v2: channel isolation model, manage-channels skill, refactored channel skills

- Add three-level isolation model (shared session, same agent, separate agent)
  with agent-shared session mode for cross-channel shared sessions
- Create /manage-channels skill for wiring channels to agent groups
- Refactor all 12 v2 channel skills: lean SKILL.md + VERIFY.md + REMOVE.md
  with structured Channel Info section for platform-specific metadata
- Create /add-discord-v2 skill (was missing)
- Add step 5a to setup SKILL.md invoking /manage-channels after channel install
- Update setup/verify.ts to check all 12 channel token types
- Add docs/v2-isolation-model.md explaining the isolation model
- Update v2-checklist.md and v2-setup-wiring.md to reflect completed work

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

.claude/skills/add-slack-v2/REMOVE.md

@@ -0,0 +1,6 @@
+# Remove Slack
+
+1. Comment out `import './slack.js'` in `src/channels/index.ts`
+2. Remove `SLACK_BOT_TOKEN` and `SLACK_SIGNING_SECRET` from `.env`
+3. `npm uninstall @chat-adapter/slack`
+4. Rebuild and restart

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

@@ -3,15 +3,15 @@ name: add-slack-v2
 description: Add Slack channel integration to NanoClaw v2 via Chat SDK.
 ---
 
-# Add Slack Channel (v2)
+# Add Slack Channel
 
-This skill adds Slack support to NanoClaw v2 using the Chat SDK bridge.
+Adds Slack support to NanoClaw v2 using the Chat SDK bridge.
 
-## Phase 1: Pre-flight
+## Pre-flight
 
-Check if `src/channels/slack.ts` exists and the import is uncommented in `src/channels/index.ts`. If both are in place, skip to Phase 3.
+Check if `src/channels/slack.ts` exists and the import is uncommented in `src/channels/index.ts`. If both are in place, skip to Credentials.
 
-## Phase 2: Apply Code Changes
+## Install
 
 ### Install the adapter package
 
@@ -33,21 +33,19 @@ import './slack.js';
 npm run build
 ```
 
-## Phase 3: Setup
+## Credentials
 
-### Create Slack App (if needed)
+### Create Slack App
 
-If the user doesn't have a Slack app:
-
-> 1. Go to [api.slack.com/apps](https://api.slack.com/apps) and click **Create New App** > **From scratch**
-> 2. Name it (e.g., "NanoClaw") and select your workspace
-> 3. Go to **OAuth & Permissions** and add Bot Token Scopes:
->    - `chat:write`, `channels:history`, `groups:history`, `im:history`, `channels:read`, `groups:read`, `users:read`, `reactions:write`
-> 4. Click **Install to Workspace** and copy the **Bot User OAuth Token** (`xoxb-...`)
-> 5. Go to **Basic Information** and copy the **Signing Secret**
-> 6. Go to **Event Subscriptions**, enable events, and subscribe to:
->    - `message.channels`, `message.groups`, `message.im`, `app_mention`
-> 7. Set the Request URL to your webhook endpoint (e.g., `https://your-domain/webhook/slack`)
+1. Go to [api.slack.com/apps](https://api.slack.com/apps) and click **Create New App** > **From scratch**
+2. Name it (e.g., "NanoClaw") and select your workspace
+3. Go to **OAuth & Permissions** and add Bot Token Scopes:
+   - `chat:write`, `channels:history`, `groups:history`, `im:history`, `channels:read`, `groups:read`, `users:read`, `reactions:write`
+4. Click **Install to Workspace** and copy the **Bot User OAuth Token** (`xoxb-...`)
+5. Go to **Basic Information** and copy the **Signing Secret**
+6. Go to **Event Subscriptions**, enable events, and subscribe to:
+   - `message.channels`, `message.groups`, `message.im`, `app_mention`
+7. Set the Request URL to your webhook endpoint (e.g., `https://your-domain/webhook/slack`)
 
 ### Configure environment
 
@@ -60,22 +58,17 @@ SLACK_SIGNING_SECRET=your-signing-secret
 
 Sync to container: `mkdir -p data/env && cp .env data/env/env`
 
-### Build and restart
+## Next Steps
 
-```bash
-npm run build
-launchctl kickstart -k gui/$(id -u)/com.nanoclaw  # macOS
-# systemctl --user restart nanoclaw  # Linux
-```
+If you're in the middle of `/setup`, return to the setup flow now.
 
-## Phase 4: Verify
+Otherwise, run `/manage-channels` to wire this channel to an agent group.
 
-> Add the bot to a Slack channel, then send a message or @mention the bot.
-> The bot should respond within a few seconds.
+## Channel Info
 
-## Removal
-
-1. Comment out `import './slack.js'` in `src/channels/index.ts`
-2. Remove `SLACK_BOT_TOKEN` and `SLACK_SIGNING_SECRET` from `.env`
-3. `npm uninstall @chat-adapter/slack`
-4. Rebuild and restart
+- **type**: `slack`
+- **terminology**: Slack has "workspaces" containing "channels." Channels can be public (#general) or private. The bot can also receive direct messages.
+- **how-to-find-id**: Right-click a channel name > "View channel details" — the Channel ID is at the bottom (starts with C). Or copy the channel link — the ID is the last segment of the URL.
+- **supports-threads**: yes
+- **typical-use**: Interactive chat — team channels or direct messages
+- **default-isolation**: Same agent group for channels where you're the primary user. Separate agent group for channels with different teams or sensitive contexts.

.claude/skills/add-slack-v2/VERIFY.md

@@ -0,0 +1,3 @@
+# Verify Slack
+
+Add the bot to a Slack channel, then send a message or @mention the bot. The bot should respond within a few seconds.