add-emacs

# Add Emacs Channel

Adds Emacs support via a local HTTP bridge. Works with Doom Emacs, Spacemacs, and vanilla Emacs 27.1+.

## What you can do with this

- **Ask while coding** — open the chat buffer (`C-c n c` / `SPC N c`), ask about a function or error without leaving Emacs
- **Code review** — select a region and send it with `nanoclaw-org-send`; the response appears as a child heading inline in your org file
- **Meeting notes** — send an org agenda entry; get a summary or action item list back as a child node
- **Draft writing** — send org prose; receive revisions or continuations in place
- **Research capture** — ask a question directly in your org notes; the answer lands exactly where you need it

## Install

NanoClaw doesn't ship channels in trunk. This skill copies the Emacs adapter and the Lisp client in from the `channels` branch. Native HTTP bridge — no Chat SDK, no adapter package.

### Pre-flight (idempotent)

Skip to **Enable** if all of these are already in place:

- `src/channels/emacs.ts` exists
- `src/channels/emacs.test.ts` exists
- `src/channels/emacs-registration.test.ts` exists
- `emacs/nanoclaw.el` exists
- `src/channels/index.ts` contains `import './emacs.js';`

Otherwise continue. Every step below is safe to re-run.

### 1. Fetch the channels branch

```bash
git fetch origin channels
```

### 2. Copy the adapter and Lisp client

```bash
mkdir -p emacs
git show origin/channels:src/channels/emacs.ts                    > src/channels/emacs.ts
git show origin/channels:src/channels/emacs.test.ts              > src/channels/emacs.test.ts
git show origin/channels:src/channels/emacs-registration.test.ts > src/channels/emacs-registration.test.ts
git show origin/channels:emacs/nanoclaw.el                        > emacs/nanoclaw.el
```

### 3. Append the self-registration import

Append to `src/channels/index.ts` (skip if the line is already present):

```typescript
import './emacs.js';
```

### 4. Build and validate

```bash
pnpm run build
pnpm exec vitest run src/channels/emacs-registration.test.ts
```

Both must be clean before proceeding. `emacs-registration.test.ts` is the one integration test: it imports the real channel barrel and asserts the registry contains `emacs`. It goes red if the `import './emacs.js';` line is deleted or drifts, or if the barrel fails to evaluate (so the channel genuinely would not register). The adapter uses only Node builtins (`http`), so there is no npm dependency to guard for this channel.

End-to-end message delivery from a real Emacs buffer is verified manually once the service is running — see Verify and Troubleshooting.

## Enable

The adapter is gated by `EMACS_ENABLED` so the HTTP port isn't opened on hosts that aren't running Emacs. Add to `.env`:

```bash
EMACS_ENABLED=true
EMACS_CHANNEL_PORT=8766       # optional — change only if 8766 is taken
EMACS_AUTH_TOKEN=             # optional — set to a random string to lock the endpoint
EMACS_PLATFORM_ID=default     # optional — only change if you want a non-default chat id
```

Generate an auth token (recommended even on single-user machines — prevents other local processes from poking the endpoint):

```bash
node -e "console.log(require('crypto').randomBytes(16).toString('hex'))"
```

## Wire the channel

Emacs is a single-user, single-chat channel. One host = one messaging group with `platform_id = "default"`.

### If this is your first agent group

Run `/init-first-agent` — pick **Emacs** as the channel, use any short handle as the "user id" (e.g. your OS username), and the skill will create the agent group, wire the channel, and write a welcome message that the agent delivers back to your Emacs buffer.

### Otherwise — wire to an existing agent group

Run the `register` step directly. The `EMACS_PLATFORM_ID` (default `default`) becomes the messaging group's platform id:

```bash
pnpm exec tsx setup/index.ts --step register -- \
  --platform-id "default" --name "Emacs" \
  --folder "<existing-folder>" --channel "emacs" \
  --session-mode "agent-shared" \
  --assistant-name "<existing-assistant-name>"
```

`agent-shared` puts Emacs messages in the same session as any other channel wired to the same agent group — so a conversation you started in Telegram continues in Emacs. Use `shared` to keep an independent Emacs thread with the same workspace, or a new `--folder` for a dedicated Emacs-only agent.

## Configure Emacs

`nanoclaw.el` needs only Emacs 27.1+ builtins (`url`, `json`, `org`) — no package manager.

AskUserQuestion: Which Emacs distribution are you using?
- **Doom Emacs** — `config.el` with `map!` keybindings
- **Spacemacs** — `dotspacemacs/user-config` in `~/.spacemacs`
- **Vanilla Emacs / other** — `init.el` with `global-set-key`

**Doom Emacs** — add to `~/.config/doom/config.el` (or `~/.doom.d/config.el`):

```elisp
;; NanoClaw — personal AI assistant channel
(load (expand-file-name "~/src/nanoclaw/emacs/nanoclaw.el"))

(map! :leader
      :prefix ("N" . "NanoClaw")
      :desc "Chat buffer"  "c" #'nanoclaw-chat
      :desc "Send org"     "o" #'nanoclaw-org-send)
```

Reload: `M-x doom/reload`

**Spacemacs** — add to `dotspacemacs/user-config` in `~/.spacemacs`:

```elisp
;; NanoClaw — personal AI assistant channel
(load-file "~/src/nanoclaw/emacs/nanoclaw.el")

(spacemacs/set-leader-keys "aNc" #'nanoclaw-chat)
(spacemacs/set-leader-keys "aNo" #'nanoclaw-org-send)
```

Reload: `M-x dotspacemacs/sync-configuration-layers` or restart Emacs.

**Vanilla Emacs** — add to `~/.emacs.d/init.el`:

```elisp
;; NanoClaw — personal AI assistant channel
(load-file "~/src/nanoclaw/emacs/nanoclaw.el")

(global-set-key (kbd "C-c n c") #'nanoclaw-chat)
(global-set-key (kbd "C-c n o") #'nanoclaw-org-send)
```

Reload: `M-x eval-buffer` or restart Emacs.

Replace `~/src/nanoclaw/emacs/nanoclaw.el` with your actual NanoClaw checkout path.

If `EMACS_AUTH_TOKEN` is set, also add (any distribution):

```elisp
(setq nanoclaw-auth-token "<your-token>")
```

If you changed `EMACS_CHANNEL_PORT`