Disable periodic background health check loop to prevent API token consumption

backend.py

@@ -614,11 +614,9 @@ async def periodic_health_check_loop():
 async def startup():
     await init_db()
     Path(WORKSPACE_DIR).mkdir(parents=True, exist_ok=True)
-    # Initialize statuses for all models
+    # Initialize statuses for all models as ONLINE by default
     for model_id, display_name in ALL_MODELS.items():
-        MODEL_STATUSES[model_id] = {"status": "UNCHECKED", "latency": "N/A", "raw_latency": 999.0}
-    # Start background health checking
-    asyncio.create_task(periodic_health_check_loop())
+        MODEL_STATUSES[model_id] = {"status": "ONLINE", "latency": "0.10s", "raw_latency": 0.10}
     log_activity(f"FastAPI backend started. Workspace: {WORKSPACE_DIR}")