- Add zroc-planner UI page with VM selector, journal retention slider (1h-30d),
WAN compression input, and live bandwidth/journal/mirror storage estimates
- Add CSV and PDF export for planning reports
- Add light/dark mode toggle in TopBar with localStorage persistence
- Wire theme via CSS custom properties for full Tailwind opacity support
- Add Planner route and sidebar entry
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>