Refactor code for improved readability and consistency

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

tests/test_routes.py

@@ -21,7 +21,10 @@ class TestMainRoutes:
         """Test the index route."""
         response = client.get("/api/")
         assert response.status_code == 200
-        assert response.get_json() == {"message": "API is running", "status": "ok"}
+        assert response.get_json() == {
+            "message": "API is running",
+            "status": "ok",
+        }
 
     def test_health_route(self, client) -> None:
         """Test health check route."""
@@ -34,4 +37,4 @@ class TestMainRoutes:
         response = client.get("/api/protected")
         assert response.status_code == 401
         data = response.get_json()
-        assert data["error"] == "Authentication required (JWT or API token)"
+        assert data["error"] == "Authentication required (JWT or API token)"