AlbumCard / ArtistCard / PlaylistCard gain a 44dp circular play
button overlaid bottom-right of the cover art. Mirrors the
hover-revealed .play-overlay on the web cards; always visible
because hover is not a real interaction on touch.
Per-card semantics match the web:
- AlbumCard: fetches /api/albums/{id}, starts playback from track 0.
- ArtistCard: fetches /api/artists/{id}/tracks, Fisher-Yates shuffles,
plays from index 0 (matches web's playQueue(shuffle(tracks), 0)).
- PlaylistCard: fetches /api/playlists/{id}, materializes available
rows into TrackRef, plays from index 0. Disabled state when
trackCount == 0 — semi-transparent button, taps ignored.
Shared PlayCircleButton widget manages loading state (spinner during
fetch) so each card's onPressed can stay async without re-entrancy
guards. Cards become ConsumerWidget so they can reach the
playerActionsProvider + relevant API providers; constructor surface
unchanged so existing call sites (artist_detail, library_screen,
home_screen) keep working.
CompactTrackCard unchanged — its tap already plays-from-here.
For #393 / #356 umbrella.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
bvandeusen
872b0de304