Notes
Keep runbooks, checklists, and deployment notes next to the server they're about.

What it does
- Sandboxed to a ~/notes folder that cannot be escaped (unlike the unrestricted Finder).
- Two-pane UI with folder navigation, breadcrumbs, and create/rename/delete.
- Plain-text editor — save with the button or Cmd/Ctrl+S.
- Persists across restarts.