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/plexViews.tsx

@@ -57,6 +57,7 @@ import { Chip } from "./ui/Chip";
 import { Pressable } from "./ui/Pressable";
 import { SURFACE } from "./ui/surfaces";
 import { PageHeading } from "./ui/Headings";
+import { vocab } from "../lib/vocab";
 
 // The Plex sub-router's view branches, split out of PlexBrowse. Each is invoked by PlexBrowse with
 // shell callbacks as props (onBack/onPlay/onFilter/…) — no view reaches back into the shell's state,
@@ -243,7 +244,9 @@ export function PlexPersonView({
               <div className="min-w-0 flex-1">
                 <PageHeading className="text-xl font-semibold">{d.name}</PageHeading>
                 {d.known_for_department && (
-                  <p className="text-xs font-medium text-accent">{d.known_for_department}</p>
+                  <p className="text-xs font-medium text-accent">
+                    {vocab(t, "department", d.known_for_department)}
+                  </p>
                 )}
                 <p className="mt-1 mb-2 text-xs text-muted">
                   {t("plex.person.credits", { movies: d.movies.length, shows: d.shows.length })}