Programmatic Control Setup

```bash
pip install ag-ui-adk
```

Programmatic control (`copilotkit.runAgent`, `agent.subscribe`,
`agent.addMessage`) drives runs through the same agent your chat UI
uses, so the backend wiring is the same — wire `AGUIToolset()` once and
every entry point sees the same forwarded tools and state.

<DemoCode file="src/agents/hitl_in_chat_agent.py" region="setup" />

ADK doesn't ship a native `interrupt(...)` primitive — for the headless
interrupt-resolver pattern, use the frontend `useFrontendTool`
Promise-based handler instead.