Give the video side its OWN server connection — pre-filled from music but stored
separately in video.db, fully isolated (video never writes music config/state).
- Effective config helpers (video_plex_config / video_jellyfin_config): video's
own creds when set, else inherited read-only from music. resolve_video_server +
_build_source + watch-link/poster/dashboard all use these (own db threaded in).
- Server Connection UI mirrors music's server picker (toggle = select + configure),
scoped to Plex/Jellyfin, at the bottom of the Connections tab.
- Jellyfin: independent client built from video's creds; explicit USER picker like
music (list users → that user's libraries); honors the pick, admin fallback.
- Honest connection diagnostics (reachable vs 401 vs no-users) instead of a vague
"auth failed".
- Auto-save on change with toasts; the shared Save button is intercepted on the
video side so it saves video settings (and can't fire a music save).
- Enrichment status now PUSHES over the socket like music (no browser polling /
access-log flood); config save only rebuilds workers when an API key changed.
- Seam tests for effective-config inheritance/override + isolation guard.