Operator's model: offline, surface the cache-backed pools right
where the (now play-disabled, S4a) system playlists sit, so Home
still has something to play.
- ShuffleSource gains recentlyPlayed() (cache by lastPlayedAt desc,
liked included) and liked() (cache ∩ liked set); shared _refs()
materializes ordered ids from cached_tracks/artists/albums.
Shuffle-all reuses the same recency walk.
- Home Playlists row: when offlineProvider is true, prepend two
tiles — "Recently played" / "Liked" — sized to PlaylistCard.
Tap → shuffle+play that pool from cache; empty → snackbar.
System tiles still render (play disabled per S4a) beside them.
- offline=false (online + all widget tests) → no extra tiles;
placeholder-count tests unaffected.
Closes the S4 thread of the #427 umbrella (S4a + S4b).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Query-builder methods come through the generated AppDb, not the
drift package directly — the import was dead. (#427 S4a)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Headline of S4. "Shuffle all" is always present (home app-bar
shuffle icon); the pool degrades with reachability:
- online → GET /api/library/shuffle?limit=N (new): N random
library tracks server-side, per-user quarantine filtered
(ListRandomTracksForUser, ORDER BY random()).
- offline → ShuffleSource shuffles the whole local cache index
(audio_cache_index ∩ cached_tracks, names from cached_artists/
albums) — a UNION over liked AND recently-played, since the
two-bucket split is storage-only and never filters playback.
Offline gating: refreshable (singleton) system playlists need the
live build/shuffle endpoints, so their tile play is disabled when
offlineProvider is true — Shuffle all is the offline path. User
playlists still play from cache.
playlist_card now reads offlineProvider in build → wrapped the
direct-render widget test in ProviderScope (offlineProvider is
smoke-safe from S1: tracked timers, no connectivity mount).
S4b (offline Recently-played / Liked browsable surfaces over the
cache index) next.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
bvandeusen