Add Webex Channel

Adds Cisco Webex support via the Chat SDK bridge.

Install

NanoClaw doesn't ship channels in trunk. This skill copies the Webex adapter in from the channels branch.

Pre-flight (idempotent)

Skip to Credentials if all of these are already in place:

• src/channels/webex.ts exists
• src/channels/index.ts contains import './webex.js';
• @bitbasti/chat-adapter-webex is listed in package.json dependencies

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

1. Fetch the channels branch