- Replace the fixed min-width horizontal-scroll shell with a stacked
mobile layout (h-dvh) that keeps the desktop three-column layout at md+
- Add MobileTopBar with hamburger menu, brand, and theme toggle reachable
without opening the drawer
- Convert SideNav into shared content plus a left-sheet hamburger drawer;
close on navigation link tap, backdrop, or Escape
- Make the board swipeable on mobile: one lane per screen via snap paging,
with a CategoryChips rail that tracks the active lane (IntersectionObserver)
and glides to it on tap; lanes go full-width below md
- Turn the Scheduled panel into a bottom dock bar + bottom sheet on mobile
(keeps overdue/today urgency badges), desktop aside unchanged at md+
- Compact board chrome for phones: icon-only Summary/View buttons, smaller
title/padding, full-width AddCategoryLane as a snap page under empty state
- Allow tall dialogs to scroll within dvh so edit forms and the AI summary
stay usable on small screens; make admin user table horizontally scrollable
- Support configurable ThemeToggle menu side/align so it opens downward in
the mobile top bar instead of off-screen
- Add CDP-based screenshot script and reference shots for mobile/tablet/desktop
