style: apply ruff fixes

backend/main.py

@@ -14,12 +14,12 @@ from fastapi.responses import Response
 from fastapi.staticfiles import StaticFiles
 from metrics import observe_request, prometheus_metrics
 from middleware import CorrelationIdMiddleware
+from routes.ask import router as ask_router
 from routes.config import router as config_router
 from routes.events import router as events_router
 from routes.fetch import router as fetch_router
 from routes.fetch import run_fetch
 from routes.health import router as health_router
-from routes.ask import router as ask_router
 from routes.rules import router as rules_router
 from routes.webhooks import router as webhooks_router