A single personalized wall aggregating TMDB recommendations across many of your owned titles
(random_owned_titles seeds), ranked by consensus — a title recommended by more of your library
ranks higher (ties by rating then popularity), owned + seed titles excluded.
- core/video/discovery_recs.py: pure blend_recommendations (dedup/consensus/exclude), 7 tests.
- /api/video/discover/foryou aggregates ~12 seeds' recommendations.
- loadForYou() prepends the 'Recommended for you' rail on top of the stack; re-runs on the
hide-owned toggle.
