlist)
 
   const SearchBehavior({
     required this.enabled,
@@ -163,6 +184,7 @@ class SearchBehavior {
     this.thumbnailRatio,
     this.thumbnailWidth,
     this.thumbnailHeight,
+    this.filters = const [],
   });
 
   factory SearchBehavior.fromJson(Map<String, dynamic> json) {
@@ -174,6 +196,9 @@ class SearchBehavior {
       thumbnailRatio: json['thumbnailRatio'] as String?,
       thumbnailWidth: json['thumbnailWidth'] as int?,
       thumbnailHeight: json['thumbnailHeight'] as int?,
+      filters: (json['filters'] as List<dynamic>?)
+          ?.map((f) => SearchFilter.fromJson(f as Map<String, dynamic>))
+          .toList() ?? [],
     );
   }
 
@@ -427,7 +452,6 @@ class ExtensionNotifier extends Notifier<ExtensionState> {
     return const ExtensionState();
   }
 
-  /// Initialize the extension system
   Future<void> initialize(String extensionsDir, String dataDir) async {
     if (state.isInitialized) return;
     
@@ -460,7 +484,6 @@ class ExtensionNotifier extends Notifier<ExtensionState> {
     }
   }
 
-  /// Refresh the list of installed extensions
   Future<void> refreshExtensions() async {
     try {
       final list = await PlatformBridge.getInstalledExtensions();
@@ -468,7 +491,6 @@ class ExtensionNotifier extends Notifier<ExtensionState> {
       state = state.copyWith(extensions: extensions);
       _log.d('Loaded ${extensions.length} extensions');
       
-      // Log search behavior for extensions that have it
       for (final ext in extensions) {
         if (ext.searchBehavior != null) {
           _log.d('Extension ${ext.id}: thumbnailRatio=${ext.searchBehavior!.thumbnailRatio}');
@@ -480,6 +502,7 @@ class ExtensionNotifier extends Notifier<ExtensionState> {
     }
   }
 
+
   void clearError() {
     state = state.copyWith(error: null);
   }
@@ -525,7 +548,6 @@ class ExtensionNotifier extends Notifier<ExtensionState> {
     }
   }
 
-  /// Uninstall/remove an extension
   Future<bool> removeExtension(String extensionId) async {
     state = state.copyWith(isLoading: true, error: null);
     
@@ -542,6 +564,7 @@ class ExtensionNotifier extends Notifier<ExtensionState> {
     }
   }
 
+
   Future<void> setExtensionEnabled(String extensionId, bool enabled) async {
     try {
       await PlatformBridge.setExtensionEnabled(extensionId, enabled);
@@ -578,7 +601,6 @@ class ExtensionNotifier extends Notifier<ExtensionState> {
     }
   }
 
-  /// Get settings for an extension
   Future<Map<String, dynamic>> getExtensionSettings(String extensionId) async {
     try {
       return await PlatformBridge.getExtensionSettings(extensionId);
@@ -598,7 +620,6 @@ class ExtensionNotifier extends Notifier<ExtensionState> {
     }
   }
 
-  /// Load provider priority order
   Future<void> loadProviderPriority() async {
     try {
       final priority = await PlatformBridge.getProviderPriority();
@@ -608,6 +629,7 @@ class ExtensionNotifier extends Notifier<ExtensionState> {
     }
   }
 
+
   Future<void> setProviderPriority(List<String> priority) async {
     try {
       await PlatformBridge.setProviderPriority(priority);
@@ -619,7 +641,6 @@ class ExtensionNotifier extends Notifier<ExtensionState> {
     }
   }
 
-  /// Load metadata provider priority order
   Future<void> loadMetadataProviderPriority() async {
     try {
       final priority = await PlatformBridge.getMetadataProviderPriority();
@@ -640,7 +661,6 @@ class ExtensionNotifier extends Notifier<ExtensionState> {
     }
   }
 
-  /// Cleanup all extensions (call on app close)
   Future<void> cleanup() async {
     try {
       await PlatformBridge.cleanupExtensions();
@@ -658,7 +678,6 @@ class ExtensionNotifier extends Notifier<ExtensionState> {
     }
   }
 
-  /// Get all enabled extensions
   List<Extension> get enabledExtensions {
     return state.extensions.where((ext) => ext.enabled).toList();
   }
@@ -673,7 +692,6 @@ class ExtensionNotifier extends Notifier<ExtensionState> {
     return providers;
   }
 
-  /// Get all metadata providers (built-in + extensions)
   List<String> getAllMetadataProviders() {
     final providers = ['deezer', 'spotify'];
     for (final ext in state.extensions) {
@@ -683,6 +701,7 @@ class ExtensionNotifier extends Notifier<ExtensionState> {
     }
     return providers;
   }
+
   List<Extension> get searchProviders {
     return state.extensions.where((ext) => ext.enabled && ext.hasCustomSearch).toList();
   }

lib/providers/local_library_provider.dart

@@ -0,0 +1,302 @@
+import 'dart:async';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:path_provider/path_provider.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:spotiflac_android/services/library_database.dart';
+import 'package:spotiflac_android/services/platform_bridge.dart';
+import 'package:spotiflac_android/utils/logger.dart';
+
+final _log = AppLogger('LocalLibrary');
+
+const _lastScannedAtKey = 'local_library_last_scanned_at';
+
+class LocalLibraryState {
+  final List<LocalLibraryItem> items;
+  final bool isScanning;
+  final double scanProgress;
+  final String? scanCurrentFile;
+  final int scanTotalFiles;
+  final int scanErrorCount;
+  final DateTime? lastScannedAt;
+  final Set<String> _isrcSet;
+  final Set<String> _trackKeySet;
+  final Map<String, LocalLibraryItem> _byIsrc;
+
+  LocalLibraryState({
+    this.items = const [],
+    this.isScanning = false,
+    this.scanProgress = 0,
+    this.scanCurrentFile,
+    this.scanTotalFiles = 0,
+    this.scanErrorCount = 0,
+    this.lastScannedAt,
+  })  : _isrcSet = items
+            .where((item) => item.isrc != null && item.isrc!.isNotEmpty)
+            .map((item) => item.isrc!)
+            .toSet(),
+        _trackKeySet = items.map((item) => item.matchKey).toSet(),
+        _byIsrc = Map.fromEntries(
+          items
+              .where((item) => item.isrc != null && item.isrc!.isNotEmpty)
+              .map((item) => MapEntry(item.isrc!, item)),
+        );
+
+  bool hasIsrc(String isrc) => _isrcSet.contains(isrc);
+
+  bool hasTrack(String trackName, String artistName) {
+    final key = '${trackName.toLowerCase()}|${artistName.toLowerCase()}';
+    return _trackKeySet.contains(key);
+  }
+
+  LocalLibraryItem? getByIsrc(String isrc) => _byIsrc[isrc];
+
+  LocalLibraryItem? findByTrackAndArtist(String trackName, String artistName) {
+    final key = '${trackName.toLowerCase()}|${artistName.toLowerCase()}';
+    return items.where((item) => item.matchKey == key).firstOrNull;
+  }
+
+  bool existsInLibrary({String? isrc, String? trackName, String? artistName}) {
+    if (isrc != null && isrc.isNotEmpty && hasIsrc(isrc)) {
+      return true;
+    }
+    if (trackName != null && artistName != null) {
+      return hasTrack(trackName, artistName);
+    }
+    return false;
+  }
+
+  LocalLibraryState copyWith({
+    List<LocalLibraryItem>? items,
+    bool? isScanning,
+    double? scanProgress,
+    String? scanCurrentFile,
+    int? scanTotalFiles,
+    int? scanErrorCount,
+    DateTime? lastScannedAt,
+  }) {
+    return LocalLibraryState(
+      items: items ?? this.items,
+      isScanning: isScanning ?? this.isScanning,
+      scanProgress: scanProgress ?? this.scanProgress,
+      scanCurrentFile: scanCurrentFile ?? this.scanCurrentFile,
+      scanTotalFiles: scanTotalFiles ?? this.scanTotalFiles,
+      scanErrorCount: scanErrorCount ?? this.scanErrorCount,
+      lastScannedAt: lastScannedAt ?? this.lastScannedAt,
+    );
+  }
+}
+
+class LocalLibraryNotifier extends Notifier<LocalLibraryState> {
+  final LibraryDatabase _db = LibraryDatabase.instance;
+  Timer? _progressTimer;
+  bool _isLoaded = false;
+
+  @override
+  LocalLibraryState build() {
+    ref.onDispose(() {
+      _progressTimer?.cancel();
+    });
+
+    Future.microtask(() async {
+      await _loadFromDatabase();
+    });
+    return LocalLibraryState();
+  }
+
+  Future<void> _loadFromDatabase() async {
+    if (_isLoaded) return;
+    _isLoaded = true;
+
+    try {
+      final jsonList = await _db.getAll();
+      final items = jsonList
+          .map((e) => LocalLibraryItem.fromJson(e))
+          .toList();
+      
+      DateTime? lastScannedAt;
+      try {
+        final prefs = await SharedPreferences.getInstance();
+        final lastScannedAtStr = prefs.getString(_lastScannedAtKey);
+        if (lastScannedAtStr != null && lastScannedAtStr.isNotEmpty) {
+          lastScannedAt = DateTime.tryParse(lastScannedAtStr);
+        }
+      } catch (e) {
+        _log.w('Failed to load lastScannedAt: $e');
+      }
+      
+      state = state.copyWith(items: items, lastScannedAt: lastScannedAt);
+      _log.i('Loaded ${items.length} items from library database, lastScannedAt: $lastScannedAt');
+    } catch (e, stack) {
+      _log.e('Failed to load library from database: $e', e, stack);
+    }
+  }
+
+  Future<void> reloadFromStorage() async {
+    _isLoaded = false;
+    await _loadFromDatabase();
+  }
+
+  Future<void> startScan(String folderPath) async {
+    if (state.isScanning) {
+      _log.w('Scan already in progress');
+      return;
+    }
+
+    _log.i('Starting library scan: $folderPath');
+    state = state.copyWith(
+      isScanning: true,
+      scanProgress: 0,
+      scanCurrentFile: null,
+      scanTotalFiles: 0,
+      scanErrorCount: 0,
+    );
+
+    try {
+      final cacheDir = await getApplicationCacheDirectory();
+      final coverCacheDir = '${cacheDir.path}/library_covers';
+      await PlatformBridge.setLibraryCoverCacheDir(coverCacheDir);
+      _log.i('Cover cache directory set to: $coverCacheDir');
+    } catch (e) {
+      _log.w('Failed to set cover cache directory: $e');
+    }
+
+    _startProgressPolling();
+
+    try {
+      final results = await PlatformBridge.scanLibraryFolder(folderPath);
+      
+      final items = <LocalLibraryItem>[];
+      for (final json in results) {
+        final item = LocalLibraryItem.fromJson(json);
+        items.add(item);
+      }
+
+      await _db.upsertBatch(items.map((e) => e.toJson()).toList());
+
+      final now = DateTime.now();
+      try {
+        final prefs = await SharedPreferences.getInstance();
+        await prefs.setString(_lastScannedAtKey, now.toIso8601String());
+        _log.d('Saved lastScannedAt: $now');
+      } catch (e) {
+        _log.w('Failed to save lastScannedAt: $e');
+      }
+
+      state = state.copyWith(
+        items: items,
+        isScanning: false,
+        scanProgress: 100,
+        lastScannedAt: now,
+      );
+
+      _log.i('Scan complete: ${items.length} tracks found');
+    } catch (e, stack) {
+      _log.e('Library scan failed: $e', e, stack);
+      state = state.copyWith(isScanning: false);
+    } finally {
+      _stopProgressPolling();
+    }
+  }
+
+  void _startProgressPolling() {
+    _progressTimer?.cancel();
+    _progressTimer = Timer.periodic(const Duration(milliseconds: 500), (_) async {
+      try {
+        final progress = await PlatformBridge.getLibraryScanProgress();
+        
+        state = state.copyWith(
+          scanProgress: (progress['progress_pct'] as num?)?.toDouble() ?? 0,
+          scanCurrentFile: progress['current_file'] as String?,
+          scanTotalFiles: progress['total_files'] as int? ?? 0,
+          scanErrorCount: progress['error_count'] as int? ?? 0,
+        );
+
+        if (progress['is_complete'] == true) {
+          _stopProgressPolling();
+        }
+      } catch (_) {}
+    });
+  }
+
+  void _stopProgressPolling() {
+    _progressTimer?.cancel();
+    _progressTimer = null;
+  }
+
+  Future<void> cancelScan() async {
+    if (!state.isScanning) return;
+    
+    _log.i('Cancelling library scan');
+    await PlatformBridge.cancelLibraryScan();
+    state = state.copyWith(isScanning: false);
+    _stopProgressPolling();
+  }
+
+  Future<int> cleanupMissingFiles() async {
+    final removed = await _db.cleanupMissingFiles();
+    if (removed > 0) {
+      await reloadFromStorage();
+    }
+    return removed;
+  }
+
+  Future<void> clearLibrary() async {
+    await _db.clearAll();
+    
+    try {
+      final prefs = await SharedPreferences.getInstance();
+      await prefs.remove(_lastScannedAtKey);
+    } catch (e) {
+      _log.w('Failed to clear lastScannedAt: $e');
+    }
+    
+    state = LocalLibraryState();
+    _log.i('Library cleared');
+  }
+
+  Future<void> removeItem(String id) async {
+    await _db.delete(id);
+    state = state.copyWith(
+      items: state.items.where((item) => item.id != id).toList(),
+    );
+  }
+
+  bool existsInLibrary({String? isrc, String? trackName, String? artistName}) {
+    return state.existsInLibrary(
+      isrc: isrc,
+      trackName: trackName,
+      artistName: artistName,
+    );
+  }
+
+  LocalLibraryItem? getByIsrc(String isrc) {
+    return state.getByIsrc(isrc);
+  }
+
+  LocalLibraryItem? findExisting({String? isrc, String? trackName, String? artistName}) {
+    if (isrc != null && isrc.isNotEmpty) {
+      final byIsrc = state.getByIsrc(isrc);
+      if (byIsrc != null) return byIsrc;
+    }
+    if (trackName != null && artistName != null) {
+      return state.findByTrackAndArtist(trackName, artistName);
+    }
+    return null;
+  }
+
+  Future<List<LocalLibraryItem>> search(String query) async {
+    if (query.isEmpty) return [];
+    
+    final results = await _db.search(query);
+    return results.map((e) => LocalLibraryItem.fromJson(e)).toList();
+  }
+
+  Future<int> getCount() async {
+    return await _db.getCount();
+  }
+}
+
+final localLibraryProvider =
+    NotifierProvider<LocalLibraryNotifier, LocalLibraryState>(
+      LocalLibraryNotifier.new,
+    );

lib/providers/recent_access_provider.dart

@@ -100,6 +100,8 @@ class RecentAccessState {
 
 /// Provider for managing recent access history
 class RecentAccessNotifier extends Notifier<RecentAccessState> {
+  final Future<SharedPreferences> _prefs = SharedPreferences.getInstance();
+
   @override
   RecentAccessState build() {
     _loadHistory();
@@ -107,7 +109,7 @@ class RecentAccessNotifier extends Notifier<RecentAccessState> {
   }
 
