- adapters: overviewLanguages() limits overview/tagline chain to Chinese
variants (zh-CN→zh-SG→zh-TW→zh-HK); titles keep full chain; season
supplement fetch skips languages useless for overview
- setting metadata.overviewNonChineseFallback (default off) + UI switch
- media detail shows "暂无简介" for empty entity/episode overview
- scripts/overview-recompute.ts: recompute stored non-Chinese overviews
from kv_cache only (no TMDB requests), dry-run by default, --apply
- tests: chain unit tests, Heart Signal (103147) fixture, server
recompute test, MP differential for episode overview
- runbook + CHANGELOG
Co-Authored-By: Claude Opus 5.5 <[email protected]>
