Method ~MockHTTPClient

tests/utils/mock_openai_client.h:20–20

Using simple function signatures to avoid GMock template issues

 public:
  // Using simple function signatures to avoid GMock template issues
  virtual ~MockHTTPClient() = default;
  virtual bool post(const std::string& url,
                    const std::map<std::string, std::string>& headers,
                    const std::string& body,