- PlexBrowse.tsx: self-contained Plex mode (library scope tabs, own search +
sort, poster-card grid with watch state + playability tint, paged; show →
seasons/episodes drill-down). Playback announces (P2 wires the real player).
- Feed source dropdown gains a 'Plex' option (gated on me.plex_enabled); App
swaps <Feed> for <PlexBrowse> when librarySource==='plex' so the video-feed
hooks don't run in Plex mode. me exposes plex_enabled.
- api client (plexLibraries/plexBrowse/plexShow/plexImageUrl) + types; librarySource
union + share-URL restore gain 'plex'; new plex i18n namespace en/hu/de.
- Verified over HTTP (authed): libraries, browse+FTS, image proxy 200 image/jpeg.
