Season selection is now switchable via a view toggle (persisted): poster RAIL
(scrollable season cards w/ coverage), TIMELINE band (segments sized by episode
count, filled by owned), TABS (pills), and the LIST dropdown. All drive the same
selection; episodes fade in on change.
- Watchlist button is now REAL: toggles shows.monitored via POST /api/video/monitor
(set_monitored), reflects 'In Watchlist' state. show_detail returns monitored.
- 'Get Missing' + a 'Missing only' toolbar toggle filter the episode list to
unowned episodes (actual downloading is the future acquisition subsystem).
Seam tests for the monitor endpoint + bad-input guards; shell hooks updated.
c450fa1f9a