Method provider_name

tests/utils/mock_openai_client.cpp:110–112

}

std::string ControllableOpenAIClient::provider_name() const {
  return "openai-test";
}

std::vector<std::string> ControllableOpenAIClient::supported_models() const {
  return {"gpt-5.4", "gpt-5-mini", "gpt-4.1"};