# Uno Q workshop node — provisioning

Turns an Arduino Uno Q into an APESS workshop node: a ZeroClaw daemon that
exposes an HTTP/SSE gateway, drives the on-board MCU (generate → compile →
flash), and answers with cloud-first / on-board-Qwen-fallback inference. APESS
proxies each board and streams its activity to participants and instructors.

## What a provisioned board runs

- **`zeroclaw daemon`** on `:8080` — the gateway APESS talks to (`/pair`,
  `/webhook`, `/ws/chat`, `/api/events`, `/health`). Use `daemon`, **not**
  `gateway start` — only the daemon/agent/channel paths register the hardware
  tools (`uno_q_flash`, …).
- **`llama-server`** on `:8083` — on-board Qwen for offline/fallback inference.
- **Three agents**, selected per request via `?agent=` (APESS maps the harness
  provider choice → alias; see `src/lib/harness.ts` `harnessToAgent`):
  | alias | provider | behaviour |
  |-------|----------|-----------|
  | `default` | `custom.claude` | cloud, **fallback to on-board Qwen** |
  | `cloud`   | `custom.cloud`  | cloud only |
  | `local`   | `llamacpp.local`| on-board Qwen only (fully offline) |

## Prerequisites on the board

- `/home/arduino/zeroclaw` — the ZeroClaw binary (aarch64), **with the
  gateway-peripheral-registration fix** (merged to `osobh/zeroclaw` main).
- `/home/arduino/llama/llama-server` + `/home/arduino/models/qwen.gguf`.
- Arduino Zephyr core `arduino:zephyr:unoq` (0.51.0) + OpenOCD for flashing,
  and `ArduinoGraphics` if using scroll text.

## Provision (dev — over USB/adb)

```sh
export APESS_ADMIN_CODE=adm-xxxxxxxx          # instructor code
./provision-uno-q.sh <adb-serial> team-07 https://apess-api.redclaw.dev
```

Steps it runs: install `config.template.toml` (cloud endpoint substituted) →
start `llama-server` → start `zeroclaw daemon` → pair for a bearer token →
`POST /nodes` to APESS. Idempotent; re-run to re-provision.

Override the cloud endpoint (default is the local `claude_shim` on `:8090`):

```sh
CLOUD_URI=https://api.anthropic.com/v1 CLOUD_MODEL=claude-haiku-4-5 \
  APESS_ADMIN_CODE=adm-xxxx ./provision-uno-q.sh <serial> team-07
```

> The shim on `:8090` is a bring-up convenience (one Mac). A real fleet points
> `CLOUD_URI` at a shared cloud endpoint (Anthropic / OpenRouter / LiteLLM) with
> a key, so boards don't each need a tunnel.

## Provision (production — systemd, boots on power-up)

With root on the board:

```sh
sudo cp systemd/zeroclaw-llama.service systemd/zeroclaw-daemon.service /etc/systemd/system/
sudo systemctl enable --now zeroclaw-llama zeroclaw-daemon
```

For a LAN fleet (participants reach the board's WiFi IP directly), set in
`config.toml`:

```toml
[gateway]
host = "0.0.0.0"
allow_public_bind = true
```

Then pair + register once (steps 4–5 of the script) so APESS has the board's
`{ url, token }`.

## Resilience — surviving a disconnect (no-root boards)

A sudden USB/adb drop breaks things that don't self-heal: the adb tunnels
vanish (board loses the cloud shim), held-shell services die, llama can wedge
(process alive but `:8083` dead), and flashes silently stop landing while the
tool still reports success. The MCU keeps its last sketch; the paired token
survives.

The systemd units above are the clean answer **when you have root**. Some dev
boards don't — an expired account blocks `sudo` and there's no user session bus,
so neither system nor user units can run. For those, use the no-root pieces:

- **`zeroclaw-supervisor.sh`** (runs on the board) — a watchdog that polls the
  `/health` **endpoints** (a wedged process passes `pgrep` but fails here) and
  restarts llama / the daemon when they die or wedge. Children are launched with
  `setsid … exec` so they survive the shell that started them — the property
  plain `nohup … &` inside `adb shell` does **not** give you. Install + persist:

  ```sh
  adb -s <serial> push zeroclaw-supervisor.sh /home/arduino/ && \
    adb -s <serial> shell 'chmod +x /home/arduino/zeroclaw-supervisor.sh; \
      setsid nohup /home/arduino/zeroclaw-supervisor.sh >/dev/null 2>&1 </dev/null &'
  # boot persistence (no root; cron must be running):
  adb -s <serial> shell '(crontab -l 2>/dev/null | grep -v zeroclaw-supervisor.sh; \
    echo "@reboot /home/arduino/zeroclaw-supervisor.sh") | crontab -'
  ```

- **`recover-uno-q.sh`** (runs on the host) — after the board is physically back,
  re-does adb + both tunnels, ensures the supervisor is up, and health-checks
  every hop by endpoint:

  ```sh
  ./recover-uno-q.sh <serial> [cloud-shim-port]   # default shim port 8090
  ```

See the `unoq-disconnect-recovery` note for the full failure-mode list.

## Verify

```sh
adb -s <serial> forward tcp:8080 tcp:8080
curl -s localhost:8080/health                       # {"status":"ok"}
# each agent alias resolves (needs a bearer token from /pair):
curl -s -X POST 'localhost:8080/webhook?agent=local'  -H "authorization: Bearer $TOK" \
  -H 'content-type: application/json' -d '{"message":"one word: local"}'
```

`?agent=local` routes to Qwen (offline), `?agent=cloud` to the cloud, `?agent=default`
cloud-with-fallback. In APESS, the team's provider/fallback toggle picks the alias.

## Files

- `config.template.toml` — the node config (secrets stripped; `__CLOUD_URI__` /
  `__CLOUD_MODEL__` substituted at provision time).
- `provision-uno-q.sh` — one-shot provisioner (adb-driven).
- `systemd/*.service` — production units (need root).
- `zeroclaw-supervisor.sh` — on-board no-root watchdog (endpoint health + restart).
- `recover-uno-q.sh` — host-side post-disconnect recovery (re-tunnel + health-check).