Fix job_id mismatch between ingestion enqueue and status endpoints

POST /api/v1/admin/ingest/movie returned arq's own internal queue
job id, but GET /api/v1/admin/ingest/jobs/{job_id} looked up our
IngestionJob DB row by its own UUID -- a completely different id that
didn't even exist yet at enqueue time (the row was only created once
the worker picked up the task). Every status poll 404'd.

Fix: create the IngestionJob row synchronously in the enqueue endpoint
(reusing the existing idempotency-key logic, so repeat enqueues for
the same tmdb_id reuse the same row rather than creating duplicates),
pass its real id into the arq task, and have the worker update that
row instead of creating a new one.

Found by actually running the milestone end-to-end: enqueue a real
TMDb ingestion, then poll its status.

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

app/api/v1/admin.py

@@ -17,6 +17,7 @@ from app.core.database import get_db
 from app.core.queue import get_queue
 from app.core.security import require_admin_api_key
 from app.repositories.provider_repository import get_ingestion_job
+from app.services.ingestion.runner import get_or_create_ingestion_job
 
 router = APIRouter(
     prefix="/admin",
@@ -54,24 +55,30 @@ class IngestionJobOut(BaseModel):
 async def enqueue_movie_ingestion(
     body: IngestMovieRequest, queue: ArqRedis = Depends(get_queue)
 ) -> IngestionEnqueuedOut:
-    job = await queue.enqueue_job("ingest_movie_task", body.tmdb_id)
-    if job is None:
+    # Created synchronously (and idempotently — same tmdb_id reuses the same
+    # row) so the response's job_id is immediately valid against
+    # GET /ingest/jobs/{job_id}. arq's own job id is a separate, unrelated
+    # identifier used only for queue bookkeeping.
+    job_id = await get_or_create_ingestion_job("movie_sync", "movie", body.tmdb_id)
+    arq_job = await queue.enqueue_job("ingest_movie_task", str(job_id), body.tmdb_id)
+    if arq_job is None:
         raise HTTPException(
             status.HTTP_503_SERVICE_UNAVAILABLE, "Could not enqueue ingestion job (queue busy)."
         )
-    return IngestionEnqueuedOut(job_id=job.job_id, arq_job_id=job.job_id)
+    return IngestionEnqueuedOut(job_id=str(job_id), arq_job_id=arq_job.job_id)
 
 
 @router.post("/ingest/person", response_model=IngestionEnqueuedOut)
 async def enqueue_person_ingestion(
     body: IngestPersonRequest, queue: ArqRedis = Depends(get_queue)
 ) -> IngestionEnqueuedOut:
-    job = await queue.enqueue_job("ingest_person_task", body.tmdb_id)
-    if job is None:
+    job_id = await get_or_create_ingestion_job("person_sync", "person", body.tmdb_id)
+    arq_job = await queue.enqueue_job("ingest_person_task", str(job_id), body.tmdb_id)
+    if arq_job is None:
         raise HTTPException(
             status.HTTP_503_SERVICE_UNAVAILABLE, "Could not enqueue ingestion job (queue busy)."
         )
-    return IngestionEnqueuedOut(job_id=job.job_id, arq_job_id=job.job_id)
+    return IngestionEnqueuedOut(job_id=str(job_id), arq_job_id=arq_job.job_id)
 
 
 @router.get("/ingest/jobs/{job_id}", response_model=IngestionJobOut)