Since a1b6a8971 only the selected sidecar attached at open, so mpv's
track-list carried one external subtitle and the track sheet could only
offer the rest as primary source switches - tap-and-hold on a
non-selected external track selected it as primary instead of secondary.
Real external files are cheap static fetches, so Jellyfin, Plex direct
play, and offline discovery now mark them preload and they ride along in
sub-files at open, keeping every external track selectable as a
secondary subtitle without a reopen. Embedded rows extracted on a
transcode stay lazy: extraction can stall behind the transcoder, which
is exactly what used to trip the sidecar open guard.
close#1860
Extracts the repeated toolbar fade into a single ToolbarScrim widget, folds
duplicated request/retry handling in the media server HTTP client, and
collapses the parallel playback-source, download-manager and live TV helper
paths into shared implementations.
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.
edde746