Critical fixes:
- Remove empty setState() in debug_log_screen.dart
- Add disposed flag to sleep_timer_provider.dart to prevent
notifyListeners() after dispose
High priority fixes:
- Convert .then() chains to async/await for better error handling
in playlist_details_screen.dart, album_details_screen.dart,
expandable_player.dart, player_reveal_overlay.dart,
queue_panel.dart, and all card widgets
- Extract _loadHintSettings() and _fetchAuthorImage() methods
Also includes:
- CODEBASE_AUDIT_REPORT.md with comprehensive audit findings
Tested on device - no regressions.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>