refactor(portals): drop the normalized tmdbId that proved nothing

`NormalizedVodMeta.tmdbId` existed only to gate the year chip, and its
comment claimed a numeric `tmdb_id` proved enrichment had run. That test
was wrong — the provider field is `number | string` — so the gate moved
to the navigation target and the field lost its last consumer. Removing
it beats re-documenting it: a field that survives with a false guarantee
in its doc comment is how the rejected gate gets reintroduced.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

libs/shared/interfaces/src/lib/vod-details-adapters.ts

@@ -32,9 +32,6 @@ export function normalizeXtreamVod(item: XtreamVodDetails): NormalizedVodMeta {
         tmdbCast: info?.tmdb_cast,
         tmdbDirectors: info?.tmdb_directors,
         tmdbRecommendations: info?.tmdb_recommendations,
-        // Provider payloads carry tmdb_id as an untrusted string too; only
-        // a merge-written number proves an enrichment match
-        tmdbId: typeof info?.tmdb_id === 'number' ? info.tmdb_id : undefined,
         tmdbGenres: info?.tmdb_genres,
         tmdbCountries: info?.tmdb_countries,
     };
@@ -67,7 +64,6 @@ export function normalizeStalkerVod(item: StalkerVodDetails): NormalizedVodMeta
         tmdbCast: info?.tmdb_cast,
         tmdbDirectors: info?.tmdb_directors,
         tmdbRecommendations: info?.tmdb_recommendations,
-        tmdbId: info?.tmdb_id,
         tmdbMediaType: info?.tmdb_media_type,
         tmdbGenres: info?.tmdb_genres,
         tmdbCountries: info?.tmdb_countries,

libs/shared/interfaces/src/lib/vod-details-item.interface.ts

@@ -92,8 +92,6 @@ export interface NormalizedVodMeta {
     tmdbDirectors?: TmdbEnrichedCastMember[];
     /** TMDB recommendations (drives the cross-portal "Similar" rail) */
     tmdbRecommendations?: TmdbRecommendation[];
-    /** Matched TMDB id — gates the clickable year chip (Discover page) */
-    tmdbId?: number;
     /** Media type the enrichment matched as; Discover click routing */
     tmdbMediaType?: TmdbMediaType;
     /** Per-entry clickable genre chips (Discover page) */