- Merge SeerrMovieDetails/SeerrTvDetails into one SeerrDetails model and
route both detail endpoints through a single request helper.
- Replace the three parallel tracker session/store/rebind-generation
triples in TrackersProvider with a _TrackerSlot record plus one _rebind
path.
- Fold the three JellyfinSequentialLauncher entry points onto a shared
_launchLocalQueue helper that owns loading, abort, shuffle and publish;
each caller now supplies only its fetch.
Drops dead code across services, models, utils and widgets, including the
connection auth service, which had no implementer, and the Live TV DVR
provisioning models, which had no caller.
Tests that only covered deleted behaviour are removed or trimmed. No
behaviour change.
edde746