   Future<void> _loadHistory() async {
-    final prefs = await SharedPreferences.getInstance();
+    final prefs = await _prefs;
     final json = prefs.getString(_recentAccessKey);
     final hiddenJson = prefs.getStringList(_hiddenDownloadsKey);
     
@@ -120,7 +122,8 @@ class RecentAccessNotifier extends Notifier<RecentAccessState> {
         items = decoded
             .map((e) => RecentAccessItem.fromJson(e as Map<String, dynamic>))
             .toList();
-      } catch (e) {
+      } catch (_) {
+        // Ignore JSON parse errors, use empty list
       }
     }
     
@@ -132,13 +135,13 @@ class RecentAccessNotifier extends Notifier<RecentAccessState> {
   }
 
   Future<void> _saveHistory() async {
-    final prefs = await SharedPreferences.getInstance();
+    final prefs = await _prefs;
     final json = jsonEncode(state.items.map((e) => e.toJson()).toList());
     await prefs.setString(_recentAccessKey, json);
   }
 
   Future<void> _saveHiddenDownloads() async {
-    final prefs = await SharedPreferences.getInstance();
+    final prefs = await _prefs;
     await prefs.setStringList(_hiddenDownloadsKey, state.hiddenDownloadIds.toList());
   }
 

lib/providers/settings_provider.dart

@@ -1,6 +1,7 @@
 import 'dart:convert';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:shared_preferences/shared_preferences.dart';
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
 import 'package:spotiflac_android/models/settings.dart';
 import 'package:spotiflac_android/services/platform_bridge.dart';
 import 'package:spotiflac_android/utils/logger.dart';
@@ -8,8 +9,12 @@ import 'package:spotiflac_android/utils/logger.dart';
 const _settingsKey = 'app_settings';
 const _migrationVersionKey = 'settings_migration_version';
 const _currentMigrationVersion = 1;
+const _spotifyClientSecretKey = 'spotify_client_secret';
 
 class SettingsNotifier extends Notifier<AppSettings> {
+  final Future<SharedPreferences> _prefs = SharedPreferences.getInstance();
+  final FlutterSecureStorage _secureStorage = const FlutterSecureStorage();
+
   @override
   AppSettings build() {
     _loadSettings();
@@ -17,17 +22,19 @@ class SettingsNotifier extends Notifier<AppSettings> {
   }
 
   Future<void> _loadSettings() async {
-    final prefs = await SharedPreferences.getInstance();
+    final prefs = await _prefs;
     final json = prefs.getString(_settingsKey);
     if (json != null) {
       state = AppSettings.fromJson(jsonDecode(json));
       
       await _runMigrations(prefs);
-      
-      _applySpotifyCredentials();
-      
-      LogBuffer.loggingEnabled = state.enableLogging;
     }
+
+    await _loadSpotifyClientSecret(prefs);
+
+    _applySpotifyCredentials();
+    
+    LogBuffer.loggingEnabled = state.enableLogging;
   }
 
   Future<void> _runMigrations(SharedPreferences prefs) async {
@@ -46,8 +53,41 @@ class SettingsNotifier extends Notifier<AppSettings> {
   }
 
   Future<void> _saveSettings() async {
-    final prefs = await SharedPreferences.getInstance();
-    await prefs.setString(_settingsKey, jsonEncode(state.toJson()));
+    final prefs = await _prefs;
+    final settingsToSave = state.copyWith(
+      spotifyClientSecret: '',
+    );
+    await prefs.setString(_settingsKey, jsonEncode(settingsToSave.toJson()));
+  }
+
+  Future<void> _loadSpotifyClientSecret(SharedPreferences prefs) async {
+    final storedSecret = await _secureStorage.read(key: _spotifyClientSecretKey);
+    final prefsSecret = state.spotifyClientSecret;
+
+    if ((storedSecret == null || storedSecret.isEmpty) &&
+        prefsSecret.isNotEmpty) {
+      await _secureStorage.write(key: _spotifyClientSecretKey, value: prefsSecret);
+    }
+
+    final effectiveSecret = (storedSecret != null && storedSecret.isNotEmpty)
+        ? storedSecret
+        : (prefsSecret.isNotEmpty ? prefsSecret : '');
+
+    if (effectiveSecret != state.spotifyClientSecret) {
+      state = state.copyWith(spotifyClientSecret: effectiveSecret);
+    }
+
+    if (prefsSecret.isNotEmpty) {
+      await _saveSettings();
+    }
+  }
+
+  Future<void> _storeSpotifyClientSecret(String secret) async {
+    if (secret.isEmpty) {
+      await _secureStorage.delete(key: _spotifyClientSecretKey);
+    } else {
+      await _secureStorage.write(key: _spotifyClientSecretKey, value: secret);
+    }
   }
 
   Future<void> _applySpotifyCredentials() async {
@@ -155,25 +195,28 @@ class SettingsNotifier extends Notifier<AppSettings> {
     _saveSettings();
   }
 
-  void setSpotifyClientSecret(String clientSecret) {
+  Future<void> setSpotifyClientSecret(String clientSecret) async {
     state = state.copyWith(spotifyClientSecret: clientSecret);
+    await _storeSpotifyClientSecret(clientSecret);
     _saveSettings();
   }
 
-  void setSpotifyCredentials(String clientId, String clientSecret) {
+  Future<void> setSpotifyCredentials(String clientId, String clientSecret) async {
     state = state.copyWith(
       spotifyClientId: clientId,
       spotifyClientSecret: clientSecret,
     );
+    await _storeSpotifyClientSecret(clientSecret);
     _saveSettings();
     _applySpotifyCredentials();
   }
 
-  void clearSpotifyCredentials() {
+  Future<void> clearSpotifyCredentials() async {
     state = state.copyWith(
       spotifyClientId: '',
       spotifyClientSecret: '',
     );
+    await _storeSpotifyClientSecret('');
     _saveSettings();
     _applySpotifyCredentials();
   }
@@ -229,12 +272,38 @@ class SettingsNotifier extends Notifier<AppSettings> {
     _saveSettings();
   }
 
-  void setEnableMp3Option(bool enabled) {
-    state = state.copyWith(enableMp3Option: enabled);
-    // If MP3 is disabled and current quality is MP3, reset to LOSSLESS
-    if (!enabled && state.audioQuality == 'MP3') {
-      state = state.copyWith(audioQuality: 'LOSSLESS');
-    }
+  void setTidalHighFormat(String format) {
+    state = state.copyWith(tidalHighFormat: format);
+    _saveSettings();
+  }
+
+void setUseAllFilesAccess(bool enabled) {
+    state = state.copyWith(useAllFilesAccess: enabled);
+    _saveSettings();
+  }
+
+  void setAutoExportFailedDownloads(bool enabled) {
+    state = state.copyWith(autoExportFailedDownloads: enabled);
+    _saveSettings();
+  }
+
+  void setDownloadNetworkMode(String mode) {
+    state = state.copyWith(downloadNetworkMode: mode);
+    _saveSettings();
+  }
+
+  void setLocalLibraryEnabled(bool enabled) {
+    state = state.copyWith(localLibraryEnabled: enabled);
+    _saveSettings();
+  }
+
+  void setLocalLibraryPath(String path) {
+    state = state.copyWith(localLibraryPath: path);
+    _saveSettings();
+  }
+
+  void setLocalLibraryShowDuplicates(bool show) {
+    state = state.copyWith(localLibraryShowDuplicates: show);
     _saveSettings();
   }
 }

lib/providers/store_provider.dart

@@ -5,12 +5,11 @@ import 'package:spotiflac_android/utils/logger.dart';
 import 'package:spotiflac_android/providers/extension_provider.dart';
 
 final _log = AppLogger('StoreProvider');
+final RegExp _leadingVersionPrefix = RegExp(r'^v');
 
-/// Compare two semantic version strings
-/// Returns: -1 if v1 < v2, 0 if equal, 1 if v1 > v2
 int compareVersions(String v1, String v2) {
-  final parts1 = v1.replaceAll(RegExp(r'^v'), '').split('.');
-  final parts2 = v2.replaceAll(RegExp(r'^v'), '').split('.');
+  final parts1 = v1.replaceAll(_leadingVersionPrefix, '').split('.');
+  final parts2 = v2.replaceAll(_leadingVersionPrefix, '').split('.');
   
   final maxLen = parts1.length > parts2.length ? parts1.length : parts2.length;
   
@@ -24,8 +23,8 @@ int compareVersions(String v1, String v2) {
   return 0;
 }
 
-/// Extension categories
 class StoreCategory {
+
   static const String metadata = 'metadata';
   static const String download = 'download';
   static const String utility = 'utility';
@@ -110,13 +109,13 @@ class StoreExtension {
     );
   }
 
-  /// Check if this extension requires a higher app version than current
   bool get requiresNewerApp {
     if (minAppVersion == null || minAppVersion!.isEmpty) return false;
     return compareVersions(minAppVersion!, AppInfo.version) > 0;
   }
 }
 
+
 class StoreState {
   final List<StoreExtension> extensions;
   final String? selectedCategory;
@@ -163,7 +162,6 @@ class StoreState {
     );
   }
 
-  /// Get filtered extensions based on category and search
   List<StoreExtension> get filteredExtensions {
     var result = extensions;
 
@@ -185,13 +183,11 @@ class StoreState {
     return result;
   }
 
-  /// Count of extensions with updates available
   int get updatesAvailableCount {
     return extensions.where((e) => e.hasUpdate).length;
   }
 }
 
-/// Provider for managing extension store
 class StoreNotifier extends Notifier<StoreState> {
   @override
   StoreState build() {
@@ -214,7 +210,6 @@ class StoreNotifier extends Notifier<StoreState> {
     }
   }
 
-  /// Refresh extensions from store
   Future<void> refresh({bool forceRefresh = false}) async {
     state = state.copyWith(isLoading: true, clearError: true);
 
@@ -239,7 +234,6 @@ class StoreNotifier extends Notifier<StoreState> {
     }
   }
 
-  /// Set search query
   void setSearchQuery(String query) {
     state = state.copyWith(searchQuery: query);
   }
@@ -248,7 +242,6 @@ class StoreNotifier extends Notifier<StoreState> {
     state = state.copyWith(searchQuery: '', clearCategory: true);
   }
 
-  /// Download and install extension
   Future<bool> installExtension(String extensionId, String tempDir, String extensionsDir) async {
     state = state.copyWith(isDownloading: true, downloadingId: extensionId, clearError: true);
 
@@ -274,6 +267,7 @@ class StoreNotifier extends Notifier<StoreState> {
     }
   }
 
+
   Future<bool> updateExtension(String extensionId, String tempDir) async {
     state = state.copyWith(isDownloading: true, downloadingId: extensionId, clearError: true);
 

lib/providers/theme_provider.dart

@@ -3,24 +3,22 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:spotiflac_android/models/theme_settings.dart';
 
-/// Provider for theme settings state management
 final themeProvider = NotifierProvider<ThemeNotifier, ThemeSettings>(() {
   return ThemeNotifier();
 });
 
-/// Notifier for managing theme settings with persistence
 class ThemeNotifier extends Notifier<ThemeSettings> {
+  final Future<SharedPreferences> _prefs = SharedPreferences.getInstance();
+
   @override
   ThemeSettings build() {
-    // Load settings asynchronously on first access
     _loadFromStorage();
     return const ThemeSettings();
   }
 
-  /// Load theme settings from SharedPreferences
   Future<void> _loadFromStorage() async {
     try {
-      final prefs = await SharedPreferences.getInstance();
+      final prefs = await _prefs;
       final modeString = prefs.getString(kThemeModeKey);
       final useDynamic = prefs.getBool(kUseDynamicColorKey);
       final seedColor = prefs.getInt(kSeedColorKey);
@@ -37,10 +35,9 @@ class ThemeNotifier extends Notifier<ThemeSettings> {
     }
   }
 
-  /// Save current settings to SharedPreferences
   Future<void> _saveToStorage() async {
     try {
-      final prefs = await SharedPreferences.getInstance();
+      final prefs = await _prefs;
       await prefs.setString(kThemeModeKey, state.themeMode.name);
       await prefs.setBool(kUseDynamicColorKey, state.useDynamicColor);
       await prefs.setInt(kSeedColorKey, state.seedColorValue);
@@ -50,13 +47,11 @@ class ThemeNotifier extends Notifier<ThemeSettings> {
     }
   }
 
-  /// Set theme mode (light, dark, or system)
   Future<void> setThemeMode(ThemeMode mode) async {
     state = state.copyWith(themeMode: mode);
     await _saveToStorage();
   }
 
-  /// Enable or disable dynamic color from wallpaper
   Future<void> setUseDynamicColor(bool value) async {
     state = state.copyWith(useDynamicColor: value);
     await _saveToStorage();
@@ -68,19 +63,16 @@ class ThemeNotifier extends Notifier<ThemeSettings> {
     await _saveToStorage();
   }
 
-  /// Set seed color from int value
   Future<void> setSeedColorValue(int colorValue) async {
     state = state.copyWith(seedColorValue: colorValue);
     await _saveToStorage();
   }
 
-  /// Enable or disable AMOLED mode (pure black background)
   Future<void> setUseAmoled(bool value) async {
     state = state.copyWith(useAmoled: value);
     await _saveToStorage();
   }
 
-  /// Helper to convert string to ThemeMode
   ThemeMode _themeModeFromString(String? value) {
     if (value == null) return ThemeMode.system;
     return ThemeMode.values.firstWhere(
@@ -89,3 +81,4 @@ class ThemeNotifier extends Notifier<ThemeSettings> {
     );
   }
 }
+

lib/providers/track_provider.dart

@@ -22,9 +22,12 @@ class TrackState {
   final List<ArtistAlbum>? artistAlbums; // For artist page
   final List<Track>? artistTopTracks; // Artist's popular tracks
   final List<SearchArtist>? searchArtists; // For search results
+  final List<SearchAlbum>? searchAlbums; // For search results (albums)
+  final List<SearchPlaylist>? searchPlaylists; // For search results (playlists)
   final bool hasSearchText; // For back button handling
   final bool isShowingRecentAccess; // For recent access mode
   final String? searchExtensionId; // Extension ID used for current search results
+  final String? selectedSearchFilter; // Currently selected search filter (e.g., "track", "album", "artist", "playlist")
 
   const TrackState({
     this.tracks = const [],
@@ -41,12 +44,15 @@ class TrackState {
     this.artistAlbums,
     this.artistTopTracks,
     this.searchArtists,
+    this.searchAlbums,
+    this.searchPlaylists,
     this.hasSearchText = false,
     this.isShowingRecentAccess = false,
     this.searchExtensionId,
+    this.selectedSearchFilter,
   });
 
-  bool get hasContent => tracks.isNotEmpty || artistAlbums != null || (searchArtists != null && searchArtists!.isNotEmpty);
+  bool get hasContent => tracks.isNotEmpty || artistAlbums != null || (searchArtists != null && searchArtists!.isNotEmpty) || (searchAlbums != null && searchAlbums!.isNotEmpty) || (searchPlaylists != null && searchPlaylists!.isNotEmpty);
 
