- Add SQLite database for download history with O(1) indexed lookups
- Add in-memory Map indexes for O(1) getBySpotifyId/getByIsrc
- Automatic migration from SharedPreferences on first launch
- Fix PaletteService to use PaletteGenerator (isolate approach didn't work)
- Use small image size (64x64) and limited colors (8) for speed
- Add caching to avoid re-extraction
- All screens now use consistent PaletteService
- Update CHANGELOG with all v3.2.0 changes
zarzet