Refactor code for improved readability and consistency

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

tests/test_auth_routes.py

@@ -23,32 +23,45 @@ class TestAuthRoutesJWTExtended:
     @patch("app.routes.auth.auth_service.get_login_url")
     def test_login_route(self, mock_get_login_url: Mock, client) -> None:
         """Test the login route."""
-        mock_get_login_url.return_value = "https://accounts.google.com/oauth/authorize?..."
-        
+        mock_get_login_url.return_value = (
+            "https://accounts.google.com/oauth/authorize?..."
+        )
+
         response = client.get("/api/auth/login")
         assert response.status_code == 200
         data = response.get_json()
         assert "login_url" in data
-        assert data["login_url"] == "https://accounts.google.com/oauth/authorize?..."
+        assert (
+            data["login_url"]
+            == "https://accounts.google.com/oauth/authorize?..."
+        )
 
     @patch("app.routes.auth.auth_service.handle_callback")
-    def test_callback_route_success(self, mock_handle_callback: Mock, client) -> None:
+    def test_callback_route_success(
+        self, mock_handle_callback: Mock, client
+    ) -> None:
         """Test successful callback route."""
         mock_response = Mock()
         mock_response.get_json.return_value = {
             "message": "Login successful",
-            "user": {"id": "123", "email": "test@example.com", "name": "Test User"}
+            "user": {
+                "id": "123",
+                "email": "test@example.com",
+                "name": "Test User",
+            },
         }
         mock_handle_callback.return_value = mock_response
-        
+
         response = client.get("/api/auth/callback?code=test_code")
         mock_handle_callback.assert_called_once()
 
     @patch("app.routes.auth.auth_service.handle_callback")
-    def test_callback_route_error(self, mock_handle_callback: Mock, client) -> None:
+    def test_callback_route_error(
+        self, mock_handle_callback: Mock, client
+    ) -> None:
         """Test callback route with error."""
         mock_handle_callback.side_effect = Exception("OAuth error")
-        
+
         response = client.get("/api/auth/callback?code=test_code")
         assert response.status_code == 400
         data = response.get_json()
@@ -58,9 +71,11 @@ class TestAuthRoutesJWTExtended:
     def test_logout_route(self, mock_logout: Mock, client) -> None:
         """Test logout route."""
         mock_response = Mock()
-        mock_response.get_json.return_value = {"message": "Logged out successfully"}
+        mock_response.get_json.return_value = {
+            "message": "Logged out successfully"
+        }
         mock_logout.return_value = mock_response
-        
+
         response = client.get("/api/auth/logout")
         mock_logout.assert_called_once()
 
@@ -76,4 +91,4 @@ class TestAuthRoutesJWTExtended:
         response = client.post("/api/auth/refresh")
         assert response.status_code == 401
         data = response.get_json()
-        assert "msg" in data  # Flask-JWT-Extended error format
+        assert "msg" in data  # Flask-JWT-Extended error format