   TrackState copyWith({
     List<Track>? tracks,
@@ -63,9 +69,13 @@ class TrackState {
     List<ArtistAlbum>? artistAlbums,
     List<Track>? artistTopTracks,
     List<SearchArtist>? searchArtists,
+    List<SearchAlbum>? searchAlbums,
+    List<SearchPlaylist>? searchPlaylists,
     bool? hasSearchText,
     bool? isShowingRecentAccess,
     String? searchExtensionId,
+    String? selectedSearchFilter,
+    bool clearSelectedSearchFilter = false,
   }) {
     return TrackState(
       tracks: tracks ?? this.tracks,
@@ -82,9 +92,12 @@ class TrackState {
       artistAlbums: artistAlbums ?? this.artistAlbums,
       artistTopTracks: artistTopTracks ?? this.artistTopTracks,
       searchArtists: searchArtists ?? this.searchArtists,
+      searchAlbums: searchAlbums ?? this.searchAlbums,
+      searchPlaylists: searchPlaylists ?? this.searchPlaylists,
       hasSearchText: hasSearchText ?? this.hasSearchText,
       isShowingRecentAccess: isShowingRecentAccess ?? this.isShowingRecentAccess,
       searchExtensionId: searchExtensionId,
+      selectedSearchFilter: clearSelectedSearchFilter ? null : (selectedSearchFilter ?? this.selectedSearchFilter),
     );
   }
 }
@@ -127,6 +140,42 @@ class SearchArtist {
   });
 }
 
+class SearchAlbum {
+  final String id;
+  final String name;
+  final String artists;
+  final String? imageUrl;
+  final String? releaseDate;
+  final int totalTracks;
+  final String albumType;
+
+  const SearchAlbum({
+    required this.id,
+    required this.name,
+    required this.artists,
+    this.imageUrl,
+    this.releaseDate,
+    required this.totalTracks,
+    required this.albumType,
+  });
+}
+
+class SearchPlaylist {
+  final String id;
+  final String name;
+  final String owner;
+  final String? imageUrl;
+  final int totalTracks;
+
+  const SearchPlaylist({
+    required this.id,
+    required this.name,
+    required this.owner,
+    this.imageUrl,
+    required this.totalTracks,
+  });
+}
+
 class TrackNotifier extends Notifier<TrackState> {
   int _currentRequestId = 0;
 
@@ -144,11 +193,34 @@ class TrackNotifier extends Notifier<TrackState> {
     state = TrackState(isLoading: true, hasSearchText: state.hasSearchText);
 
     try {
+      // Step 1: Check for extension URL handlers first (handles YT Music, etc.)
       final extensionHandler = await PlatformBridge.findURLHandler(url);
       if (extensionHandler != null) {
         _log.i('Found extension URL handler: $extensionHandler for URL: $url');
-        final result = await PlatformBridge.handleURLWithExtension(url);
-        if (!_isRequestValid(requestId)) return;
+        
+        // Retry logic for extension URL handlers (up to 3 attempts)
+        Map<String, dynamic>? result;
+        for (int attempt = 1; attempt <= 3; attempt++) {
+          result = await PlatformBridge.handleURLWithExtension(url);
+          if (!_isRequestValid(requestId)) return;
+          
+          // Check if we got valid data
+          if (result != null && result['type'] == 'track' && result['track'] != null) {
+            final trackData = result['track'] as Map<String, dynamic>;
+            final name = trackData['name']?.toString() ?? '';
+            if (name.isNotEmpty) {
+              break;
+            }
+          } else if (result != null && (result['type'] == 'album' || result['type'] == 'playlist')) {
+            break;
+          } else if (result != null && result['type'] == 'artist') {
+            break;
+          }
+          
+          if (attempt < 3) {
+            await Future.delayed(const Duration(milliseconds: 500));
+          }
+        }
         
         if (result != null) {
           final type = result['type'] as String?;
@@ -157,6 +229,15 @@ class TrackNotifier extends Notifier<TrackState> {
           if (type == 'track' && result['track'] != null) {
             final trackData = result['track'] as Map<String, dynamic>;
             final track = _parseSearchTrack(trackData, source: extensionId);
+            
+            if (track.name.isEmpty) {
+              state = TrackState(
+                isLoading: false,
+                error: 'Failed to load track metadata from extension',
+              );
+              return;
+            }
+            
             state = TrackState(
               tracks: [track],
               isLoading: false,
@@ -202,8 +283,131 @@ class TrackNotifier extends Notifier<TrackState> {
         }
       }
       
+      // Step 2: Try Deezer URL parsing
+      if (url.contains('deezer.com') || url.contains('deezer.page.link')) {
+        _log.i('Detected Deezer URL, parsing...');
+        final parsed = await PlatformBridge.parseDeezerUrl(url);
+        if (!_isRequestValid(requestId)) return;
+        
+        final type = parsed['type'] as String;
+        final id = parsed['id'] as String;
+        
+        final metadata = await PlatformBridge.getDeezerMetadata(type, id);
+        if (!_isRequestValid(requestId)) return;
+        
+        if (type == 'track') {
+          final trackData = metadata['track'] as Map<String, dynamic>;
+          final track = _parseTrack(trackData);
+          state = TrackState(
+            tracks: [track],
+            isLoading: false,
+            coverUrl: track.coverUrl,
+          );
+        } else if (type == 'album') {
+          final albumInfo = metadata['album_info'] as Map<String, dynamic>;
+          final trackList = metadata['track_list'] as List<dynamic>;
+          final tracks = trackList.map((t) => _parseTrack(t as Map<String, dynamic>)).toList();
+          state = TrackState(
+            tracks: tracks,
+            isLoading: false,
+            albumId: id,
+            albumName: albumInfo['name'] as String?,
+            coverUrl: albumInfo['images'] as String?,
+          );
+          _preWarmCacheForTracks(tracks);
+        } else if (type == 'playlist') {
+          final playlistInfo = metadata['playlist_info'] as Map<String, dynamic>;
+          final trackList = metadata['track_list'] as List<dynamic>;
+          final tracks = trackList.map((t) => _parseTrack(t as Map<String, dynamic>)).toList();
+          state = TrackState(
+            tracks: tracks,
+            isLoading: false,
+            playlistName: playlistInfo['name'] as String?,
+            coverUrl: playlistInfo['images'] as String?,
+          );
+          _preWarmCacheForTracks(tracks);
+        } else if (type == 'artist') {
+          final artistInfo = metadata['artist_info'] as Map<String, dynamic>;
+          final albumsList = metadata['albums'] as List<dynamic>;
+          final albums = albumsList.map((a) => _parseArtistAlbum(a as Map<String, dynamic>)).toList();
+          state = TrackState(
+            tracks: [],
+            isLoading: false,
+            artistId: artistInfo['id'] as String?,
+            artistName: artistInfo['name'] as String?,
+            coverUrl: artistInfo['images'] as String?,
+            artistAlbums: albums,
+          );
+        }
+        return;
+      }
+      
+      // Step 3: Try Tidal URL parsing
+      if (url.contains('tidal.com')) {
+        _log.i('Detected Tidal URL, parsing...');
+        final parsed = await PlatformBridge.parseTidalUrl(url);
+        if (!_isRequestValid(requestId)) return;
+        
+        final type = parsed['type'] as String;
+        final id = parsed['id'] as String;
+        
+        _log.i('Tidal URL parsed: type=$type, id=$id');
+        
+        // For track URLs, convert to Spotify/Deezer and fetch metadata from there
+        if (type == 'track') {
+          try {
+            _log.i('Converting Tidal track to Spotify/Deezer via SongLink...');
+            final conversion = await PlatformBridge.convertTidalToSpotifyDeezer(url);
+            if (!_isRequestValid(requestId)) return;
+            
+            final spotifyUrl = conversion['spotify_url'] as String?;
+            final deezerUrl = conversion['deezer_url'] as String?;
+            
+            if (spotifyUrl != null && spotifyUrl.isNotEmpty) {
+              _log.i('Found Spotify URL: $spotifyUrl, fetching metadata...');
+              final metadata = await PlatformBridge.getSpotifyMetadataWithFallback(spotifyUrl);
+              if (!_isRequestValid(requestId)) return;
+              
+              final trackData = metadata['track'] as Map<String, dynamic>;
+              final track = _parseTrack(trackData);
+              state = TrackState(
+                tracks: [track],
+                isLoading: false,
+                coverUrl: track.coverUrl,
+              );
+              return;
+            } else if (deezerUrl != null && deezerUrl.isNotEmpty) {
+              _log.i('Found Deezer URL: $deezerUrl, fetching metadata...');
+              final deezerParsed = await PlatformBridge.parseDeezerUrl(deezerUrl);
+              final metadata = await PlatformBridge.getDeezerMetadata('track', deezerParsed['id'] as String);
+              if (!_isRequestValid(requestId)) return;
+              
+              final trackData = metadata['track'] as Map<String, dynamic>;
+              final track = _parseTrack(trackData);
+              state = TrackState(
+                tracks: [track],
+                isLoading: false,
+                coverUrl: track.coverUrl,
+              );
+              return;
+            }
+          } catch (e) {
+            _log.w('Failed to convert Tidal URL via SongLink: $e');
+          }
+        }
+        
+        // For album/artist/playlist, not yet supported
+        state = TrackState(
+          isLoading: false,
+          error: 'Tidal $type links are not fully supported yet. Only track links work via SongLink conversion.',
+          hasSearchText: state.hasSearchText,
+        );
+        return;
+      }
+      
+      // Step 4: Fall back to Spotify parsing
       final parsed = await PlatformBridge.parseSpotifyUrl(url);
-      if (!_isRequestValid(requestId)) return; // Request cancelled
+      if (!_isRequestValid(requestId)) return;
       
       final type = parsed['type'] as String;
 
@@ -215,7 +419,7 @@ class TrackNotifier extends Notifier<TrackState> {
         rethrow;
       }
       
-      if (!_isRequestValid(requestId)) return; // Request cancelled
+      if (!_isRequestValid(requestId)) return;
 
       if (type == 'track') {
         final trackData = metadata['track'] as Map<String, dynamic>;
@@ -268,10 +472,13 @@ class TrackNotifier extends Notifier<TrackState> {
     }
   }
 
-  Future<void> search(String query, {String? metadataSource}) async {
+  Future<void> search(String query, {String? metadataSource, String? filterOverride}) async {
     final requestId = ++_currentRequestId;
+    
+    // Preserve selected filter during loading
+    final currentFilter = filterOverride ?? state.selectedSearchFilter;
 
-    state = TrackState(isLoading: true, hasSearchText: state.hasSearchText);
+    state = TrackState(isLoading: true, hasSearchText: state.hasSearchText, selectedSearchFilter: currentFilter);
 
     try {
       final settings = ref.read(settingsProvider);
@@ -289,7 +496,7 @@ class TrackNotifier extends Notifier<TrackState> {
       final source = metadataSource ?? 'deezer';
       
       _log.i(
-        'Search started: source=$source, query="$query", useExtensions=$useExtensions',
+        'Search started: source=$source, query="$query", useExtensions=$useExtensions, filter=$currentFilter',
       );
       
       Map<String, dynamic> results;
@@ -315,11 +522,11 @@ class TrackNotifier extends Notifier<TrackState> {
       
       if (source == 'deezer') {
         _log.d('Calling Deezer search API...');
-        results = await PlatformBridge.searchDeezerAll(query, trackLimit: 20, artistLimit: 5);
-        _log.i('Deezer returned ${(results['tracks'] as List?)?.length ?? 0} tracks, ${(results['artists'] as List?)?.length ?? 0} artists');
+        results = await PlatformBridge.searchDeezerAll(query, trackLimit: 20, artistLimit: 2, filter: currentFilter);
+        _log.i('Deezer returned ${(results['tracks'] as List?)?.length ?? 0} tracks, ${(results['artists'] as List?)?.length ?? 0} artists, ${(results['albums'] as List?)?.length ?? 0} albums');
       } else {
         _log.d('Calling Spotify search API...');
-        results = await PlatformBridge.searchSpotifyAll(query, trackLimit: 20, artistLimit: 5);
+        results = await PlatformBridge.searchSpotifyAll(query, trackLimit: 20, artistLimit: 2);
         _log.i('Spotify returned ${(results['tracks'] as List?)?.length ?? 0} tracks, ${(results['artists'] as List?)?.length ?? 0} artists');
       }
       
@@ -330,8 +537,9 @@ class TrackNotifier extends Notifier<TrackState> {
       
       final trackList = results['tracks'] as List<dynamic>? ?? [];
       final artistList = results['artists'] as List<dynamic>? ?? [];
+      final albumList = results['albums'] as List<dynamic>? ?? [];
       
-      _log.d('Raw results: ${trackList.length} tracks, ${artistList.length} artists');
+      _log.d('Raw results: ${trackList.length} tracks, ${artistList.length} artists, ${albumList.length} albums');
       
       final tracks = <Track>[];
       
@@ -373,25 +581,61 @@ class TrackNotifier extends Notifier<TrackState> {
         }
       }
       
-      _log.i('Search complete: ${tracks.length} tracks (${extensionTracks.length} from extensions), ${artists.length} artists parsed successfully');
+      final albums = <SearchAlbum>[];
+      for (int i = 0; i < albumList.length; i++) {
+        final a = albumList[i];
+        try {
+          if (a is Map<String, dynamic>) {
+            albums.add(_parseSearchAlbum(a));
+          } else {
+            _log.w('Album[$i] is not a Map: ${a.runtimeType}');
+          }
+        } catch (e) {
+          _log.e('Failed to parse album[$i]: $e', e);
+        }
+      }
+      
+      final playlistList = results['playlists'] as List<dynamic>? ?? [];
+      final playlists = <SearchPlaylist>[];
+      for (int i = 0; i < playlistList.length; i++) {
+        final p = playlistList[i];
+        try {
+          if (p is Map<String, dynamic>) {
+            playlists.add(_parseSearchPlaylist(p));
+          } else {
+            _log.w('Playlist[$i] is not a Map: ${p.runtimeType}');
+          }
+        } catch (e) {
+          _log.e('Failed to parse playlist[$i]: $e', e);
+        }
+      }
+      
+      _log.i('Search complete: ${tracks.length} tracks (${extensionTracks.length} from extensions), ${artists.length} artists, ${albums.length} albums, ${playlists.length} playlists parsed successfully');
       
       state = TrackState(
         tracks: tracks,
         searchArtists: artists,
+        searchAlbums: albums,
+        searchPlaylists: playlists,
         isLoading: false,
         hasSearchText: state.hasSearchText,
+        selectedSearchFilter: currentFilter, // Preserve filter in results
       );
     } catch (e, stackTrace) {
       if (!_isRequestValid(requestId)) return;
       _log.e('Search failed: $e', e, stackTrace);
-      state = TrackState(isLoading: false, error: e.toString(), hasSearchText: state.hasSearchText);
+      state = TrackState(isLoading: false, error: e.toString(), hasSearchText: state.hasSearchText, selectedSearchFilter: currentFilter);
     }
   }
 
