# Puck daemon

`gradio.Server` (Gradio 6 server mode) that doubles as the **HF Space backend** and the **local daemon**. It is dumb pipes by design: validate wire events against [`/schema/event.schema.json`](../schema/event.schema.json), queue them, serve the built frontend. All policy lives in the TS engine (`frontend/src/engine`) — keeping it that way is what makes the eventual Tauri/Rust swap ~150 lines instead of a rewrite.

## Run

```bash
cd server
uv run app.py            # http://127.0.0.1:7777
```

- Serves `frontend/dist` at `/` if built (`cd frontend && bun run build`).
- In dev, run `bun dev` in `frontend/` instead — vite proxies `/api` to `:7777`.

## API

| Route | Purpose |
|---|---|
| `POST /api/events` | Ingest a wire event. 202 on accept, **422 with details** on schema violation |
| `GET /api/events/pending` | Drain the queue (each event delivered once; frontend polls every 3s) |
| `GET /api/health` | Liveness |

Try it:

```bash
curl -X POST http://127.0.0.1:7777/api/events \
  -H 'Content-Type: application/json' \
  -d '{"source":"claude","type":"task_completed","title":"Refactor memory garden"}'
```

Puck flies over and comments within ~3s.

## Claude Code hook

`claude-hooks/puck-event.sh` turns Claude Code lifecycle events into Puck events. Register in `~/.claude/settings.json`:

```json
{
  "hooks": {
    "Stop": [
      { "hooks": [{ "type": "command", "command": "/Users/vuln/code/puck/server/claude-hooks/puck-event.sh" }] }
    ],
    "Notification": [
      { "hooks": [{ "type": "command", "command": "/Users/vuln/code/puck/server/claude-hooks/puck-event.sh" }] }
    ]
  }
}
```

Fire-and-forget: if the daemon is down, the hook exits 0 in ≤2s and Claude Code never notices.

## Adding a new watcher

Write anything that POSTs the wire shape to `/api/events` — language doesn't matter, the schema is the contract. Give the engine a scoring template for your `(source, type)` pair in `frontend/src/engine/wire.ts` (`TEMPLATES`), or accept the middling fallback scores.