Add actor/cast information with person pages and search support

Integrate TMDB credits data into the app: cast carousels on title detail
pages, person detail pages with biography and filmography, and person
search results in the command palette. Includes new persons/titleCast
DB tables, profile image caching, and a nightly credits refresh cron job.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/api/images/[...path]/route.ts

@@ -11,6 +11,7 @@ const VALID_CATEGORIES = new Set<ImageCategory>([
   "backdrops",
   "stills",
   "logos",
+  "profiles",
 ]);
 
 const IMMUTABLE_CACHE = "public, max-age=31536000, immutable";