Replaces the silent gap where there was no UI to like anything.
Now the Liked tab can actually grow from in-app actions, not just
from the /api/likes/ids sync seed.
New:
- shared/widgets/LikeButton.kt — heart toggle composable.
Caller-owned state: (liked: Boolean, onToggle: () -> Unit).
Tinted with M3 primary slot on liked, onSurfaceVariant on
unliked — tracks the light/dark theme without per-mode branches.
Modified:
- library/ui/AlbumDetailViewModel.kt — injects LikesRepository;
exposes `albumLiked: StateFlow<Boolean>` (observeIsLiked for the
album) + `likedTrackIds: StateFlow<Set<String>>` (observeLikedTracks
mapped to a Set for O(1) row-level lookup). `toggleLikeAlbum()` +
`toggleLikeTrack(id)` route through the repo's optimistic-write +
MutationQueue path.
- library/ui/AlbumDetailScreen.kt — LikeButton on the header next
to the cover/title block, LikeButton on every track row after
the duration. Track row vertical padding tightened from 12dp →
8dp to give the heart breathing room.
- library/ui/ArtistDetailViewModel.kt — injects LikesRepository;
exposes `artistLiked: StateFlow<Boolean>` + `toggleLikeArtist()`.
- library/ui/ArtistDetailScreen.kt — LikeButton on the header
between the name column and Play button.
PlaylistDetail per-track likes follows in a small follow-up — same
pattern, just hadn't been integrated yet.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
bvandeusen
7dfe6f1b69