Adds DateWheelPicker (src/components/ui/date-wheel-picker.tsx) — an iOS-style bottom-sheet with scroll-snap day/month/year columns — and swaps out the 6 remaining <input type="date"> usages in PetForm (birthday, adoptedAt) and HealthDashboard (weight log, vet visit, vaccine given/due dates). Closes the last open DEBUG-List.md item. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>