Prefer history hashes filtered by library folder key, then exact folder-key
match only (no sequel prefix hits). Refuse ambiguous multi-matches. Ignore
partial file-delete events. Best-effort Jellyfin library refresh after purge.
Stock Seerr only drops the request row; intercept DELETE /api/v1/request/:id
to cascade media file delete (*arr + purge hooks) before removing the request.
Hardlink-safe cleanup: Seerr/Jellyfin/*arr deletes remove library files and
qB torrents via purge hooks and media-purge-watch. Indexers get seed ratio/time
so completed downloads can leave torrents/. Upgrade always re-wires services;
drop user-facing config sync. Live e2e covers Radarr, Seerr, and Jellyfin APIs.
