refactor(safety): apply consistent formatting across services and tests

Improved code readability and uniformity by standardizing line breaks, indentation, and inline conditions across safety-related services, models, and tests, including content filters, validation rules, and emergency controls.

backend/tests/services/mcp/test_connection.py

@@ -220,9 +220,7 @@ class TestMCPConnection:
             MockClient.return_value = mock_client
 
             await conn.connect()
-            result = await conn.execute_request(
-                "POST", "/mcp", data={"method": "test"}
-            )
+            result = await conn.execute_request("POST", "/mcp", data={"method": "test"})
 
             assert result == {"result": "success"}