fix: improve maintenance and synchronize live conversations

backend/tests/services/test_file_upload_service.py

@@ -16,9 +16,7 @@ limitations under the License.
 
 import pytest
 import base64
-import os
-import tempfile
-from unittest.mock import Mock, patch, AsyncMock, MagicMock
+from unittest.mock import Mock, patch, MagicMock
 from uuid import uuid4
 
 from app.services.file_upload_service import (
@@ -344,7 +342,7 @@ class TestFileUploadServiceUpload:
     async def test_upload_file_local_write_failure(self, sample_file_data):
         """Test handling of local file write failure"""
         with patch('app.services.file_upload_service.settings') as mock_settings, \
-             patch('os.makedirs') as mock_makedirs, \
+             patch('os.makedirs'), \
              patch('builtins.open', create=True) as mock_open:
             
             mock_settings.S3_FILE_STORAGE = False