Move PCM beat analysis and spectrum cutoff estimation to cancellable Rust workers with the existing algorithms and isolated Dart fallbacks. Keep visual rendering and playback behavior unchanged.
Port the pinned Material quantizer and Dart RNG compatibility to Rust while keeping Material Score and final color schemes in Dart. Include exact palette fixtures, licenses, and Kotlin worker ABI coverage.
Handle feature and featured separators across display, Android finalization and Rust tag writing. Split conjunction credits only when separate artist IDs confirm them, and offer a picker for multi-artist navigation.
Native tag writers accept artist_tag_mode=primary and keep only the first credited artist in ARTIST and ALBUMARTIST for every format: FLAC download embedding, FLAC/Opus edits, and the ID3, MP4, APE and RIFF writers. The Android finalizer's FFmpeg fallback applies the same rule.
Rust and Kotlin share one separator set (comma, semicolon, ampersand, a spaced x, feat/ft/featuring/with) and test the same fixtures. The Go-parity split_vorbis pattern is unchanged. Refs #618.
Keep automatic Hi-Res replacement off by default. Require exact full-duration PCM equivalence across every channel before and after processing. Retain the original through publication and history persistence, restore it on failure or cancellation, and bound WAV format parsing.
Validated with 30 Rust tests, 46 Dart tests, clean analyzer/Clippy checks, Android ARM64 and iOS builds, and iOS simulator startup.
Introduce a per-file Hi-Res authenticity checker and optional auto re-download for flagged fake Hi-Res downloads. Adds Rust checker modules (fft, evidence, FLAC/WAV decoding, tests) and a mobile API (check_hires_authenticity). Wire platform bindings for Android/iOS and PlatformBridge. Add Dart HiResCheckService, UI HiResCheckCard, settings toggle (redownloadFakeHiRes) and integration in the download pipeline to quarantine and replace suspicious files with LOSSLESS when safe. Adds claxon FLAC dependency.
Preserve romanization and translation metadata through Rust exports and cache, match rounded line times, and retain word endings. Highlight romanization with the main lyric clock in Material and Mornye.
Clear selection overlay ownership safely when collection screens are disposed. Add parser, rendering, cache and overlay lifecycle regression coverage.
Consume superseded picture blocks with a bounded 64 KiB buffer instead of retaining them in memory. Preserve other blocks, audio, EOF behavior and metadata limits while checking cancellation between reads.
Cover rewrite/enrichment output parity, retained artwork, truncated input, cancellation before writes and block-count limits.
Write JPEG resize output directly into RGB and release the original decoded image before encoding. Preserve PNG alpha handling and existing image quality.
Verified byte-identical output for 336 image fixtures and lower isolated peak heap allocation.
Replace the Go backend with the Rust workspace and route Android/iOS through
UniFFI bindings. Include the migrated extension runtime, network, providers,
media metadata, downloads and library operations, with version 5.0.0+147.
Remove Go sources, adapters, native build selection and CI dependencies.
Build Rust unconditionally and lock the iOS Rust pod using a relative path.
Retain legacy source and migration evidence in a local ignored archive.
Validation: Android Kotlin compile and 53 native tests; Swift Rust-branch
equivalence and syntax; CocoaPods install; workflow, shell, Ruby, plist and
diff checks. Reuse the preceding 100 Rust tests, fmt/Clippy and five-ABI
build checkpoint; no new APK or iOS application build for this cleanup.
Known follow-up: URL/URLSearchParams globals are missing from the Rust JS
runtime. A controlled extension replay confirms a URL-resolution regression;
this commit does not fix that runtime gap.
zarzet