Refactor code for improved readability and consistency

- Cleaned up whitespace and formatting across multiple files for better readability.

tests/test_auth_service.py

@@ -21,13 +21,13 @@ class TestAuthServiceJWTExtended:
         """Test initializing AuthService with Flask app."""
         mock_getenv.side_effect = lambda key: {
             "GOOGLE_CLIENT_ID": "test_client_id",
-            "GOOGLE_CLIENT_SECRET": "test_client_secret"
+            "GOOGLE_CLIENT_SECRET": "test_client_secret",
         }.get(key)
-        
+
         app = create_app()
         auth_service = AuthService()
         auth_service.init_app(app)
-        
+
         # Verify OAuth was initialized
         assert auth_service.google is not None
 
@@ -39,10 +39,12 @@ class TestAuthServiceJWTExtended:
         with app.app_context():
             mock_response = Mock()
             mock_jsonify.return_value = mock_response
-            
+
             auth_service = AuthService()
             result = auth_service.logout()
-            
+
             assert result == mock_response
             mock_unset.assert_called_once_with(mock_response)
-            mock_jsonify.assert_called_once_with({"message": "Logged out successfully"})
+            mock_jsonify.assert_called_once_with(
+                {"message": "Logged out successfully"}
+            )