- Sync `MobileNav` items and icons with desktop `Sidebar` for consistency.
- Standardize menu icons using `lucide-react` across all navigation components.
- Add a spacer div in `main-layout.tsx` to ensure proper bottom spacing between content and the fixed footer.
- Remove redundant 'aria-hidden' attribute in `MobileNav` to fix accessibility warnings.
- Fix 'Logout' button layout in mobile menu for better responsiveness.