def validate_config_values(self):
        """Validate that no values are dictionaries (depth 0)."""
        for key, value in self.__dict__.items():
            if isinstance(value, dict):
                raise ValueError(f"Value for '{key}' must not be a dictionary (depth 0 only)")
        return self
Validate that no values are dictionaries (depth 0).
backend/airweave/platform/configs/_base.py