- Add Deezer API client (no auth required, rate limit per user IP)
- Add search source selector in Settings (Deezer/Spotify)
- Default to Deezer for better reliability
- Auto-fallback to Deezer when Spotify API is rate limited (429)
- Support fallback for tracks and albums via SongLink API
- Update README with metadata source documentation
- Version 2.1.5-preview (build 42)