   Future<void> customSearch(String extensionId, String query, {Map<String, dynamic>? options}) async {
     final requestId = ++_currentRequestId;
 
-    state = TrackState(isLoading: true, hasSearchText: state.hasSearchText);
+    state = TrackState(
+      isLoading: true,
+      hasSearchText: state.hasSearchText,
+      selectedSearchFilter: state.selectedSearchFilter, // Preserve filter during loading
+    );
 
     try {
       _log.i('Custom search started: extension=$extensionId, query="$query"');
@@ -423,6 +667,7 @@ class TrackNotifier extends Notifier<TrackState> {
         isLoading: false,
         hasSearchText: state.hasSearchText,
         searchExtensionId: extensionId, // Store which extension was used
+        selectedSearchFilter: state.selectedSearchFilter, // Preserve selected filter
       );
     } catch (e, stackTrace) {
       if (!_isRequestValid(requestId)) return;
@@ -466,7 +711,8 @@ class TrackNotifier extends Notifier<TrackState> {
       final tracks = List<Track>.from(state.tracks);
       tracks[index] = updatedTrack;
       state = state.copyWith(tracks: tracks);
-    } catch (e) {
+    } catch (_) {
+      // Silently ignore update failures - track may have been removed
     }
   }
 
@@ -474,6 +720,15 @@ class TrackNotifier extends Notifier<TrackState> {
     state = const TrackState();
   }
 
+  /// Set selected search filter for extension search
+  void setSearchFilter(String? filter) {
+    if (state.selectedSearchFilter == filter) return;
+    state = state.copyWith(
+      selectedSearchFilter: filter,
+      clearSelectedSearchFilter: filter == null,
+    );
+  }
+
   /// Set search text state for back button handling
   void setSearchText(bool hasText) {
     if (state.hasSearchText == hasText) {
@@ -571,6 +826,28 @@ class TrackNotifier extends Notifier<TrackState> {
     );
   }
 
+  SearchAlbum _parseSearchAlbum(Map<String, dynamic> data) {
+    return SearchAlbum(
+      id: data['id'] as String? ?? '',
+      name: data['name'] as String? ?? '',
+      artists: data['artists'] as String? ?? '',
+      imageUrl: data['images'] as String?,
+      releaseDate: data['release_date'] as String?,
+      totalTracks: data['total_tracks'] as int? ?? 0,
+      albumType: data['album_type'] as String? ?? 'album',
+    );
+  }
+
+  SearchPlaylist _parseSearchPlaylist(Map<String, dynamic> data) {
+    return SearchPlaylist(
+      id: data['id'] as String? ?? '',
+      name: data['name'] as String? ?? '',
+      owner: data['owner'] as String? ?? '',
+      imageUrl: data['images'] as String?,
+      totalTracks: data['total_tracks'] as int? ?? 0,
+    );
+  }
+
   void _preWarmCacheForTracks(List<Track> tracks) {
     final tracksWithIsrc = tracks.where((t) => t.isrc != null && t.isrc!.isNotEmpty).toList();
     if (tracksWithIsrc.isEmpty) return;

lib/screens/album_screen.dart

@@ -10,6 +10,7 @@ import 'package:spotiflac_android/models/download_item.dart';
 import 'package:spotiflac_android/providers/download_queue_provider.dart';
 import 'package:spotiflac_android/providers/settings_provider.dart';
 import 'package:spotiflac_android/providers/recent_access_provider.dart';
+import 'package:spotiflac_android/providers/local_library_provider.dart';
 import 'package:spotiflac_android/services/platform_bridge.dart';
 import 'package:spotiflac_android/widgets/download_service_picker.dart';
 import 'package:spotiflac_android/screens/artist_screen.dart';
@@ -44,10 +45,10 @@ class AlbumScreen extends ConsumerStatefulWidget {
   final String albumId;
   final String albumName;
   final String? coverUrl;
-  final List<Track>? tracks; // Optional - will fetch if null
-  final String? extensionId; // If from extension
-  final String? artistId; // Artist ID for navigation
-  final String? artistName; // Artist name for navigation
+  final List<Track>? tracks;
+  final String? extensionId;
+  final String? artistId;
+  final String? artistName;
 
   const AlbumScreen({
     super.key,
@@ -80,7 +81,9 @@ class _AlbumScreenState extends ConsumerState<AlbumScreen> {
     _scrollController.addListener(_onScroll);
     
     WidgetsBinding.instance.addPostFrameCallback((_) {
-      final providerId = widget.albumId.startsWith('deezer:') ? 'deezer' : 'spotify';
+      // Use extensionId if available, otherwise detect from albumId prefix
+      final providerId = widget.extensionId ?? 
+          (widget.albumId.startsWith('deezer:') ? 'deezer' : 'spotify');
       ref.read(recentAccessProvider.notifier).recordAlbumAccess(
         id: widget.albumId,
         name: widget.albumName,
@@ -90,10 +93,14 @@ class _AlbumScreenState extends ConsumerState<AlbumScreen> {
 );
     });
     
-    _tracks = widget.tracks ?? _AlbumCache.get(widget.albumId);
-    _artistId = widget.artistId; // Use provided artist ID if available
+    if (widget.tracks != null && widget.tracks!.isNotEmpty) {
+      _tracks = widget.tracks;
+    } else {
+      _tracks = _AlbumCache.get(widget.albumId);
+    }
+    _artistId = widget.artistId;
     
-    if (_tracks == null) {
+    if (_tracks == null || _tracks!.isEmpty) {
       _fetchTracks();
     }
     
@@ -114,7 +121,7 @@ class _AlbumScreenState extends ConsumerState<AlbumScreen> {
     }
   }
 
-Future<void> _extractDominantColor() async {
+  Future<void> _extractDominantColor() async {
     if (widget.coverUrl == null) return;
     final color = await PaletteService.instance.extractDominantColor(widget.coverUrl);
     if (mounted && color != null) {
@@ -123,21 +130,18 @@ Future<void> _extractDominantColor() async {
   }
 
   String _formatReleaseDate(String date) {
-    // Handle formats: "2024-01-15", "2024-01", "2024"
     if (date.length >= 10) {
-      // Full date: 2024-01-15
       final parts = date.substring(0, 10).split('-');
       if (parts.length == 3) {
-        return '${parts[2]}/${parts[1]}/${parts[0]}'; // DD/MM/YYYY
+        return '${parts[2]}/${parts[1]}/${parts[0]}';
       }
     } else if (date.length >= 7) {
-      // Month: 2024-01
       final parts = date.split('-');
       if (parts.length >= 2) {
-        return '${parts[1]}/${parts[0]}'; // MM/YYYY
+        return '${parts[1]}/${parts[0]}';
       }
     }
-    return date; // Year only or unknown format
+    return date;
   }
 
 Future<void> _fetchTracks() async {
@@ -156,7 +160,6 @@ Future<void> _fetchTracks() async {
       final trackList = metadata['track_list'] as List<dynamic>;
       final tracks = trackList.map((t) => _parseTrack(t as Map<String, dynamic>)).toList();
       
-      // Extract artist ID from album_info if available
       final albumInfo = metadata['album_info'] as Map<String, dynamic>?;
       final artistId = albumInfo?['artist_id'] as String?;
       
@@ -228,7 +231,7 @@ Future<void> _fetchTracks() async {
 
   Widget _buildAppBar(BuildContext context, ColorScheme colorScheme) {
     final screenWidth = MediaQuery.of(context).size.width;
-    final coverSize = screenWidth * 0.5; // 50% of screen width
+    final coverSize = screenWidth * 0.5;
     final bgColor = _dominantColor ?? colorScheme.surface;
     
     return SliverAppBar(
@@ -261,7 +264,6 @@ Future<void> _fetchTracks() async {
             background: Stack(
               fit: StackFit.expand,
               children: [
-                // Background with dominant color
                 AnimatedContainer(
                   duration: const Duration(milliseconds: 500),
                   decoration: BoxDecoration(
@@ -493,11 +495,9 @@ ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(context.l10n.s
   }
 
   void _navigateToArtist(BuildContext context, String artistName) {
-    // Use stored artist ID if available, otherwise use a placeholder
     final artistId = _artistId ?? 
         (widget.albumId.startsWith('deezer:') ? 'deezer:unknown' : 'unknown');
     
-    // Don't navigate if artist ID is unknown
     if (artistId == 'unknown' || artistId == 'deezer:unknown' || artistId.isEmpty) {
       ScaffoldMessenger.of(context).showSnackBar(
         SnackBar(content: Text('Artist information not available')),
@@ -505,7 +505,6 @@ ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(context.l10n.s
       return;
     }
     
-    // If from extension, use ExtensionArtistScreen
     if (widget.extensionId != null) {
       Navigator.push(
         context,
@@ -613,6 +612,17 @@ class _AlbumTrackItem extends ConsumerWidget {
       return state.isDownloaded(track.id);
     }));
     
+    final settings = ref.watch(settingsProvider);
+    final showLocalLibraryIndicator = settings.localLibraryEnabled && settings.localLibraryShowDuplicates;
+    final isInLocalLibrary = showLocalLibraryIndicator 
+        ? ref.watch(localLibraryProvider.select((state) => 
+            state.existsInLibrary(
+              isrc: track.isrc,
+              trackName: track.name,
+              artistName: track.artistName,
+            )))
+        : false;
+    
     final isQueued = queueItem != null;
     final isDownloading = queueItem?.status == DownloadStatus.downloading;
     final isFinalizing = queueItem?.status == DownloadStatus.finalizing;
@@ -642,17 +652,46 @@ child: ListTile(
             ),
           ),
           title: Text(track.name, maxLines: 1, overflow: TextOverflow.ellipsis, style: Theme.of(context).textTheme.bodyLarge?.copyWith(fontWeight: FontWeight.w500)),
-          subtitle: Text(track.artistName, maxLines: 1, overflow: TextOverflow.ellipsis, style: TextStyle(color: colorScheme.onSurfaceVariant)),
-          trailing: _buildDownloadButton(context, ref, colorScheme, isQueued: isQueued, isDownloading: isDownloading, isFinalizing: isFinalizing, showAsDownloaded: showAsDownloaded, isInHistory: isInHistory, progress: progress),
-          onTap: () => _handleTap(context, ref, isQueued: isQueued, isInHistory: isInHistory),
+          subtitle: Row(
+            children: [
+              Flexible(child: Text(track.artistName, maxLines: 1, overflow: TextOverflow.ellipsis, style: TextStyle(color: colorScheme.onSurfaceVariant))),
+              if (isInLocalLibrary) ...[
+                const SizedBox(width: 6),
+                Container(
+                  padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 2),
+                  decoration: BoxDecoration(
+                    color: colorScheme.tertiaryContainer,
+                    borderRadius: BorderRadius.circular(4),
+                  ),
+                  child: Row(
+                    mainAxisSize: MainAxisSize.min,
+                    children: [
+                      Icon(Icons.folder_outlined, size: 10, color: colorScheme.onTertiaryContainer),
+                      const SizedBox(width: 3),
+                      Text(context.l10n.libraryInLibrary, style: TextStyle(fontSize: 9, fontWeight: FontWeight.w500, color: colorScheme.onTertiaryContainer)),
+                    ],
+                  ),
+                ),
+              ],
+            ],
+          ),
+          trailing: _buildDownloadButton(context, ref, colorScheme, isQueued: isQueued, isDownloading: isDownloading, isFinalizing: isFinalizing, showAsDownloaded: showAsDownloaded, isInHistory: isInHistory, isInLocalLibrary: isInLocalLibrary, progress: progress),
+          onTap: () => _handleTap(context, ref, isQueued: isQueued, isInHistory: isInHistory, isInLocalLibrary: isInLocalLibrary),
         ),
       ),
     );
   }
 
-  void _handleTap(BuildContext context, WidgetRef ref, {required bool isQueued, required bool isInHistory}) async {
+  void _handleTap(BuildContext context, WidgetRef ref, {required bool isQueued, required bool isInHistory, required bool isInLocalLibrary}) async {
     if (isQueued) return;
     
+    if (isInLocalLibrary) {
+      if (context.mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(context.l10n.snackbarAlreadyInLibrary(track.name))));
+      }
+      return;
+    }
+    
     if (isInHistory) {
       final historyItem = ref.read(downloadHistoryProvider.notifier).getBySpotifyId(track.id);
       if (historyItem != null) {
@@ -677,6 +716,7 @@ child: ListTile(
     required bool isFinalizing,
     required bool showAsDownloaded,
     required bool isInHistory,
+    required bool isInLocalLibrary,
     required double progress,
   }) {
     const double size = 44.0;
@@ -684,7 +724,7 @@ child: ListTile(
     
     if (showAsDownloaded) {
       return GestureDetector(
-        onTap: () => _handleTap(context, ref, isQueued: isQueued, isInHistory: isInHistory),
+        onTap: () => _handleTap(context, ref, isQueued: isQueued, isInHistory: isInHistory, isInLocalLibrary: isInLocalLibrary),
         child: Container(width: size, height: size, decoration: BoxDecoration(color: colorScheme.primaryContainer, shape: BoxShape.circle), child: Icon(Icons.check, color: colorScheme.onPrimaryContainer, size: iconSize)),
       );
     } else if (isFinalizing) {

lib/screens/artist_screen.dart

@@ -12,6 +12,7 @@ import 'package:spotiflac_android/providers/track_provider.dart';
 import 'package:spotiflac_android/providers/settings_provider.dart';
 import 'package:spotiflac_android/providers/download_queue_provider.dart';
 import 'package:spotiflac_android/providers/recent_access_provider.dart';
+import 'package:spotiflac_android/providers/local_library_provider.dart';
 import 'package:spotiflac_android/services/platform_bridge.dart';
 import 'package:spotiflac_android/screens/album_screen.dart';
 import 'package:spotiflac_android/screens/home_tab.dart' show ExtensionAlbumScreen;
@@ -73,7 +74,7 @@ class ArtistScreen extends ConsumerStatefulWidget {
   final int? monthlyListeners;
   final List<ArtistAlbum>? albums;
   final List<Track>? topTracks;
-  final String? extensionId; // If set, skip fetching from Spotify/Deezer
+  final String? extensionId;
 
   const ArtistScreen({
     super.key,
@@ -102,7 +103,6 @@ class _ArtistScreenState extends ConsumerState<ArtistScreen> {
   bool _showTitleInAppBar = false;
   final ScrollController _scrollController = ScrollController();
 
-  // Selection mode state
   bool _isSelectionMode = false;
   final Set<String> _selectedAlbumIds = {};
   bool _isFetchingDiscography = false;
@@ -111,7 +111,6 @@ class _ArtistScreenState extends ConsumerState<ArtistScreen> {
   void initState() {
     super.initState();
     
-    // Setup scroll listener for sticky title
     _scrollController.addListener(_onScroll);
     
