Design for portable dev environment commands:
- core dev install/boot/shell/serve/test/update/status/stop
- core dev claude - sandboxed AI session with auth forwarding
- Image sources: GitHub Releases, Container Registry, CDN
- Mount & serve with auto-detection
- Test config via .core/test.yaml
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
