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.
Album/artist downloads expand to tracks with pinned parent metadata,
aggregate progress, container deletes with reference-counted album
covers, and a Music tab on the downloads screen with fully offline
album playback. Home rows include music libraries (fixes plex hub
items being filtered to video types) and audio playlists join
download/sync rules.
Plain Play requests the default media version (index 0 or the saved
preference), but the offline resolvers rejected the single downloaded
row when a non-default version was downloaded, then threw "No video
URL available" with no client to fall back to.
Three-part fix sharing one matcher (downloadedVersionMatches):
- getPlaybackData falls back to the downloaded version when there is no
client to stream from; the result now carries the effective
mediaIndex/mediaSourceId so cached media info and the committed
session describe the file actually played.
- navigateToVideoPlayer seeds the selection from the download record
for isOffline plays with no explicit version, covering the external
player branch and offline-library plays with a reachable server.
- PlaybackSession.fromContext prefers the result source id over the
requested one, keeping in-player state in sync after a fallback.
Online pinning is untouched: with a live client an explicitly requested
non-downloaded version still streams from the server.
The aired-order rework can sweep correctly-placed Specials into "download
next N"; this toggle lets users opt out. Shown only for whole shows
(reusing FocusableSwitchListTile via an optional toggle on the shared
option-picker dialog), remembered across opens via a BoolPref
(default on = unchanged behavior). Filters Specials at the single
collect choke point (_collectPlayable), with a guard so explicitly
downloading the Specials season still queues its episodes.
Rounding the smoothed per-episode progress could fill the ring to 100% while a download was still finishing; only report 100% once every queued episode is complete. Also drop the stale episode-count diagnostic log that read leafCount/_totalEpisodeCounts solely for logging after the denominator change.
Progress ring now measures completion against the episodes actually queued (episodes.length) instead of the show's full leafCount, and advances smoothly using per-episode progress. The completed show/season download button reopens the download-options dialog (with a Delete row) so users can fetch more episodes or switch to sync instead of only deleting.
edde746