- Interleave Trakt movies/shows by rank so the mixed row shows both types
instead of burying all series past the display limit.
- Treat any Trakt sub-fetch failure as fatal (errors.Join) so a partial
result never overwrites the last-good snapshot with a media type missing.
- Skip non-title entries (TMDB trending/all returns media_type "person") in
both ID batching and ordering so they can't match an unrelated library title.
- Guard the refresh task against a nil refresher.
- Tests: person skip, Trakt interleave, Trakt partial-failure preserves
last-good, snapshot read error propagation.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
