Last capture piece, schema v3 (new people + credits tables; CREATE IF NOT EXISTS
migrates existing DBs on restart, no wipe):
- people deduped by tmdb_id; credits link to exactly one movie OR show (separate
nullable FKs + CHECK, no polymorphic id) with department/job/character/order.
- TMDB client appends credits to the detail call (free) and parses cast (name,
character, photo, billing order) + headline crew (directors/writers/creators).
- enrichment_apply backfills cast/crew gap-only (never clobbers); show/movie
detail return cast + crew. Populates on view via the existing lazy refresh-art.
- Cast & Crew section on the detail page: grouped crew line + a horizontal
cast row with circular TMDB headshots, names, characters (accent hover).
Seam tests: TMDB credit parse (+ job filtering, created_by), backfill + people
dedup across titles, gap-only no-clobber, payload shape.
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