Episode tiles were keyed by season/episode index only, so switching
series reused the DOM: text bindings updated but <video> elements were
kept, and browsers ignore patched <source> children without load() —
the previous series' reels kept playing.
- Key SeriesFullView by item id so a series switch fully remounts it.
- Include a seriesIdentity (id, else root_id+title) in episode tile
keys so tiles/videos remount even on an in-place series swap.
- Reset episode cursor, audio owner and preview startup timers when
the series identity changes, and re-gate video mounting.
LeoVasanko
c41504e70c