Built-in operator documentation in the panel: a CSS-only help drawer and Help page so Status checks and domain controls are explained without leaving the panel.
Added:
- **Help** navigation entry and `/help` index page.
- CSS-checkbox help drawer (no extra script): seeded topics for Status (Machine,
- «?» entry points on Status and domain card heads open the matching drawer
Changed:
- [guide.md](docs/guide.md) documents the boundary: in-panel help for card
Full detail: CHANGELOG.md (1.8.0).
