- Add /stats Python API endpoint on NUC (CPU, RAM, Swap, Disk, uptime, load avg)
- Add VitalsBar component in header showing CPU/RAM/Disk mini bars
- Add Overview as new default landing tab with system health, service summary,
recent deployments, quick links, and WhyRating project status
- Poll system stats every 30s, deployments every 30s on overview tab
- Remove standalone WhyRating tab (content moved to Overview)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