     WidgetsBinding.instance.addPostFrameCallback((_) {
@@ -321,11 +320,9 @@ return PopScope(
             if (compilations.isNotEmpty) 
               SliverToBoxAdapter(child: _buildAlbumSection(context.l10n.artistCompilations, compilations, colorScheme)),
           ],
-          // Add padding at bottom for selection bar
           SliverToBoxAdapter(child: SizedBox(height: _isSelectionMode ? 120 : 32)),
         ],
       ),
-          // Selection action bar
           if (_isSelectionMode)
             _buildSelectionBar(context, colorScheme, albums),
         ],
@@ -403,14 +400,12 @@ return PopScope(
             padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
             child: Row(
               children: [
-                // Close button
                 IconButton(
                   onPressed: _exitSelectionMode,
                   icon: const Icon(Icons.close),
                   tooltip: context.l10n.dialogCancel,
                 ),
                 const SizedBox(width: 8),
-                // Selection info
                 Expanded(
                   child: Column(
                     crossAxisAlignment: CrossAxisAlignment.start,
@@ -432,13 +427,11 @@ return PopScope(
                     ],
                   ),
                 ),
-                // Select all / Deselect button
                 TextButton(
                   onPressed: allSelected ? _deselectAll : () => _selectAll(allAlbums),
                   child: Text(allSelected ? context.l10n.actionDeselect : context.l10n.actionSelectAll),
                 ),
                 const SizedBox(width: 8),
-                // Download button
                 FilledButton.icon(
                   onPressed: selectedCount > 0 ? () => _downloadSelectedAlbums(context, selectedAlbums) : null,
                   icon: const Icon(Icons.download, size: 18),
@@ -472,7 +465,6 @@ return PopScope(
           child: Column(
             mainAxisSize: MainAxisSize.min,
             children: [
-              // Handle bar
               Container(
                 width: 40,
                 height: 4,
@@ -482,7 +474,6 @@ return PopScope(
                   borderRadius: BorderRadius.circular(2),
                 ),
               ),
-              // Title
               Padding(
                 padding: const EdgeInsets.fromLTRB(24, 0, 24, 16),
                 child: Row(
@@ -576,7 +567,6 @@ return PopScope(
     
     setState(() => _isFetchingDiscography = true);
 
-    // Show progress dialog
     if (!mounted) {
       setState(() => _isFetchingDiscography = false);
       return;
@@ -598,7 +588,6 @@ return PopScope(
     int fetchedCount = 0;
     int failedCount = 0;
 
-    // Fetch tracks from each album
     for (final album in albums) {
       if (!_isFetchingDiscography) break; // Cancelled
 
@@ -619,12 +608,10 @@ return PopScope(
 
     setState(() => _isFetchingDiscography = false);
 
-    // Close progress dialog
     if (mounted) {
       Navigator.of(context, rootNavigator: true).pop();
     }
 
-    // Show warning if some albums failed
     if (failedCount > 0 && mounted) {
       ScaffoldMessenger.of(context).showSnackBar(
         SnackBar(content: Text(context.l10n.discographyFailedToFetch)),
@@ -667,14 +654,12 @@ return PopScope(
       return;
     }
 
-    // Add to queue
     ref.read(downloadQueueProvider.notifier).addMultipleToQueue(
       tracksToQueue,
       service,
       qualityOverride: qualityOverride,
     );
 
-    // Show success message
     if (mounted) {
       final message = skippedCount > 0
           ? context.l10n.discographySkippedDownloaded(tracksToQueue.length, skippedCount)
@@ -697,14 +682,12 @@ return PopScope(
 
   Future<List<Track>> _fetchAlbumTracks(ArtistAlbum album) async {
     if (album.providerId != null && album.providerId!.isNotEmpty) {
-      // Extension album
       final result = await PlatformBridge.getAlbumWithExtension(album.providerId!, album.id);
       if (result != null && result['tracks'] != null) {
         final tracksList = result['tracks'] as List<dynamic>;
         return tracksList.map((t) => _parseTrack(t as Map<String, dynamic>)).toList();
       }
     } else if (album.id.startsWith('deezer:')) {
-      // Deezer album
       final deezerId = album.id.replaceFirst('deezer:', '');
       final metadata = await PlatformBridge.getDeezerMetadata('album', deezerId);
       if (metadata['tracks'] != null) {
@@ -712,7 +695,6 @@ return PopScope(
         return tracksList.map((t) => _parseTrackFromDeezer(t as Map<String, dynamic>, album)).toList();
       }
     } else {
-      // Spotify album
       final url = 'https://open.spotify.com/album/${album.id}';
       final result = await PlatformBridge.handleURLWithExtension(url);
       if (result != null && result['tracks'] != null) {
@@ -955,6 +937,18 @@ if (hasValidImage)
       return state.isDownloaded(track.id);
     }));
     
+    // Check local library for duplicate detection
+    final settings = ref.watch(settingsProvider);
+    final showLocalLibraryIndicator = settings.localLibraryEnabled && settings.localLibraryShowDuplicates;
+    final isInLocalLibrary = showLocalLibraryIndicator 
+        ? ref.watch(localLibraryProvider.select((state) => 
+            state.existsInLibrary(
+              isrc: track.isrc,
+              trackName: track.name,
+              artistName: track.artistName,
+            )))
+        : false;
+    
     final isQueued = queueItem != null;
     final isDownloading = queueItem?.status == DownloadStatus.downloading;
     final isFinalizing = queueItem?.status == DownloadStatus.finalizing;
@@ -964,7 +958,7 @@ if (hasValidImage)
     final showAsDownloaded = isCompleted || (!isQueued && isInHistory);
     
     return InkWell(
-      onTap: () => _handlePopularTrackTap(track, isQueued: isQueued, isInHistory: isInHistory),
+      onTap: () => _handlePopularTrackTap(track, isQueued: isQueued, isInHistory: isInHistory, isInLocalLibrary: isInLocalLibrary),
       child: Padding(
         padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
         child: Row(
@@ -1042,6 +1036,7 @@ if (hasValidImage)
               isFinalizing: isFinalizing,
               showAsDownloaded: showAsDownloaded,
               isInHistory: isInHistory,
+              isInLocalLibrary: isInLocalLibrary,
               progress: progress,
             ),
           ],
@@ -1051,9 +1046,18 @@ if (hasValidImage)
   }
 
   /// Handle tap on popular track item
-  void _handlePopularTrackTap(Track track, {required bool isQueued, required bool isInHistory}) async {
+  void _handlePopularTrackTap(Track track, {required bool isQueued, required bool isInHistory, required bool isInLocalLibrary}) async {
     if (isQueued) return;
     
+    if (isInLocalLibrary) {
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text(context.l10n.snackbarAlreadyInLibrary(track.name))),
+        );
+      }
+      return;
+    }
+    
     if (isInHistory) {
       final historyItem = ref.read(downloadHistoryProvider.notifier).getBySpotifyId(track.id);
       if (historyItem != null) {
@@ -1082,6 +1086,7 @@ if (hasValidImage)
     required bool isFinalizing,
     required bool showAsDownloaded,
     required bool isInHistory,
+    required bool isInLocalLibrary,
     required double progress,
   }) {
     const double size = 40.0;
@@ -1089,7 +1094,7 @@ if (hasValidImage)
     
     if (showAsDownloaded) {
       return GestureDetector(
-        onTap: () => _handlePopularTrackTap(track, isQueued: isQueued, isInHistory: isInHistory),
+        onTap: () => _handlePopularTrackTap(track, isQueued: isQueued, isInHistory: isInHistory, isInLocalLibrary: isInLocalLibrary),
         child: Container(
           width: size,
           height: size,

