Initial Code Generation and Linting Integration

Implement the agent's ability to generate an initial Python function based on a given prompt (e.g., 'Generate a prime number checker'). Integrate your mock linter tool. The agent should call the linter after generating the code and analyze its output. Your implementation should use `client.beta.assistants.create` and `client.beta.threads.create` for the agent's lifecycle, and handle `requires_action` for tool calls.