Set up CI + visual regression infrastructure for twenty-new-ui:
- Add ci-new-ui.yaml workflow (mirrors ci-ui.yaml for twenty-new-ui)
- Update visual-regression-dispatch.yaml to watch both CI UI and CI New UI,
dispatching to ci-privileged for three Argos projects:
1. Self-hosted twenty-ui pixel diff (existing, unchanged)
2. Self-hosted twenty-new-ui pixel diff (new)
3. Self-hosted twenty-ui vs twenty-new-ui comparison (new)
- Add visual regression documentation to twenty-new-ui README
- Resolve open question 4 (visual regression tooling: Argos confirmed)