lib/screens/local_album_screen.dart

@@ -0,0 +1,768 @@
+import 'dart:io';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:open_filex/open_filex.dart';
+import 'package:spotiflac_android/l10n/l10n.dart';
+import 'package:spotiflac_android/utils/mime_utils.dart';
+import 'package:spotiflac_android/services/library_database.dart';
+import 'package:spotiflac_android/services/palette_service.dart';
+import 'package:spotiflac_android/providers/local_library_provider.dart';
+
+/// Screen to display tracks from a local library album
+class LocalAlbumScreen extends ConsumerStatefulWidget {
+  final String albumName;
+  final String artistName;
+  final String? coverPath;
+  final List<LocalLibraryItem> tracks;
+
+  const LocalAlbumScreen({
+    super.key,
+    required this.albumName,
+    required this.artistName,
+    this.coverPath,
+    required this.tracks,
+  });
+
+  @override
+  ConsumerState<LocalAlbumScreen> createState() => _LocalAlbumScreenState();
+}
+
+class _LocalAlbumScreenState extends ConsumerState<LocalAlbumScreen> {
+  bool _isSelectionMode = false;
+  final Set<String> _selectedIds = {};
+  Color? _dominantColor;
+  bool _showTitleInAppBar = false;
+  final ScrollController _scrollController = ScrollController();
+  late List<LocalLibraryItem> _sortedTracksCache;
+  late Map<int, List<LocalLibraryItem>> _discGroupsCache;
+  late List<int> _sortedDiscNumbersCache;
+  late bool _hasMultipleDiscsCache;
+
+  @override
+  void initState() {
+    super.initState();
+    _scrollController.addListener(_onScroll);
+    _rebuildTrackCaches();
+    final cachedColor = PaletteService.instance.getCached(widget.coverPath);
+    if (cachedColor != null) {
+      _dominantColor = cachedColor;
+    }
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      _extractDominantColor();
+    });
+  }
+
+  @override
+  void didUpdateWidget(covariant LocalAlbumScreen oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (!identical(oldWidget.tracks, widget.tracks) ||
+        oldWidget.tracks.length != widget.tracks.length) {
+      _rebuildTrackCaches();
+    }
+    if (oldWidget.coverPath != widget.coverPath) {
+      final cachedColor = PaletteService.instance.getCached(widget.coverPath);
+      if (cachedColor != null && cachedColor != _dominantColor) {
+        _dominantColor = cachedColor;
+      }
+      _extractDominantColor();
+    }
+  }
+
+  @override
+  void dispose() {
+    _scrollController.removeListener(_onScroll);
+    _scrollController.dispose();
+    super.dispose();
+  }
+
+  void _onScroll() {
+    final shouldShow = _scrollController.offset > 280;
+    if (shouldShow != _showTitleInAppBar) {
+      setState(() => _showTitleInAppBar = shouldShow);
+    }
+  }
+
+  Future<void> _extractDominantColor() async {
+    if (widget.coverPath == null || widget.coverPath!.isEmpty) return;
+    
+    // Extract color from local file
+    final color = await PaletteService.instance.extractDominantColorFromFile(widget.coverPath!);
+    if (mounted && color != null && color != _dominantColor) {
+      setState(() {
+        _dominantColor = color;
+      });
+    }
+  }
+
+  List<LocalLibraryItem> _buildSortedTracks() {
+    final tracks = List<LocalLibraryItem>.from(widget.tracks);
+    tracks.sort((a, b) {
+      // Sort by disc number first, then by track number
+      final aDisc = a.discNumber ?? 1;
+      final bDisc = b.discNumber ?? 1;
+      if (aDisc != bDisc) return aDisc.compareTo(bDisc);
+      final aNum = a.trackNumber ?? 999;
+      final bNum = b.trackNumber ?? 999;
+      if (aNum != bNum) return aNum.compareTo(bNum);
+      return a.trackName.compareTo(b.trackName);
+    });
+    return tracks;
+  }
+
+  void _rebuildTrackCaches() {
+    _sortedTracksCache = _buildSortedTracks();
+    _discGroupsCache = _groupTracksByDisc(_sortedTracksCache);
+    _sortedDiscNumbersCache = _discGroupsCache.keys.toList()..sort();
+    _hasMultipleDiscsCache = _discGroupsCache.length > 1;
+  }
+
+  Map<int, List<LocalLibraryItem>> _groupTracksByDisc(List<LocalLibraryItem> tracks) {
+    final discMap = <int, List<LocalLibraryItem>>{};
+    for (final track in tracks) {
+      final discNumber = track.discNumber ?? 1;
+      discMap.putIfAbsent(discNumber, () => []).add(track);
+    }
+    return discMap;
+  }
+
+  void _enterSelectionMode(String itemId) {
+    HapticFeedback.mediumImpact();
+    setState(() {
+      _isSelectionMode = true;
+      _selectedIds.add(itemId);
+    });
+  }
+
+  void _exitSelectionMode() {
+    setState(() {
+      _isSelectionMode = false;
+      _selectedIds.clear();
+    });
+  }
+
+  void _toggleSelection(String itemId) {
+    setState(() {
+      if (_selectedIds.contains(itemId)) {
+        _selectedIds.remove(itemId);
+        if (_selectedIds.isEmpty) {
+          _isSelectionMode = false;
+        }
+      } else {
+        _selectedIds.add(itemId);
+      }
+    });
+  }
+
+  void _selectAll(List<LocalLibraryItem> tracks) {
+    setState(() {
+      _selectedIds.addAll(tracks.map((e) => e.id));
+    });
+  }
+
+  Future<void> _deleteSelected(List<LocalLibraryItem> currentTracks) async {
+    final count = _selectedIds.length;
+    final confirmed = await showDialog<bool>(
+      context: context,
+      builder: (ctx) => AlertDialog(
+        title: Text(context.l10n.downloadedAlbumDeleteSelected),
+        content: Text(context.l10n.downloadedAlbumDeleteMessage(count)),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(ctx, false),
+            child: Text(context.l10n.dialogCancel),
+          ),
+          FilledButton(
+            onPressed: () => Navigator.pop(ctx, true),
+            style: FilledButton.styleFrom(
+              backgroundColor: Theme.of(context).colorScheme.error,
+            ),
+            child: Text(context.l10n.dialogDelete),
+          ),
+        ],
+      ),
+    );
+
+    if (confirmed == true && mounted) {
+      final libraryNotifier = ref.read(localLibraryProvider.notifier);
+      final idsToDelete = _selectedIds.toList();
+      
+      int deletedCount = 0;
+      for (final id in idsToDelete) {
+        final item = currentTracks.where((e) => e.id == id).firstOrNull;
+        if (item != null) {
+          try {
+            final file = File(item.filePath);
+            if (await file.exists()) {
+              await file.delete();
+            }
+          } catch (_) {}
+          libraryNotifier.removeItem(id);
+          deletedCount++;
+        }
+      }
+      
+      _exitSelectionMode();
+      
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text(context.l10n.snackbarDeletedTracks(deletedCount))),
+        );
+        
+        // Go back if all tracks were deleted
+        if (deletedCount == currentTracks.length) {
+          Navigator.pop(context);
+        }
+      }
+    }
+  }
+
+  Future<void> _openFile(String filePath) async {
+    try {
+      final mimeType = audioMimeTypeForPath(filePath);
+      await OpenFilex.open(filePath, type: mimeType);
+    } catch (e) {
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text(context.l10n.snackbarCannotOpenFile(e.toString()))),
+        );
+      }
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final colorScheme = Theme.of(context).colorScheme;
+    final bottomPadding = MediaQuery.of(context).padding.bottom;
+    final tracks = _sortedTracksCache;
+    
+    // Show empty state if no tracks found
+    if (tracks.isEmpty) {
+      return Scaffold(
+        appBar: AppBar(
+          title: Text(widget.albumName),
+        ),
+        body: const Center(
+          child: Text('No tracks found for this album'),
+        ),
+      );
+    }
+    
+    final validIds = tracks.map((t) => t.id).toSet();
+    _selectedIds.removeWhere((id) => !validIds.contains(id));
+    if (_selectedIds.isEmpty && _isSelectionMode) {
+      WidgetsBinding.instance.addPostFrameCallback((_) {
+        if (mounted) setState(() => _isSelectionMode = false);
+      });
+    }
+
+    return PopScope(
+      canPop: !_isSelectionMode,
+      onPopInvokedWithResult: (didPop, result) {
+        if (!didPop && _isSelectionMode) {
+          _exitSelectionMode();
+        }
+      },
+      child: Scaffold(
+        body: Stack(
+          children: [
+            CustomScrollView(
+              controller: _scrollController,
+              slivers: [
+                _buildAppBar(context, colorScheme),
+                _buildInfoCard(context, colorScheme, tracks),
+                _buildTrackListHeader(context, colorScheme, tracks),
+                _buildTrackList(context, colorScheme, tracks),
+                SliverToBoxAdapter(child: SizedBox(height: _isSelectionMode ? 120 : 32)),
+              ],
+            ),
+            
+            AnimatedPositioned(
+              duration: const Duration(milliseconds: 250),
+              curve: Curves.easeOutCubic,
+              left: 0,
+              right: 0,
+              bottom: _isSelectionMode ? 0 : -(200 + bottomPadding),
+              child: _buildSelectionBottomBar(context, colorScheme, tracks, bottomPadding),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildAppBar(BuildContext context, ColorScheme colorScheme) {
+    final screenWidth = MediaQuery.of(context).size.width;
+    final coverSize = screenWidth * 0.5;
+    final bgColor = _dominantColor ?? colorScheme.surface;
+    
+    return SliverAppBar(
+      expandedHeight: 320,
+      pinned: true,
+      stretch: true,
+      backgroundColor: colorScheme.surface,
+      surfaceTintColor: Colors.transparent,
+      title: AnimatedOpacity(
+        duration: const Duration(milliseconds: 200),
+        opacity: _showTitleInAppBar ? 1.0 : 0.0,
+        child: Text(
+          widget.albumName,
+          style: TextStyle(
+            color: colorScheme.onSurface,
+            fontWeight: FontWeight.w600,
+            fontSize: 16,
+          ),
+          maxLines: 1,
+          overflow: TextOverflow.ellipsis,
+        ),
+      ),
+      flexibleSpace: LayoutBuilder(
+        builder: (context, constraints) {
+          final collapseRatio = (constraints.maxHeight - kToolbarHeight) / (320 - kToolbarHeight);
+          final showContent = collapseRatio > 0.3;
+          
+          return FlexibleSpaceBar(
+            collapseMode: CollapseMode.none,
+            background: Stack(
+              fit: StackFit.expand,
+              children: [
+                // Background with dominant color
+                AnimatedContainer(
+                  duration: const Duration(milliseconds: 500),
+                  decoration: BoxDecoration(
+                    gradient: LinearGradient(
+                      begin: Alignment.topCenter,
+                      end: Alignment.bottomCenter,
+                      colors: [
+                        bgColor,
+                        bgColor.withValues(alpha: 0.8),
+                        colorScheme.surface,
+                      ],
+                      stops: const [0.0, 0.6, 1.0],
+                    ),
+                  ),
+                ),
+                // Cover image centered
+                AnimatedOpacity(
+                  duration: const Duration(milliseconds: 150),
+                  opacity: showContent ? 1.0 : 0.0,
+                  child: Center(
+                    child: Padding(
+                      padding: const EdgeInsets.only(top: 60),
+                      child: Container(
+                        width: coverSize,
+                        height: coverSize,
+                        decoration: BoxDecoration(
+                          borderRadius: BorderRadius.circular(20),
+                          boxShadow: [
+                            BoxShadow(
+                              color: Colors.black.withValues(alpha: 0.4),
+                              blurRadius: 30,
+                              offset: const Offset(0, 15),
+                            ),
+                          ],
+                        ),
+                        child: ClipRRect(
+                          borderRadius: BorderRadius.circular(20),
+                          child: widget.coverPath != null
+                              ? Image.file(
+                                  File(widget.coverPath!),
+                                  fit: BoxFit.cover,
+                                  cacheWidth: (coverSize * 2).toInt(),
+                                  errorBuilder: (context, error, stackTrace) =>
+                                      Container(
+                                        color: colorScheme.surfaceContainerHighest,
+                                        child: Icon(Icons.album, size: 64, color: colorScheme.onSurfaceVariant),
+                                      ),
+                                )
+                              : Container(
+                                  color: colorScheme.surfaceContainerHighest,
+                                  child: Icon(Icons.album, size: 64, color: colorScheme.onSurfaceVariant),
+                                ),
+                        ),
+                      ),
+                    ),
+                  ),
+                ),
+              ],
+            ),
+            stretchModes: const [StretchMode.zoomBackground, StretchMode.blurBackground],
+          );
+        },
+      ),
+      leading: IconButton(
+        icon: Container(
+          padding: const EdgeInsets.all(8),
+          decoration: BoxDecoration(color: colorScheme.surface.withValues(alpha: 0.8), shape: BoxShape.circle),
+          child: Icon(Icons.arrow_back, color: colorScheme.onSurface),
+        ),
+        onPressed: () => Navigator.pop(context),
+      ),
+    );
+  }
+
+  Widget _buildInfoCard(BuildContext context, ColorScheme colorScheme, List<LocalLibraryItem> tracks) {
+    return SliverToBoxAdapter(
+      child: Padding(
+        padding: const EdgeInsets.all(16),
+        child: Card(
+          elevation: 0,
+          color: colorScheme.surfaceContainerLow,
+          shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(20)),
+          child: Padding(
+            padding: const EdgeInsets.all(20),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Text(
+                  widget.albumName,
+                  style: Theme.of(context).textTheme.headlineSmall?.copyWith(fontWeight: FontWeight.bold, color: colorScheme.onSurface),
+                ),
+                const SizedBox(height: 4),
+                Text(
+                  widget.artistName,
+                  style: Theme.of(context).textTheme.bodyLarge?.copyWith(color: colorScheme.onSurfaceVariant),
+                ),
+                const SizedBox(height: 12),
+                Row(
+                  children: [
+                    // "Local" badge
+                    Container(
+                      padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
+                      decoration: BoxDecoration(color: colorScheme.tertiaryContainer, borderRadius: BorderRadius.circular(20)),
+                      child: Row(
+                        mainAxisSize: MainAxisSize.min,
+                        children: [
+                          Icon(Icons.folder, size: 14, color: colorScheme.onTertiaryContainer),
+                          const SizedBox(width: 4),
+                          Text('Local', style: TextStyle(color: colorScheme.onTertiaryContainer, fontWeight: FontWeight.w600, fontSize: 12)),
+                        ],
+                      ),
+                    ),
+                    const SizedBox(width: 8),
+                    // Track count
+                    Container(
+                      padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
+                      decoration: BoxDecoration(color: colorScheme.surfaceContainerHighest, borderRadius: BorderRadius.circular(20)),
+                      child: Row(
+                        mainAxisSize: MainAxisSize.min,
+                        children: [
+                          Icon(Icons.music_note, size: 14, color: colorScheme.onSurfaceVariant),
+                          const SizedBox(width: 4),
+                          Text('${tracks.length} tracks', style: TextStyle(color: colorScheme.onSurfaceVariant, fontWeight: FontWeight.w600, fontSize: 12)),
+                        ],
+                      ),
+                    ),
+                    const SizedBox(width: 8),
+                    // Quality badge if all tracks have the same quality
+                    if (_getCommonQuality(tracks) != null)
+                      Container(
+                        padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
+                        decoration: BoxDecoration(
+                          color: _getCommonQuality(tracks)!.contains('24') 
+                              ? colorScheme.primaryContainer 
+                              : colorScheme.surfaceContainerHighest,
+                          borderRadius: BorderRadius.circular(20),
+                        ),
+                        child: Text(
+                          _getCommonQuality(tracks)!,
+                          style: TextStyle(
+                            color: _getCommonQuality(tracks)!.contains('24') 
+                                ? colorScheme.onPrimaryContainer 
+                                : colorScheme.onSurfaceVariant,
+                            fontWeight: FontWeight.w600,
+                            fontSize: 12,
+                          ),
+                        ),
+                      ),
+                  ],
+                ),
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+
+  String? _getCommonQuality(List<LocalLibraryItem> tracks) {
+    if (tracks.isEmpty) return null;
+    final first = tracks.first;
+    if (first.bitDepth == null || first.sampleRate == null) return null;
+    
+    final firstQuality = '${first.bitDepth}/${(first.sampleRate! / 1000).round()}kHz';
+    for (final track in tracks) {
+      if (track.bitDepth != first.bitDepth || track.sampleRate != first.sampleRate) {
+        return null;
+      }
+    }
+    return firstQuality;
+  }
+
+  Widget _buildTrackListHeader(BuildContext context, ColorScheme colorScheme, List<LocalLibraryItem> tracks) {
+    return SliverToBoxAdapter(
+      child: Padding(
+        padding: const EdgeInsets.fromLTRB(20, 8, 20, 8),
+        child: Row(
+          children: [
+            Icon(Icons.queue_music, size: 20, color: colorScheme.primary),
+            const SizedBox(width: 8),
+            Text(context.l10n.downloadedAlbumTracksHeader, style: Theme.of(context).textTheme.titleMedium?.copyWith(fontWeight: FontWeight.w600, color: colorScheme.onSurface)),
+            const Spacer(),
+            if (!_isSelectionMode)
+              TextButton.icon(
+                onPressed: tracks.isNotEmpty ? () => _enterSelectionMode(tracks.first.id) : null,
+                icon: const Icon(Icons.checklist, size: 18),
+                label: Text(context.l10n.actionSelect),
+                style: TextButton.styleFrom(visualDensity: VisualDensity.compact),
+              ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildTrackList(BuildContext context, ColorScheme colorScheme, List<LocalLibraryItem> tracks) {
+    final discGroups = _discGroupsCache;
+    final hasMultipleDiscs = _hasMultipleDiscsCache;
+    
+    final slivers = <Widget>[];
+    
+    for (final discNumber in _sortedDiscNumbersCache) {
+      final discTracks = discGroups[discNumber]!;
+      
+      if (hasMultipleDiscs) {
+        slivers.add(
+          SliverToBoxAdapter(
+            child: Padding(
+              padding: const EdgeInsets.fromLTRB(20, 16, 20, 8),
+              child: Row(
+                children: [
+                  Container(
+                    padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
+                    decoration: BoxDecoration(
+                      color: colorScheme.secondaryContainer,
+                      borderRadius: BorderRadius.circular(16),
+                    ),
+                    child: Row(
+                      mainAxisSize: MainAxisSize.min,
+                      children: [
+                        Icon(Icons.album, size: 16, color: colorScheme.onSecondaryContainer),
+                        const SizedBox(width: 6),
+                        Text(
+                          context.l10n.downloadedAlbumDiscHeader(discNumber),
+                          style: Theme.of(context).textTheme.labelLarge?.copyWith(
+                            color: colorScheme.onSecondaryContainer,
+                            fontWeight: FontWeight.w600,
+                          ),
+                        ),
+                      ],
+                    ),
+                  ),
+                  const SizedBox(width: 12),
+                  Expanded(
+                    child: Container(
+                      height: 1,
+                      color: colorScheme.outlineVariant.withValues(alpha: 0.5),
+                    ),
+                  ),
+                ],
+              ),
+            ),
+          ),
+        );
+      }
+      
+      slivers.add(
+        SliverList(
+          delegate: SliverChildBuilderDelegate(
+            (context, index) => _buildTrackItem(context, colorScheme, discTracks[index]),
+            childCount: discTracks.length,
+          ),
+        ),
+      );
+    }
+    
+    return SliverMainAxisGroup(slivers: slivers);
+  }
+
+  Widget _buildTrackItem(BuildContext context, ColorScheme colorScheme, LocalLibraryItem track) {
+    final isSelected = _selectedIds.contains(track.id);
+    
+    return Padding(
+      padding: const EdgeInsets.symmetric(horizontal: 8),
+      child: Card(
+        elevation: 0,
+        color: isSelected ? colorScheme.primaryContainer.withValues(alpha: 0.3) : Colors.transparent,
+        margin: const EdgeInsets.symmetric(vertical: 2),
+        child: ListTile(
+          shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
+          onTap: _isSelectionMode 
+              ? () => _toggleSelection(track.id)
+              : () => _openFile(track.filePath),
+          onLongPress: _isSelectionMode ? null : () => _enterSelectionMode(track.id),
+          leading: Row(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              if (_isSelectionMode) ...[
+                Container(
+                  width: 24,
+                  height: 24,
+                  decoration: BoxDecoration(
+                    color: isSelected ? colorScheme.primary : Colors.transparent,
+                    shape: BoxShape.circle,
+                    border: Border.all(color: isSelected ? colorScheme.primary : colorScheme.outline, width: 2),
+                  ),
+                  child: isSelected 
+                      ? Icon(Icons.check, color: colorScheme.onPrimary, size: 16)
+                      : null,
+                ),
+                const SizedBox(width: 12),
+              ],
+              SizedBox(
+                width: 24,
+                child: Text(
+                  track.trackNumber?.toString() ?? '-',
+                  style: Theme.of(context).textTheme.bodyMedium?.copyWith(
+                    color: colorScheme.onSurfaceVariant,
+                    fontWeight: FontWeight.w500,
+                  ),
+                  textAlign: TextAlign.center,
+                ),
+              ),
+            ],
+          ),
+          title: Text(
+            track.trackName,
+            maxLines: 1,
+            overflow: TextOverflow.ellipsis,
+            style: Theme.of(context).textTheme.bodyLarge?.copyWith(fontWeight: FontWeight.w500),
+          ),
+          subtitle: Row(
+            children: [
+              Flexible(
+                child: Text(
+                  track.artistName,
+                  maxLines: 1,
+                  overflow: TextOverflow.ellipsis,
+                  style: TextStyle(color: colorScheme.onSurfaceVariant),
+                ),
+              ),
+              if (track.format != null) ...[
+                Text(' • ', style: TextStyle(color: colorScheme.onSurfaceVariant, fontSize: 12)),
+                Text(
+                  track.format!.toUpperCase(),
+                  style: TextStyle(color: colorScheme.onSurfaceVariant, fontSize: 12),
+                ),
+              ],
+            ],
+          ),
+          trailing: _isSelectionMode ? null : IconButton(
+            onPressed: () => _openFile(track.filePath),
+            icon: Icon(Icons.play_arrow, color: colorScheme.primary),
+            style: IconButton.styleFrom(
+              backgroundColor: colorScheme.primaryContainer.withValues(alpha: 0.3),
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+
+  Widget _buildSelectionBottomBar(BuildContext context, ColorScheme colorScheme, List<LocalLibraryItem> tracks, double bottomPadding) {
+    final selectedCount = _selectedIds.length;
+    final allSelected = selectedCount == tracks.length && tracks.isNotEmpty;
+
+    return Container(
+      decoration: BoxDecoration(
+        color: colorScheme.surfaceContainerHigh,
+        borderRadius: const BorderRadius.vertical(top: Radius.circular(28)),
+        boxShadow: [
+          BoxShadow(
+            color: Colors.black.withValues(alpha: 0.15),
+            blurRadius: 12,
+            offset: const Offset(0, -4),
+          ),
+        ],
+      ),
+      child: SafeArea(
+        top: false,
+        child: Padding(
+          padding: EdgeInsets.fromLTRB(16, 16, 16, bottomPadding > 0 ? 8 : 16),
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              Container(
+                width: 32,
+                height: 4,
+                margin: const EdgeInsets.only(bottom: 16),
+                decoration: BoxDecoration(
+                  color: colorScheme.outlineVariant,
+                  borderRadius: BorderRadius.circular(2),
+                ),
+              ),
+              Row(
+                children: [
+                  IconButton.filledTonal(
+                    onPressed: _exitSelectionMode,
+                    icon: const Icon(Icons.close),
+                    style: IconButton.styleFrom(
+                      backgroundColor: colorScheme.surfaceContainerHighest,
+                    ),
+                  ),
+                  const SizedBox(width: 12),
+                  Expanded(
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        Text(
+                          context.l10n.downloadedAlbumSelectedCount(selectedCount),
+                          style: Theme.of(context).textTheme.titleMedium?.copyWith(fontWeight: FontWeight.bold),
+                        ),
+                        Text(
+                          allSelected ? context.l10n.downloadedAlbumAllSelected : context.l10n.downloadedAlbumTapToSelect,
+                          style: Theme.of(context).textTheme.bodySmall?.copyWith(color: colorScheme.onSurfaceVariant),
+                        ),
+                      ],
+                    ),
+                  ),
+                  TextButton.icon(
+                    onPressed: () {
+                      if (allSelected) {
+                        _exitSelectionMode();
+                      } else {
+                        _selectAll(tracks);
+                      }
+                    },
+                    icon: Icon(allSelected ? Icons.deselect : Icons.select_all, size: 20),
+                    label: Text(allSelected ? context.l10n.actionDeselect : context.l10n.actionSelectAll),
+                    style: TextButton.styleFrom(foregroundColor: colorScheme.primary),
+                  ),
+                ],
+              ),
+              const SizedBox(height: 16),
+              SizedBox(
+                width: double.infinity,
+                child: FilledButton.icon(
+                  onPressed: selectedCount > 0 ? () => _deleteSelected(tracks) : null,
+                  icon: const Icon(Icons.delete_outline),
+                  label: Text(
+                    selectedCount > 0 
+                        ? context.l10n.downloadedAlbumDeleteCount(selectedCount)
+                        : context.l10n.downloadedAlbumSelectToDelete,
+                  ),
+                  style: FilledButton.styleFrom(
+                    backgroundColor: selectedCount > 0 ? colorScheme.error : colorScheme.surfaceContainerHighest,
+                    foregroundColor: selectedCount > 0 ? colorScheme.onError : colorScheme.onSurfaceVariant,
+                    padding: const EdgeInsets.symmetric(vertical: 16),
+                    shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
+                  ),
+                ),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}

