feat(i18n): the server's closed English vocabularies named in the reader's language (E30 S2)

- lib/vocab + the `vocab` locale area: TMDB crew jobs and departments, auto-tags (D1 A: the data
  stays English, the catalog is named at its one source, useTags), built-in download profiles,
  YouTube topics; held key-for-key to the backend's own lists by backendIds.contract.
- Countries by ISO code: TMDB parse stores {code, name}; rows stored before are coded from TMDB's
  own country list in one request (run_enrich); Intl names them, historic codes (YU, SU, XI…)
  from the catalog.
- Player tracks named from the language tag, forced/SDH flags and codec tail, not Plex's
  server-language displayTitle; no invented "Audio N" on the server.
- Download lifecycle notices (shared / expiring / expired / evicted) named from data; the share
  notice carries the title.
- Scheduler: the job result rides along as data and is named per key (dashboard + run notice).
- Invite status named; a render crash's notice no longer shows the engine's English message.
- Fix: YouTube links …/wiki/Humour, the tagger looked for "Humor" — Comedy never came from a topic.

frontend/src/components/VideoInfoCard.tsx

@@ -10,6 +10,7 @@ import { PopoverSurface } from "./ui/AnchoredPopover";
 import { useAnchoredPopover } from "./ui/anchoredPopoverHooks";
 import { SURFACE } from "./ui/surfaces";
 import { Badge } from "./ui/Badge";
+import { useTags } from "../lib/useTags";
 
 // A video's details (E8·S3, decision D3): full (un-clamped) title, channel, views·duration·date, a
 // description snippet, and the channel's tags. E28 C1 moved it from a hover ⓘ on the thumbnail into
@@ -58,11 +59,7 @@ export default function VideoDetailsAt({
     enabled: !!video.channel_id,
     staleTime: 5 * 60_000,
   });
-  const { data: tags } = useQuery({
-    queryKey: qk.tags(),
-    queryFn: () => api.tags(),
-    staleTime: 5 * 60_000,
-  });
+  const { data: tags } = useTags({ staleTime: 5 * 60_000 });
 
   // The channel's tags (`tag_ids`), in the channel's own id order, resolved to names via the tag list.
   // These are the channel-tags the channel actually carries; an unknown id (a just-deleted tag) drops.