style: fix pre-commit issues

Author: Tanishq S

backend/tests/test_task_repository.py

@@ -3,6 +3,7 @@
 from oasst_backend.task_repository import validate_frontend_message_id
 from oasst_shared.exceptions.oasst_api_error import OasstError, OasstErrorCode
 
+
 def test_validate_frontend_message_id_valid():
     """Test that a valid string ID passes validation."""
     validate_frontend_message_id("valid-id-123")
@@ -11,22 +12,22 @@ def test_validate_frontend_message_id_empty():
     """Test that an empty string raises an error."""
     with pytest.raises(OasstError) as excinfo:
         validate_frontend_message_id("")
-    
+
     assert excinfo.value.error_code == OasstErrorCode.INVALID_FRONTEND_MESSAGE_ID
     assert "message_id must not be empty" in str(excinfo.value)
 
 def test_validate_frontend_message_id_none():
     """Test that None raises an error."""
     with pytest.raises(OasstError) as excinfo:
         validate_frontend_message_id(None)
-    
+
     assert excinfo.value.error_code == OasstErrorCode.INVALID_FRONTEND_MESSAGE_ID
     assert "message_id must be string" in str(excinfo.value)
 
 def test_validate_frontend_message_id_wrong_type():
     """Test that a non-string type raises an error."""
     with pytest.raises(OasstError) as excinfo:
         validate_frontend_message_id(12345)
-    
+
     assert excinfo.value.error_code == OasstErrorCode.INVALID_FRONTEND_MESSAGE_ID
     assert "message_id must be string" in str(excinfo.value)