lib/screens/main_shell.dart

@@ -4,6 +4,7 @@ import 'package:flutter/services.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:spotiflac_android/l10n/l10n.dart';
 import 'package:spotiflac_android/providers/download_queue_provider.dart';
+import 'package:spotiflac_android/providers/extension_provider.dart';
 import 'package:spotiflac_android/providers/settings_provider.dart';
 import 'package:spotiflac_android/providers/store_provider.dart';
 import 'package:spotiflac_android/providers/track_provider.dart';
@@ -61,18 +62,35 @@ class _MainShellState extends ConsumerState<MainShell> {
     );
   }
 
-  void _handleSharedUrl(String url) {
-    Navigator.of(context).popUntil((route) => route.isFirst);
+  Future<void> _handleSharedUrl(String url) async {
+    // Wait for extensions to be initialized before handling URL
+    final extState = ref.read(extensionProvider);
+    if (!extState.isInitialized) {
+      _log.d('Waiting for extensions to initialize before handling URL...');
+      // Wait up to 5 seconds for extensions to initialize
+      for (int i = 0; i < 50; i++) {
+        await Future.delayed(const Duration(milliseconds: 100));
+        if (!mounted) return;
+        if (ref.read(extensionProvider).isInitialized) {
+          _log.d('Extensions initialized, proceeding with URL handling');
+          break;
+        }
+      }
+    }
     
+    if (!mounted) return;
+    
+    Navigator.of(context).popUntil((route) => route.isFirst);
+
     if (_currentIndex != 0) {
       _onNavTap(0);
     }
     ref.read(trackProvider.notifier).fetchFromUrl(url);
     ref.read(settingsProvider.notifier).setHasSearchedBefore();
     if (mounted) {
-      ScaffoldMessenger.of(context).showSnackBar(
-        SnackBar(content: Text(context.l10n.loadingSharedLink)),
-      );
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(SnackBar(content: Text(context.l10n.loadingSharedLink)));
     }
   }
 
@@ -83,7 +101,9 @@ class _MainShellState extends ConsumerState<MainShell> {
     final settings = ref.read(settingsProvider);
     if (!settings.checkForUpdates) return;
 
-    final updateInfo = await UpdateChecker.checkForUpdate(channel: settings.updateChannel);
+    final updateInfo = await UpdateChecker.checkForUpdate(
+      channel: settings.updateChannel,
+    );
     if (updateInfo != null && mounted) {
       showUpdateDialog(
         context,
@@ -104,6 +124,7 @@ class _MainShellState extends ConsumerState<MainShell> {
 
   void _onNavTap(int index) {
     if (_currentIndex != index) {
+      HapticFeedback.selectionClick();
       setState(() => _currentIndex = index);
       _pageController.animateToPage(
         index,
@@ -122,35 +143,38 @@ class _MainShellState extends ConsumerState<MainShell> {
 
   void _handleBackPress() {
     final trackState = ref.read(trackProvider);
-    
+
     final isKeyboardVisible = MediaQuery.of(context).viewInsets.bottom > 0;
     if (isKeyboardVisible) {
       FocusManager.instance.primaryFocus?.unfocus();
       return;
     }
-    
+
     if (_currentIndex == 0 && trackState.isShowingRecentAccess) {
       ref.read(trackProvider.notifier).setShowingRecentAccess(false);
       FocusManager.instance.primaryFocus?.unfocus();
       return;
     }
-    
-    if (_currentIndex == 0 && !trackState.isLoading && (trackState.hasSearchText || trackState.hasContent)) {
+
+    if (_currentIndex == 0 &&
+        !trackState.isLoading &&
+        (trackState.hasSearchText || trackState.hasContent)) {
       ref.read(trackProvider.notifier).clear();
       return;
     }
-    
+
     if (_currentIndex != 0) {
       _onNavTap(0);
       return;
     }
-    
+
     if (trackState.isLoading) {
       return;
     }
-    
+
     final now = DateTime.now();
-    if (_lastBackPress != null && now.difference(_lastBackPress!) < const Duration(seconds: 2)) {
+    if (_lastBackPress != null &&
+        now.difference(_lastBackPress!) < const Duration(seconds: 2)) {
       SystemNavigator.pop();
     } else {
       _lastBackPress = now;
@@ -166,19 +190,26 @@ class _MainShellState extends ConsumerState<MainShell> {
 
   @override
   Widget build(BuildContext context) {
-    final queueState = ref.watch(downloadQueueProvider.select((s) => s.queuedCount));
+    final queueState = ref.watch(
+      downloadQueueProvider.select((s) => s.queuedCount),
+    );
     final trackState = ref.watch(trackProvider);
-    final showStore = ref.watch(settingsProvider.select((s) => s.showExtensionStore));
-    final storeUpdatesCount = ref.watch(storeProvider.select((s) => s.updatesAvailableCount));
-    
+    final showStore = ref.watch(
+      settingsProvider.select((s) => s.showExtensionStore),
+    );
+    final storeUpdatesCount = ref.watch(
+      storeProvider.select((s) => s.updatesAvailableCount),
+    );
+
     final isKeyboardVisible = MediaQuery.of(context).viewInsets.bottom > 0;
-    
-    final canPop = _currentIndex == 0 && 
-                   !trackState.hasSearchText && 
-                   !trackState.hasContent && 
-                   !trackState.isLoading &&
-                   !trackState.isShowingRecentAccess &&
-                   !isKeyboardVisible;
+
+    final canPop =
+        _currentIndex == 0 &&
+        !trackState.hasSearchText &&
+        !trackState.hasContent &&
+        !trackState.isLoading &&
+        !trackState.isShowingRecentAccess &&
+        !isKeyboardVisible;
 
     final tabs = <Widget>[
       const HomeTab(),
@@ -195,21 +226,23 @@ class _MainShellState extends ConsumerState<MainShell> {
     final destinations = <NavigationDestination>[
       NavigationDestination(
         icon: const Icon(Icons.home_outlined),
-        selectedIcon: const Icon(Icons.home),
+        selectedIcon: BouncingIcon(child: const Icon(Icons.home)),
         label: l10n.navHome,
       ),
       NavigationDestination(
         icon: Badge(
           isLabelVisible: queueState > 0,
           label: Text('$queueState'),
-          child: const Icon(Icons.history_outlined),
+          child: const Icon(Icons.library_music_outlined),
         ),
-        selectedIcon: Badge(
-          isLabelVisible: queueState > 0,
-          label: Text('$queueState'),
-          child: const Icon(Icons.history),
+        selectedIcon: SlidingIcon(
+          child: Badge(
+            isLabelVisible: queueState > 0,
+            label: Text('$queueState'),
+            child: const Icon(Icons.library_music),
+          ),
         ),
-        label: l10n.navHistory,
+        label: l10n.navLibrary,
       ),
       if (showStore)
         NavigationDestination(
@@ -218,16 +251,18 @@ class _MainShellState extends ConsumerState<MainShell> {
             label: Text('$storeUpdatesCount'),
             child: const Icon(Icons.store_outlined),
           ),
-          selectedIcon: Badge(
-            isLabelVisible: storeUpdatesCount > 0,
-            label: Text('$storeUpdatesCount'),
-            child: const Icon(Icons.store),
+          selectedIcon: SwingIcon(
+            child: Badge(
+              isLabelVisible: storeUpdatesCount > 0,
+              label: Text('$storeUpdatesCount'),
+              child: const Icon(Icons.store),
+            ),
           ),
           label: l10n.navStore,
         ),
       NavigationDestination(
         icon: const Icon(Icons.settings_outlined),
-        selectedIcon: const Icon(Icons.settings),
+        selectedIcon: SpinIcon(child: const Icon(Icons.settings)),
         label: l10n.navSettings,
       ),
     ];
@@ -248,7 +283,7 @@ class _MainShellState extends ConsumerState<MainShell> {
         if (didPop) {
           return;
         }
-        
+
         _handleBackPress();
       },
       child: Scaffold(
@@ -261,13 +296,198 @@ class _MainShellState extends ConsumerState<MainShell> {
         bottomNavigationBar: NavigationBar(
           selectedIndex: _currentIndex.clamp(0, maxIndex),
           onDestinationSelected: _onNavTap,
-          animationDuration: const Duration(milliseconds: 200),
+          animationDuration: const Duration(milliseconds: 500),
           backgroundColor: Theme.of(context).brightness == Brightness.dark
-              ? Color.alphaBlend(Colors.white.withValues(alpha: 0.05), Theme.of(context).colorScheme.surface)
-              : Color.alphaBlend(Colors.black.withValues(alpha: 0.03), Theme.of(context).colorScheme.surface),
+              ? Color.alphaBlend(
+                  Colors.white.withValues(alpha: 0.05),
+                  Theme.of(context).colorScheme.surface,
+                )
+              : Color.alphaBlend(
+                  Colors.black.withValues(alpha: 0.03),
+                  Theme.of(context).colorScheme.surface,
+                ),
           destinations: destinations,
         ),
       ),
     );
   }
 }
+
+class BouncingIcon extends StatefulWidget {
+  final Widget child;
+  const BouncingIcon({super.key, required this.child});
+
+  @override
+  State<BouncingIcon> createState() => _BouncingIconState();
+}
+
+class _BouncingIconState extends State<BouncingIcon>
+    with SingleTickerProviderStateMixin {
+  late AnimationController _controller;
+  late Animation<double> _scaleAnimation;
+
+  @override
+  void initState() {
+    super.initState();
+    _controller = AnimationController(
+      duration: const Duration(milliseconds: 400),
+      vsync: this,
+    );
+    _scaleAnimation = Tween<double>(
+      begin: 0.1,
+      end: 1.0,
+    ).animate(CurvedAnimation(parent: _controller, curve: Curves.elasticOut));
+    _controller.forward();
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return ScaleTransition(scale: _scaleAnimation, child: widget.child);
+  }
+}
+
+class SlidingIcon extends StatefulWidget {
+  final Widget child;
+  const SlidingIcon({super.key, required this.child});
+
+  @override
+  State<SlidingIcon> createState() => _SlidingIconState();
+}
+
+class _SlidingIconState extends State<SlidingIcon>
+    with SingleTickerProviderStateMixin {
+  late AnimationController _controller;
+  late Animation<Offset> _offsetAnimation;
+  late Animation<double> _fadeAnimation;
+
+  @override
+  void initState() {
+    super.initState();
+    _controller = AnimationController(
+      duration: const Duration(milliseconds: 350),
+      vsync: this,
+    );
+    _offsetAnimation = Tween<Offset>(
+      begin: const Offset(0, 0.5),
+      end: Offset.zero,
+    ).animate(CurvedAnimation(parent: _controller, curve: Curves.easeOutBack));
+    _fadeAnimation = Tween<double>(
+      begin: 0.0,
+      end: 1.0,
+    ).animate(CurvedAnimation(parent: _controller, curve: Curves.easeOut));
+    _controller.forward();
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return FadeTransition(
+      opacity: _fadeAnimation,
+      child: SlideTransition(position: _offsetAnimation, child: widget.child),
+    );
+  }
+}
+
+class SwingIcon extends StatefulWidget {
+  final Widget child;
+  const SwingIcon({super.key, required this.child});
+
+  @override
+  State<SwingIcon> createState() => _SwingIconState();
+}
+
+class _SwingIconState extends State<SwingIcon>
+    with SingleTickerProviderStateMixin {
+  late AnimationController _controller;
+  late Animation<double> _rotationAnimation;
+
+  @override
+  void initState() {
+    super.initState();
+    _controller = AnimationController(
+      duration: const Duration(milliseconds: 600),
+      vsync: this,
+    );
+    // Create a swinging motion (like a pendulum/sign)
+    _rotationAnimation = TweenSequence<double>([
+      TweenSequenceItem(tween: Tween(begin: 0.0, end: -0.2), weight: 20),
+      TweenSequenceItem(tween: Tween(begin: -0.2, end: 0.15), weight: 20),
+      TweenSequenceItem(tween: Tween(begin: 0.15, end: -0.1), weight: 20),
+      TweenSequenceItem(tween: Tween(begin: -0.1, end: 0.05), weight: 20),
+      TweenSequenceItem(tween: Tween(begin: 0.05, end: 0.0), weight: 20),
+    ]).animate(CurvedAnimation(parent: _controller, curve: Curves.easeInOut));
+
+    _controller.forward();
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return AnimatedBuilder(
+      animation: _rotationAnimation,
+      builder: (context, child) {
+        return Transform.rotate(
+          angle: _rotationAnimation.value,
+          alignment: Alignment.topCenter,
+          child: child,
+        );
+      },
+      child: widget.child,
+    );
+  }
+}
+
+class SpinIcon extends StatefulWidget {
+  final Widget child;
+  const SpinIcon({super.key, required this.child});
+
+  @override
+  State<SpinIcon> createState() => _SpinIconState();
+}
+
+class _SpinIconState extends State<SpinIcon>
+    with SingleTickerProviderStateMixin {
+  late AnimationController _controller;
+  late Animation<double> _rotationAnimation;
+
+  @override
+  void initState() {
+    super.initState();
+    _controller = AnimationController(
+      duration: const Duration(milliseconds: 500),
+      vsync: this,
+    );
+    _rotationAnimation = Tween<double>(
+      begin: 0.0,
+      end: 0.5,
+    ).animate(CurvedAnimation(parent: _controller, curve: Curves.easeOutBack));
+    _controller.forward();
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return RotationTransition(turns: _rotationAnimation, child: widget.child);
+  }
+}

