fix: duration display, audio quality from file, artist verification, metadata case-sensitivity, settings navigation freeze

- Fix duration showing incorrect values (ms to seconds conversion)
- Read audio quality from FLAC file instead of trusting API
- Add artist verification for Tidal/Qobuz/Amazon downloads
- Fix FLAC metadata case-insensitive replacement
- Fix settings navigation freeze on Android 14+ (PopScope handling)

lib/providers/track_provider.dart

@@ -266,7 +266,7 @@ class TrackNotifier extends Notifier<TrackState> {
       albumArtist: data['album_artist'] as String?,
       coverUrl: data['images'] as String?,
       isrc: data['isrc'] as String?,
-      duration: data['duration_ms'] as int? ?? 0,
+      duration: ((data['duration_ms'] as int? ?? 0) / 1000).round(),
       trackNumber: data['track_number'] as int?,
       discNumber: data['disc_number'] as int?,
       releaseDate: data['release_date'] as String?,
@@ -282,7 +282,7 @@ class TrackNotifier extends Notifier<TrackState> {
       albumArtist: data['album_artist'] as String?,
       coverUrl: data['images'] as String?,
       isrc: data['isrc'] as String?,
-      duration: data['duration_ms'] as int? ?? 0,
+      duration: ((data['duration_ms'] as int? ?? 0) / 1000).round(),
       trackNumber: data['track_number'] as int?,
       discNumber: data['disc_number'] as int?,
       releaseDate: data['release_date'] as String?,