setup boilerplate for creating background workers and add 1 for dumping listings

crawler/api/app.py

@@ -6,7 +6,13 @@ from typing import Annotated
 import uuid
 from api.auth import get_current_user
 from api.config import DEV_TIER_ORIGINS, PROD_TIER_ORIGINS
-from api.worker import TaskStatus, dump_listings_worker, task_queue, task_results
+from api.worker import (
+    DumpListingsWorker,
+    TaskStatus,
+    WorkerManager,
+    task_queue,
+    task_results,
+)
 from fastapi import Depends, FastAPI, HTTPException, Query
 from api.auth import User
 from models.listing import QueryParameters
@@ -19,7 +25,8 @@ from ui_exporter import export_immoweb
 app = FastAPI()
 
 # Start worker thread
-Thread(target=asyncio.run, args=[dump_listings_worker()], daemon=True).start()
+WorkerManager(DumpListingsWorker()).start()
+
 
 # Allow CORS (for React frontend)
 app.add_middleware(