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.
Guest switch dispatch pre-marked its dedup key and fired-and-forgot, so
any failure (fetch error, reload busy with an auto-advance, navigation
race with the host exiting) silently stranded the guest on the old media.
A CurrentPlaybackDispatcher now marks a key handled only after the sink
reports success against the committed identity, with a serialized
in-flight slot, timeout, and generation reset; the reconciler re-offers
unattached media on every host heartbeat, making the heartbeat the retry
channel. Fetches that outlive their dispatch are re-validated against the
current snapshot so a stale switch can't override the live one.
hostExitedPlayer now rides the controller's ordered message queue with
host authentication instead of racing state handling in the provider.
Adds context.withFreshWatchState/readFreshWatchState and sweeps the
remaining session-critical readers: context menu actions, folder tree
rows, discover hero, and TV spotlight minutes-left.
Cards consult the hierarchy-aware store so container marks flip episode
rows instantly and a stale per-episode patch can no longer shadow a newer
show/season mark; playback opens with the session-fresh resume offset.
edde746