Store TMDB genres in normalized tables (genres + titleGenres) and content
ratings as a column on titles. Both are fetched during import/refresh using
append_to_response for content ratings (no extra API calls). Displayed in
the title hero between type badge and year. Also fixes pre-existing type
error for profile_path on TmdbSearchResult.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
