devdesk/docs/DEPLOY.md

# Deploying DevDesk (CT 126 · dev.lotusguild.org)

## 1. Install the package
Add the Gitea apt repository once:
```bash
curl -fsSL https://code.lotusguild.org/api/packages/LotusGuild/debian/repository.key \
  -o /etc/apt/keyrings/gitea-LotusGuild.asc
echo "deb [signed-by=/etc/apt/keyrings/gitea-LotusGuild.asc] https://code.lotusguild.org/api/packages/LotusGuild/debian bookworm main" \
  > /etc/apt/sources.list.d/lotusguild.list
apt update && apt install devdesk
```
On install, `/etc/devdesk/secret.env` is generated, `devdesk-tmux.service` and `devdesk.service` are enabled and started, and ttyd listens on `:7681`. Requests without the credential get a **401**.

## 2. Nginx Proxy Manager (CT 139)
- **Proxy host:** `dev.lotusguild.org` → `http://10.10.10.58:7681`.
  - Websockets Support **on**.
  - SSL: the existing wildcard `*.lotusguild.org` certificate, with Force SSL.
- **Advanced tab:** paste [`npm-advanced.conf`](npm-advanced.conf), replacing `__DEVDESK_BASIC__` with the output of:
  ```bash
  . /etc/devdesk/secret.env && printf '%s' "$DEVDESK_CREDENTIAL" | base64 -w0
  ```
- **Why the credential matters:** ttyd only checks the credential, so anything on the LAN that bypasses NPM is refused. If you rotate it, delete `secret.env`, run `dpkg-reconfigure devdesk`, update NPM, then `systemctl restart devdesk`.

## 3. Authelia (CT 167)
Add these to `access_control.rules` in `/etc/authelia/configuration.yml`, **above** any broader `*.lotusguild.org` rule:
```yaml
- domain: dev.lotusguild.org
  policy: two_factor
  subject: ['user:jared']
- domain: dev.lotusguild.org
  policy: deny
```
Then run `authelia validate-config --config /etc/authelia/configuration.yml && systemctl restart authelia`.

## 4. DNS
- **Cloudflare:** add a CNAME `dev` → apex, DNS-only (grey cloud).
- **Pi-hole:** add `"10.10.10.27 dev.lotusguild.org"` to `dns.hosts` in `pve-infra/containers/163-pihole/etc/pihole/pihole.toml`. A push auto-deploys it, and LAN clients then reach NPM directly instead of hairpinning.

## 5. Auto-deploy on release
A `v*` tag makes CI publish the package, then send a signed webhook (the house HMAC pattern) to CT 126's existing `webhook` listener on :9000. The listener runs `/usr/lib/devdesk/devdesk-deploy <ref>`, which waits for that version in the apt registry and upgrades only `devdesk` with `--force-confold`. Running Claude sessions are untouched. The log is `/var/log/devdesk-deploy.log`.

**Setup, done once:**
1. Generate a secret.
2. Add this hook to `/etc/webhook/hooks.json`, next to `126-config-deploy`. The file is local and untracked because it holds secrets.
   ```json
   {
     "id": "devdesk-deploy",
     "execute-command": "/usr/lib/devdesk/devdesk-deploy",
     "command-working-directory": "/",
     "pass-arguments-to-command": [{"source": "payload", "name": "ref"}],
     "trigger-rule": {"and": [
       {"match": {"type": "payload-hash-sha256", "secret": "<WEBHOOK_SECRET>",
                  "parameter": {"source": "header", "name": "X-Gitea-Signature"}}},
       {"match": {"type": "regex", "regex": "^refs/tags/v[0-9]+\\.[0-9]+\\.[0-9]+$",
                  "parameter": {"source": "payload", "name": "ref"}}}
     ]}
   }
   ```
3. Run `systemctl restart webhook`.
4. Store the same secret as the devdesk repo's Actions secret `WEBHOOK_SECRET`.

## 6. Firewall (required)
The ttyd credential is the only thing between the LAN and a root shell, so only NPM may reach :7681. CT 126 ships this in pve-infra (`containers/126-codingenvironment/etc/nftables.conf`, installed by its `deploy.sh`):

```
table inet devdesk {
    chain input {
        type filter hook input priority filter - 10; policy accept;
        tcp dport 7681 ip saddr { 127.0.0.1, 10.10.10.27 } accept
        tcp dport 7681 ip6 saddr ::1 accept
        tcp dport 7681 counter reject with tcp reset
    }
}
```

Check from another LAN host: `curl -m3 http://10.10.10.58:7681/` must fail with "connection refused". To rotate the credential: `rm /etc/devdesk/secret.env && dpkg-reconfigure devdesk`, put the new `Authorization` value in NPM proxy host 58's Advanced tab, then `systemctl restart devdesk`.

## 7. Matrix "Claude needs you" (optional)
1. Deploy a hookshot transform named `Devdesk` (`hookshot/devdesk.js` in the matrix repo; pushing it to `main` auto-deploys it on LXC 151). Look up the hook UUID as described in that repo's README.
2. `umask 077; echo https://matrix.lotusguild.org/webhook/<uuid> > /etc/devdesk/matrix-webhook`.
3. Nothing to restart: the next wait that lasts `DEVDESK_MATRIX_DELAY` seconds with nobody attached posts a message.

## Operations
| Task | Command |
|---|---|
| Sessions | `devdesk ls` |
| Attach over SSH | `devdesk attach <name>` (or `devdesk pick`) |
| New session (optionally in a project) | `devdesk new <name> [project]`, or the Sessions panel form |
| Rename a session | `devdesk rename <old> <new>`, or ✎ in the Sessions panel |
| End a session | `devdesk end <name>`, × in the Sessions panel, or `[x]` in the Claude window's exit menu |
| Restart the web side (safe) | `systemctl restart devdesk` |
| **Stop every session** | `systemctl stop devdesk-tmux` |
| Logs | `journalctl -u devdesk -u devdesk-tmux` |
| UI-only update | replace `/usr/share/devdesk/index.html` (ttyd re-reads it per request) |