lib/screens/playlist_screen.dart

@@ -4,23 +4,27 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:cached_network_image/cached_network_image.dart';
 import 'package:spotiflac_android/services/palette_service.dart';
 import 'package:spotiflac_android/services/cover_cache_manager.dart';
+import 'package:spotiflac_android/services/platform_bridge.dart';
 import 'package:spotiflac_android/l10n/l10n.dart';
 import 'package:spotiflac_android/models/track.dart';
 import 'package:spotiflac_android/models/download_item.dart';
 import 'package:spotiflac_android/providers/download_queue_provider.dart';
 import 'package:spotiflac_android/providers/settings_provider.dart';
+import 'package:spotiflac_android/providers/local_library_provider.dart';
 import 'package:spotiflac_android/widgets/download_service_picker.dart';
 
 class PlaylistScreen extends ConsumerStatefulWidget {
   final String playlistName;
   final String? coverUrl;
   final List<Track> tracks;
+  final String? playlistId;
 
   const PlaylistScreen({
     super.key,
     required this.playlistName,
     this.coverUrl,
     required this.tracks,
+    this.playlistId,
   });
 
   @override
@@ -31,12 +35,18 @@ class _PlaylistScreenState extends ConsumerState<PlaylistScreen> {
   Color? _dominantColor;
   bool _showTitleInAppBar = false;
   final ScrollController _scrollController = ScrollController();
+  List<Track>? _fetchedTracks;
+  bool _isLoading = false;
+  String? _error;
+
+  List<Track> get _tracks => _fetchedTracks ?? widget.tracks;
 
   @override
   void initState() {
     super.initState();
     _scrollController.addListener(_onScroll);
     _extractDominantColor();
+    _fetchTracksIfNeeded();
   }
 
   @override
@@ -46,6 +56,65 @@ class _PlaylistScreenState extends ConsumerState<PlaylistScreen> {
     super.dispose();
   }
 
+  Future<void> _fetchTracksIfNeeded() async {
+    if (widget.tracks.isNotEmpty || widget.playlistId == null) return;
+    
+    setState(() {
+      _isLoading = true;
+      _error = null;
+    });
+    
+    try {
+      // Extract numeric ID from "deezer:123" format
+      String playlistId = widget.playlistId!;
+      if (playlistId.startsWith('deezer:')) {
+        playlistId = playlistId.substring(7);
+      }
+      
+      final result = await PlatformBridge.getDeezerMetadata('playlist', playlistId);
+      if (!mounted) return;
+      
+      // Go backend returns 'track_list' not 'tracks'
+      final trackList = result['track_list'] as List<dynamic>? ?? [];
+      final tracks = trackList.map((t) => _parseTrack(t as Map<String, dynamic>)).toList();
+      
+      setState(() {
+        _fetchedTracks = tracks;
+        _isLoading = false;
+      });
+    } catch (e) {
+      if (!mounted) return;
+      setState(() {
+        _error = e.toString();
+        _isLoading = false;
+      });
+    }
+  }
+
+  Track _parseTrack(Map<String, dynamic> data) {
+    int durationMs = 0;
+    final durationValue = data['duration_ms'];
+    if (durationValue is int) {
+      durationMs = durationValue;
+    } else if (durationValue is double) {
+      durationMs = durationValue.toInt();
+    }
+    
+    return Track(
+      id: (data['spotify_id'] ?? data['id'] ?? '').toString(),
+      name: (data['name'] ?? '').toString(),
+      artistName: (data['artists'] ?? data['artist'] ?? '').toString(),
+      albumName: (data['album_name'] ?? data['album'] ?? '').toString(),
+      albumArtist: data['album_artist']?.toString(),
+      coverUrl: (data['cover_url'] ?? data['images'])?.toString(),
+      isrc: data['isrc']?.toString(),
+      duration: (durationMs / 1000).round(),
+      trackNumber: data['track_number'] as int?,
+      discNumber: data['disc_number'] as int?,
+      releaseDate: data['release_date']?.toString(),
+    );
+  }
+
   void _onScroll() {
     final shouldShow = _scrollController.offset > 280;
     if (shouldShow != _showTitleInAppBar) {
@@ -211,15 +280,15 @@ class _PlaylistScreenState extends ConsumerState<PlaylistScreen> {
                     children: [
                       Icon(Icons.playlist_play, size: 14, color: colorScheme.onTertiaryContainer),
                       const SizedBox(width: 4),
-                      Text(context.l10n.tracksCount(widget.tracks.length), style: TextStyle(color: colorScheme.onTertiaryContainer, fontWeight: FontWeight.w600, fontSize: 12)),
+                      Text(context.l10n.tracksCount(_tracks.length), style: TextStyle(color: colorScheme.onTertiaryContainer, fontWeight: FontWeight.w600, fontSize: 12)),
                     ],
                   ),
                 ),
 const SizedBox(height: 16),
                 FilledButton.icon(
-                  onPressed: () => _downloadAll(context),
+                  onPressed: _tracks.isEmpty ? null : () => _downloadAll(context),
                   icon: const Icon(Icons.download, size: 18),
-                  label: Text(context.l10n.downloadAllCount(widget.tracks.length)),
+                  label: Text(context.l10n.downloadAllCount(_tracks.length)),
                   style: FilledButton.styleFrom(
                     minimumSize: const Size.fromHeight(48),
                     shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(24)),
@@ -249,10 +318,54 @@ const SizedBox(height: 16),
   }
 
   Widget _buildTrackList(BuildContext context, ColorScheme colorScheme) {
+    if (_isLoading) {
+      return const SliverToBoxAdapter(
+        child: Padding(
+          padding: EdgeInsets.all(32),
+          child: Center(child: CircularProgressIndicator()),
+        ),
+      );
+    }
+    
+    if (_error != null) {
+      return SliverToBoxAdapter(
+        child: Padding(
+          padding: const EdgeInsets.all(16),
+          child: Card(
+            color: colorScheme.errorContainer,
+            child: Padding(
+              padding: const EdgeInsets.all(16),
+              child: Row(
+                children: [
+                  Icon(Icons.error_outline, color: colorScheme.error),
+                  const SizedBox(width: 12),
+                  Expanded(child: Text(_error!, style: TextStyle(color: colorScheme.error))),
+                ],
+              ),
+            ),
+          ),
+        ),
+      );
+    }
+    
+    if (_tracks.isEmpty) {
+      return SliverToBoxAdapter(
+        child: Padding(
+          padding: const EdgeInsets.all(32),
+          child: Center(
+            child: Text(
+              context.l10n.errorNoTracksFound,
+              style: TextStyle(color: colorScheme.onSurfaceVariant),
+            ),
+          ),
+        ),
+      );
+    }
+    
     return SliverList(
       delegate: SliverChildBuilderDelegate(
         (context, index) {
-          final track = widget.tracks[index];
+          final track = _tracks[index];
           return KeyedSubtree(
             key: ValueKey(track.id),
             child: _PlaylistTrackItem(
@@ -261,7 +374,7 @@ const SizedBox(height: 16),
             ),
           );
         },
-        childCount: widget.tracks.length,
+        childCount: _tracks.length,
       ),
     );
   }
@@ -286,21 +399,21 @@ const SizedBox(height: 16),
   }
 
   void _downloadAll(BuildContext context) {
-    if (widget.tracks.isEmpty) return;
+    if (_tracks.isEmpty) return;
     final settings = ref.read(settingsProvider);
     if (settings.askQualityBeforeDownload) {
       DownloadServicePicker.show(
         context,
-        trackName: '${widget.tracks.length} tracks',
+        trackName: '${_tracks.length} tracks',
         artistName: widget.playlistName,
         onSelect: (quality, service) {
-          ref.read(downloadQueueProvider.notifier).addMultipleToQueue(widget.tracks, service, qualityOverride: quality);
-          ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(context.l10n.snackbarAddedTracksToQueue(widget.tracks.length))));
+          ref.read(downloadQueueProvider.notifier).addMultipleToQueue(_tracks, service, qualityOverride: quality);
+          ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(context.l10n.snackbarAddedTracksToQueue(_tracks.length))));
         },
       );
     } else {
-      ref.read(downloadQueueProvider.notifier).addMultipleToQueue(widget.tracks, settings.defaultService);
-      ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(context.l10n.snackbarAddedTracksToQueue(widget.tracks.length))));
+      ref.read(downloadQueueProvider.notifier).addMultipleToQueue(_tracks, settings.defaultService);
+      ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(context.l10n.snackbarAddedTracksToQueue(_tracks.length))));
     }
   }
 }
@@ -324,6 +437,18 @@ class _PlaylistTrackItem extends ConsumerWidget {
       return state.isDownloaded(track.id);
     }));
     
+    // Check local library for duplicate detection
+    final settings = ref.watch(settingsProvider);
+    final showLocalLibraryIndicator = settings.localLibraryEnabled && settings.localLibraryShowDuplicates;
+    final isInLocalLibrary = showLocalLibraryIndicator 
+        ? ref.watch(localLibraryProvider.select((state) => 
+            state.existsInLibrary(
+              isrc: track.isrc,
+              trackName: track.name,
+              artistName: track.artistName,
+            )))
+        : false;
+    
     final isQueued = queueItem != null;
     final isDownloading = queueItem?.status == DownloadStatus.downloading;
     final isFinalizing = queueItem?.status == DownloadStatus.finalizing;
@@ -344,17 +469,46 @@ leading: track.coverUrl != null
               ? ClipRRect(borderRadius: BorderRadius.circular(8), child: CachedNetworkImage(imageUrl: track.coverUrl!, width: 48, height: 48, fit: BoxFit.cover, memCacheWidth: 96, cacheManager: CoverCacheManager.instance))
               : Container(width: 48, height: 48, decoration: BoxDecoration(color: colorScheme.surfaceContainerHighest, borderRadius: BorderRadius.circular(8)), child: Icon(Icons.music_note, color: colorScheme.onSurfaceVariant)),
           title: Text(track.name, maxLines: 1, overflow: TextOverflow.ellipsis, style: Theme.of(context).textTheme.bodyLarge?.copyWith(fontWeight: FontWeight.w500)),
-          subtitle: Text(track.artistName, maxLines: 1, overflow: TextOverflow.ellipsis, style: TextStyle(color: colorScheme.onSurfaceVariant)),
-          trailing: _buildDownloadButton(context, ref, colorScheme, isQueued: isQueued, isDownloading: isDownloading, isFinalizing: isFinalizing, showAsDownloaded: showAsDownloaded, isInHistory: isInHistory, progress: progress),
-          onTap: () => _handleTap(context, ref, isQueued: isQueued, isInHistory: isInHistory),
+          subtitle: Row(
+            children: [
+              Flexible(child: Text(track.artistName, maxLines: 1, overflow: TextOverflow.ellipsis, style: TextStyle(color: colorScheme.onSurfaceVariant))),
+              if (isInLocalLibrary) ...[
+                const SizedBox(width: 6),
+                Container(
+                  padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 2),
+                  decoration: BoxDecoration(
+                    color: colorScheme.tertiaryContainer,
+                    borderRadius: BorderRadius.circular(4),
+                  ),
+                  child: Row(
+                    mainAxisSize: MainAxisSize.min,
+                    children: [
+                      Icon(Icons.folder_outlined, size: 10, color: colorScheme.onTertiaryContainer),
+                      const SizedBox(width: 3),
+                      Text(context.l10n.libraryInLibrary, style: TextStyle(fontSize: 9, fontWeight: FontWeight.w500, color: colorScheme.onTertiaryContainer)),
+                    ],
+                  ),
+                ),
+              ],
+            ],
+          ),
+          trailing: _buildDownloadButton(context, ref, colorScheme, isQueued: isQueued, isDownloading: isDownloading, isFinalizing: isFinalizing, showAsDownloaded: showAsDownloaded, isInHistory: isInHistory, isInLocalLibrary: isInLocalLibrary, progress: progress),
+          onTap: () => _handleTap(context, ref, isQueued: isQueued, isInHistory: isInHistory, isInLocalLibrary: isInLocalLibrary),
         ),
       ),
     );
   }
 
-  void _handleTap(BuildContext context, WidgetRef ref, {required bool isQueued, required bool isInHistory}) async {
+  void _handleTap(BuildContext context, WidgetRef ref, {required bool isQueued, required bool isInHistory, required bool isInLocalLibrary}) async {
     if (isQueued) return;
     
+    if (isInLocalLibrary) {
+      if (context.mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(context.l10n.snackbarAlreadyInLibrary(track.name))));
+      }
+      return;
+    }
+    
     if (isInHistory) {
       final historyItem = ref.read(downloadHistoryProvider.notifier).getBySpotifyId(track.id);
       if (historyItem != null) {
@@ -379,6 +533,7 @@ leading: track.coverUrl != null
     required bool isFinalizing,
     required bool showAsDownloaded,
     required bool isInHistory,
+    required bool isInLocalLibrary,
     required double progress,
   }) {
     const double size = 44.0;
@@ -386,7 +541,7 @@ leading: track.coverUrl != null
     
     if (showAsDownloaded) {
       return GestureDetector(
-        onTap: () => _handleTap(context, ref, isQueued: isQueued, isInHistory: isInHistory),
+        onTap: () => _handleTap(context, ref, isQueued: isQueued, isInHistory: isInHistory, isInLocalLibrary: isInLocalLibrary),
         child: Container(width: size, height: size, decoration: BoxDecoration(color: colorScheme.primaryContainer, shape: BoxShape.circle), child: Icon(Icons.check, color: colorScheme.onPrimaryContainer, size: iconSize)),
       );
     } else if (isFinalizing) {