Add Gmail Integration

This skill adds Gmail support to NanoClaw — either as a tool (read, send, search, draft) or as a full channel that polls the inbox.

Phase 1: Pre-flight

Check if already applied

Check if src/channels/gmail.ts exists. If it does, skip to Phase 3 (Setup). The code changes are already in place.

Ask the user

Use AskUserQuestion:

AskUserQuestion: Should incoming emails be able to trigger the agent?

• Yes — Full channel mode: the agent listens on Gmail and responds to incoming emails automatically
• No — Tool-only: the agent gets full Gmail tools (read, send, search, draft) but won't monitor the inbox. No channel code is added.