The fixed bottom tab bar (MobileTabBar) was rendered app-wide on
screens <768px, duplicating navigation that already exists in the
header/hamburger menus.
- unmount <MobileTabBar /> in App.tsx and drop its import
- delete components/layout/MobileTabBar.tsx (no remaining references)
- drop the max-md:pb-24 clearance in PageLayout (Header.tsx) that only
existed to keep page content above the removed fixed bar
Desktop and header-menu navigation are unaffected; mobile pages keep a
full-height viewport without dead bottom padding.
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