Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- Remove hatk new scaffolding command (~600 lines) from CLI
- Point users to vp create github:hatk-dev/hatk-template-starter
- Update quickstart with vp prerequisites and new create flow
- Update CLI docs, scaffold docs, project structure docs
- Add pronunciation to site hero
- Disable memory diagnostics logging

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Listen for #identity events on the relay and update the handle in
_repos for tracked DIDs when it changes.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>