v2: add Chat SDK channel adapters and skills for 11 platforms

Thin wrapper adapters + SKILL.md for Slack, Telegram, GitHub, Linear,
Google Chat, Teams, WhatsApp Cloud API, Resend, Matrix, Webex, iMessage.
All follow the same pattern as discord-v2.ts: readEnvFile → create*Adapter
→ createChatSdkBridge → registerChannelAdapter.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.claude/skills/add-imessage-v2/SKILL.md

@@ -0,0 +1,86 @@
+---
+name: add-imessage-v2
+description: Add iMessage channel integration to NanoClaw v2 via Chat SDK. Local (macOS) or remote (Photon API) mode.
+---
+
+# Add iMessage Channel (v2)
+
+This skill adds iMessage support to NanoClaw v2 using the Chat SDK bridge. Supports local mode (macOS with Full Disk Access) and remote mode (via Photon API).
+
+## Phase 1: Pre-flight
+
+Check if `src/channels/imessage-v2.ts` exists and the import is uncommented in `src/channels/index.ts`. If both are in place, skip to Phase 3.
+
+## Phase 2: Apply Code Changes
+
+### Install the adapter package
+
+```bash
+npm install chat-adapter-imessage
+```
+
+### Enable the channel
+
+Uncomment the iMessage import in `src/channels/index.ts`:
+
+```typescript
+import './imessage-v2.js';
+```
+
+### Build
+
+```bash
+npm run build
+```
+
+## Phase 3: Setup
+
+### Local Mode (macOS)
+
+> **Requirements**: macOS with Full Disk Access granted to your terminal/Node.js process.
+>
+> 1. Go to **System Settings** > **Privacy & Security** > **Full Disk Access**
+> 2. Add your terminal app (Terminal, iTerm2, etc.) or the Node.js binary
+> 3. The adapter reads directly from the iMessage database on disk
+
+### Remote Mode (Photon API)
+
+> 1. Set up a [Photon](https://photon.im) account
+> 2. Get your server URL and API key
+
+### Configure environment
+
+**Local mode** — add to `.env`:
+
+```bash
+IMESSAGE_ENABLED=true
+IMESSAGE_LOCAL=true
+```
+
+**Remote mode** — add to `.env`:
+
+```bash
+IMESSAGE_LOCAL=false
+IMESSAGE_SERVER_URL=https://your-photon-server.com
+IMESSAGE_API_KEY=your-api-key
+```
+
+Sync to container: `mkdir -p data/env && cp .env data/env/env`
+
+### Build and restart
+
+```bash
+npm run build
+launchctl kickstart -k gui/$(id -u)/com.nanoclaw  # macOS
+```
+
+## Phase 4: Verify
+
+> Send an iMessage to the account running NanoClaw. The bot should respond within a few seconds.
+
+## Removal
+
+1. Comment out `import './imessage-v2.js'` in `src/channels/index.ts`
+2. Remove iMessage env vars from `.env`
+3. `npm uninstall chat-adapter-imessage`
+4. Rebuild and restart