Add GET /movies/{id}/recommendations

Ingestion already stored movie_recommendations edges from TMDb's
recommendations list (linking only to movies already ingested into
Aurora, per the never-fabricate-a-stub rule), but nothing exposed them.
Adds the repository lookup, service assembly, and route to read them
back in ranked order.

Co-Authored-By: Claude Sonnet 5 <[email protected]>

app/api/v1/movies.py

@@ -10,7 +10,13 @@ from app.api.deps import cached_response, not_found
 from app.core.database import get_db
 from app.core.redis import get_redis
 from app.core.security import enforce_rate_limit
-from app.schemas.movie import MovieCreditsOut, MovieDetailOut, MovieImagesOut, MovieVideosOut
+from app.schemas.movie import (
+    MovieCreditsOut,
+    MovieDetailOut,
+    MovieImagesOut,
+    MovieRecommendationsOut,
+    MovieVideosOut,
+)
 from app.services import movie_service
 from app.services.cache import build_key
 
@@ -62,3 +68,13 @@ async def get_movie_videos(
         return await movie_service.get_movie_videos(session, aurora_id)
     except movie_service.MovieNotFoundError as exc:
         raise not_found("movie", aurora_id) from exc
+
+
+@router.get("/{aurora_id}/recommendations", response_model=MovieRecommendationsOut)
+async def get_movie_recommendations(
+    aurora_id: str, session: AsyncSession = Depends(get_db)
+) -> MovieRecommendationsOut:
+    try:
+        return await movie_service.get_movie_recommendations(session, aurora_id)
+    except movie_service.MovieNotFoundError as exc:
+        raise not_found("movie", aurora_id) from exc