Replaces the ArtistDetail-route ComingSoon stub with the real artist
view. Mirrors `flutter_client/lib/library/artist_detail_screen.dart`.
New:
- models/ArtistDetailRef.kt — ArtistRef + albums pair.
- library/ui/ArtistDetailViewModel.kt — VM + UiState. `playArtist()`
fires GET /api/artists/{id}/tracks and dumps the whole list into
the player queue (`source = "artist:$id"`). Errors are silent for
now — the play button has no inline error affordance.
- library/ui/ArtistDetailScreen.kt — Scaffold + back-button AppBar.
Header is a full-width LazyVerticalGrid spanning row with
circular avatar + name + album count + Play button; below it,
the albums tile out as an adaptive 176dp grid using the existing
AlbumCard.
Modified:
- library/data/LibraryRepository.kt — refreshArtistDetail now
returns ArtistDetailRef (mirroring AlbumDetail). Adds
fetchArtistTracks() for the Play button.
- nav/MinstrelNavGraph.kt — ArtistDetail route renders the real
screen; drops the now-unused androidx.navigation.toRoute import
(all detail routes use SavedStateHandle.toRoute via the VM now).
Closes Phase 12. Like buttons on detail headers + per-track + shuffle
mode on the player are open follow-ups but don't block MVP nav.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
bvandeusen
de1175c478