E5 S5: enriched Plex detail page (ratings + facts + keywords + crew)

Consumes the TMDB block the S2 engine already persists + serves (movie/show
detail's `tmdb`), turning the movie info page into a Seerr-style enriched detail
(page variant only — the player overlay stays lean):

- Multi-source ratings row: IMDb (links out) · TMDb (with vote count) · Plex
  audience — whichever are present. Only the primary score (IMDb, else audience)
  carries the ratingMin filter, mirroring the backend rating column.
- Facts panel: release · runtime · cert · budget · revenue · studios · countries.
- Keyword chips → tap to filter the library. Backend: a new `keywords` filter on
  LibraryFilters + meta_filter_conds (`keywords @> [kw]`, both models), wired
  through PlexFilters (appendPlexFilters / plexFilterCount / active-chip / clear).
- Full crew (TMDB key-crew) → tap a name to open their person page.

Tests: test_plex_keyword_filter.py (3) + PlexInfo.dom.test.tsx (5, incl. the
overlay-stays-lean guard). New i18n plex.info.facts.* / keywords / crew / audience
(en+hu). Gate: vitest 337, backend lane 396.

frontend/src/lib/api/plex.ts

@@ -54,6 +54,28 @@ export interface PlexCard {
   show_id?: string | null; // episode: the show's rating_key (for grouping a playlist by show/season)
   summary?: string | null; // movie/show hover-overview synopsis (trimmed) + episode summary
 }
+// TMDB enrichment block (E5 S2), served from OUR DB (never a live TMDB call) on a movie/show detail.
+// null until the row has been enriched. Powers the S5 enriched detail page: multi-source ratings row,
+// facts sidebar, keyword chips (→ filter), and the full crew.
+export interface PlexTmdbCrew {
+  name: string;
+  job: string;
+  tmdb_id?: number | null;
+  profile_path?: string | null; // raw TMDB path — we don't proxy crew headshots, so name+job only
+}
+export interface PlexTmdb {
+  tmdb_id?: number | null;
+  rating?: number | null; // TMDb user score (0–10)
+  vote_count?: number | null;
+  budget?: number | null; // USD, movies only
+  revenue?: number | null; // USD, movies only
+  keywords: string[];
+  crew: PlexTmdbCrew[];
+  studios: string[];
+  production_countries: string[];
+  recommendations: { tmdb_id?: number | null; title?: string | null; in_library: boolean }[];
+  backdrops: string[];
+}
 // Unified cross-library browse (movies + shows mixed). `episodes` is populated only on a search that
 // also matches episodes (the grouped "Episodes" section).
 export interface PlexUnifiedResult {
@@ -98,6 +120,7 @@ export interface PlexShowDetail {
     first?: PlexCard | null;
     episode_count: number;
     collection_keys: string[];
+    tmdb?: PlexTmdb | null;
   };
   seasons: PlexSeasonDetail[];
   related: PlexCard[];
@@ -149,6 +172,7 @@ export interface PlexItemDetail {
   // `source` buckets the strip so each type can be shown/hidden independently on the info page:
   // "collection" (genuine franchise), "imdb"/"tmdb"/"tvdb"/"trakt" (external auto-lists), "smart".
   collections?: { id: string; title: string; source: string; items: PlexCard[] }[];
+  tmdb?: PlexTmdb | null; // movies only (episodes aren't enriched)
 }
 export interface PlexCollection {
   id: string;
@@ -205,6 +229,7 @@ export interface PlexFilters {
   actors: string[]; // OR (any) by default, or AND (all) via actorMode
   actorMode?: "any" | "all"; // how multiple actors combine (default any = OR)
   studios: string[]; // OR — from any selected studio
+  keywords: string[]; // AND — TMDB keyword chips from the detail page (E5 S5)
   collection?: string | null; // a single Plex collection (rating_key)
   collectionTitle?: string | null; // its title, for the active-filter chip
 }
@@ -214,6 +239,7 @@ export const EMPTY_PLEX_FILTERS: PlexFilters = {
   directors: [],
   actors: [],
   studios: [],
+  keywords: [],
 };
 export function plexFilterCount(f: PlexFilters): number {
   return (
@@ -226,6 +252,7 @@ export function plexFilterCount(f: PlexFilters): number {
     f.directors.length +
     f.actors.length +
     f.studios.length +
+    f.keywords.length +
     (f.collection ? 1 : 0)
   );
 }
@@ -246,6 +273,7 @@ function appendPlexFilters(u: URLSearchParams, f: PlexFilters): void {
   if (f.actors?.length) u.set("actors", f.actors.join(","));
   if (f.actorMode === "all") u.set("actor_mode", "all");
   if (f.studios?.length) u.set("studios", f.studios.join(","));
+  if (f.keywords?.length) u.set("keywords", f.keywords.join(","));
   if (f.collection) u.set("collection", f.collection);
 }
 export interface PlexFacets {