Flutter: bump connectivity_plus, device_info_plus, share_plus, receive_sharing_intent, path_provider, flutter_local_notifications to latest stable. Revert file_picker from 12.0.0-beta to 11.0.2 stable and migrate pickFile (singular) to pickFiles. Add win32 ^6.0.1 dependency_overrides to resolve the win32 5 vs 6 conflict between file_picker stable and device_info_plus (Windows-desktop-only transitive dep, not used on mobile targets). Go: update goja, golang.org/x/mobile, golang.org/x/tools, regexp2/v2 to latest.
Bump riverpod, go_router, sqflite, permission_handler, ffmpeg_kit, flutter_local_notifications, json_annotation and riverpod_generator/lint to stable; refresh go.mod/go.sum via go get -u.
- Add ProGuard rules for Flutter plugins (path_provider, local_notifications, receive_sharing_intent, etc.)
- Upgrade Go to 1.25.6 for 16KB page alignment support
- Expand ProGuard rules for Go backend and Kotlin coroutines
- Fix R8 stripping plugin implementations in release builds
- Add extension manager, manifest, runtime, providers, settings
- Add extension provider and UI pages (extensions, detail, priority)
- Add download service picker widget
- Add metadata provider priority page
- Add source field to Track model for extension tracking
- Add skipBuiltInFallback manifest option to skip built-in providers
- Update download queue to use source extension first
- Add extension upgrade support without data loss
zarzet