Tapping Instant Mix on Plex often did nothing: the /playQueues POST used no
endpoint failover, createPlayQueue swallowed every error into null,
fetchInstantMix mapped that to an empty list, playInstantMix returned
silently on empty tracks, and the errors stream's only listener is the
now-playing screen, which is not mounted at tap time (#2141).
The play-queue POST now rides the shared endpoint failover (replaying it is
safe: an orphaned duplicate queue on the server is inert), createPlayQueue
and fetchInstantMix propagate typed errors, playInstantMix reports
started/empty/superseded and throws fetch failures, and the tap site shows
a translated snackbar for a failed or empty mix. A failed collection or
playlist queue launch now also reaches the real failure snackbar instead of
the misleading "no items" path.
MemoryLogOutput extended LogOutput but was never wired as a Logger output (storage happens in the printer); DeletionNotifier/WatchStateNotifier's forServer/forItem filtered streams and WatchStateEvent.mediaType had no production consumers (tests now filter .stream directly); context.hiddenLibraries/profileSettings and toPlexUrl had zero call sites; MonoTokens.splashFactory was never read; OptimizedMediaImage's enableTranscoding/cacheKey chains, FocusableMediaCard.width/height/forceGridMode, TvBrowseRail's constant-zero gap functions, and media_image_helper's scaleFactor were never varied by any caller. The sha1 LRU stays (rebuild-hot artwork URLs); TvRailTrailing.none and the mono-theme copyWith stay live (lerp delegates to copyWith). Also carries the MusicPlayContext.id argument drops in the music screens and remaining sweep test updates.
The audio-playlist play flow, the playlist download flow (including its inline MediaItem synthesis), the delete-with-confirm flow, and the fetch-artist-then-navigate flow each existed twice — once in MediaContextMenu and once in the playlist/album/now-playing screens, with 'Match PlaylistDetailScreen' comments standing in for shared code. They now live in music_navigation.dart and download_utils.dart with per-caller strings preserved; the menu's collection/playlist download handlers fold into one parameterized handler, its duplicated sync/download menu tree is built once, and the generic picker dialogs move to collection_picker_dialog.dart (pure move).
Deduplicates the hand-rolled coalescing/caching maps, the Plex client cast,
the missing-serverId event guard and the progress-failure backoff, and drops
the MusicPlaybackService availability gate, which could never fail in
production.
Introduces shared seams for paginated views, D-pad reorder, media control
routing, async singletons and the device method channel, then points the
open-coded copies at them.
Also removes unused models and duplicated provider/server plumbing, folds
the twice-implemented artifact store in the server, and factors the
repeated Flutter toolchain prologue in CI into a composite action.
Un-gates music libraries; adds CardShape.square plumbing (circular
artists), artists/albums/tracks browse groupings with per-grouping
sorts, audio playlists tab, artist + album detail screens with dpad
track rows, music context-menu actions, and a stub MusicPlaybackService
seam for the upcoming engine.
edde746