- Add a Projects entry with icon and test id in the mobile More sheet actions
- Extend MobileNavBar props with onViewAllProjects and trigger it via the shared more-sheet action handler
- Wire App to pass handleViewAllProjects into MobileNavBar so the new action opens project selection
- Add test coverage for rendering the Projects item and invoking its callback while closing the sheet
- Export viewport utilities and add a new MobileNavBar component for core mobile navigation actions
- Integrate the bottom nav into App layout and simplify Header rendering when mobile navigation is active
- Add comprehensive mobile bottom-nav styling and spacing updates in the shared dashboard stylesheet
- Add component and CSS regression tests for mobile nav behavior, including escape-key interaction coverage
- Document the mobile bottom navigation UX and behavior in the dashboard README
