A collection's Play-all/Shuffle queue held only playable leaves
(movies/episodes), filtering out shows — so on a show-collection the queue
was empty and Play-all was hidden/dead. Build the queue by expanding each
show member into its episodes (season then episode order), concatenated in
member order; leaves still queue as themselves. Shows are fetched lazily on
click (parallel plexShow fetches), not on page load. Gate Play-all/Shuffle
and the poster on "has any playable member" (leaves OR shows), and disable
them while the queue builds. Scope: option A — no member manual-order
migration. Adds plex.collection.playFailed (HU/EN).
peter
06b85586e6