refactor: complete Task 2/3 geo decouple + exceptions centralization; mark as done

backend/app/services/config_file_service.py

@@ -54,8 +54,8 @@ from app.models.config import (
     JailValidationResult,
     RollbackResponse,
 )
+from app.exceptions import JailNotFoundError
 from app.services import jail_service
-from app.services.jail_service import JailNotFoundError as JailNotFoundError
 from app.utils import conffile_parser
 from app.utils.fail2ban_client import (
     Fail2BanClient,