Replace the catch-all placeholder with an AppShell that renders one
primary nav per breakpoint (chosen with matchMedia via useBreakpoint):
a dark pill bottom bar below 768 px, a 96 px rail with the "M" mark at
768-1199 px, and a 208 px sidebar with the MealQuest wordmark and the
"Our kitchen / Shared household" card at 1200 px and up. Nav order is
Home, Plan, Discover, Quick, Settings; NavLink marks the active item
aria-current="page", with nested Plan and Settings paths keeping their
parent current. The mobile scroll area reserves 100 px plus the safe
area beneath its content.
Register every handoff route plus /settings/household,
/settings/regulars and /settings/calendar, each with a placeholder
heading. Remove the default body margin so the shell fills the viewport.
Tests force each breakpoint with a matchMedia mock and assert the
routes, nav order, each layout's structure, aria-current and the
mobile bottom padding from the stylesheet.
Maestro task: 42a4695a-6bd0-49a1-925e-387858dbee48
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
