async def file_exists(self, container_name: str, blob_name: str) -> bool:
        """Check if a file exists in local storage.

        Args:
            container_name: Name of the directory
            blob_name: Name of the file

        Returns:
            True if the file exists
        """
        # Sanitize blob_name to create valid file path
        safe_blob_name = blob_name.replace(":", "_").replace("/", os.sep)
        file_path = self.base_path / container_name / safe_blob_name
        return file_path.exists()
Check if a file exists in local storage.

        Args:
            container_name: Name of the directory
            blob_name: Name of the file

        Returns:
            True if the file exists
        
backend/airweave/platform/storage/storage_client.py