- Endpoint /ingest now only validates payload, creates raw_data with
  status=pending, commits and returns 202 (no longer blocks on AI).
- QueueWorker polls DB for pending jobs every 1s, grabs one with
  FOR UPDATE SKIP LOCKED, marks it processing, runs PropertyPipeline.
- PipelineFactory extracted from deps.py for reuse by both HTTP deps
  and the background worker.
- Lifespan starts QueueWorker as asyncio.Task; on shutdown signals
  stop_event, awaits worker termination (60s timeout) before closing
  Ollama client and active_jobs.
- Worker checks pipeline result status and logs completed/invalid/failed
  appropriately. Unhandled exceptions mark raw_data failed explicitly.

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