Fifth/final service. Keyless, movies + shows, on by default → toggle in the
'Community Data (No Key)' frame.
- WikidataWorker: two-step lookup — find the entity by IMDb id (haswbstatement P345)
then read its official website (P856); stores wikidata_url. Registered in
build_backfill_workers.
- DB: wikidata_url/status/attempted on movies + shows + _BACKFILL/_BACKFILL_COLS;
both detail payloads return wikidata_url.
- config GET/POST wikidata_enabled; manager orb (green 🔗) + status poll; detail page
'Official Site' link badge alongside IMDb/TMDB/TVDB.
- 3 new tests (incl. the two-step fetch) + fixed-set/config assertions.
34 backfill tests green, ruff clean. All five new services (Trakt, TVmaze, AniList,
DeArrow, Wikidata) now have the full worker/DB/connections/orb/manager/detail parity.
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