- Move Local Library section below Playlists in sidebar (Qobuz is main B.U.)
- Replace text input with native XDG folder picker dialog
- Add bit_depth and sample_rate to LocalAlbum model
- Display rich audio specs in album detail view (format, bit depth, sample rate, channels)
- Show format quality badge on album cards (e.g. "FLAC 24/96")
- Add Hi-Res visual indicator for 24-bit or >48kHz content