new Date("YYYY-MM-DD") parses as UTC midnight per ES2015. toLocaleDateString()
then displays in local time, shifting the date back one day for users west of
UTC. This caused the list view and edit dialog to show different dates.
Fixed in: MaintenanceRecordsList (display + sort + delete confirm),
VehicleDetailPage (display + sort), VehicleDetailMobile (display + sort),
MaintenanceRecordForm (receipt title), OwnershipCostsList (formatDate).
Sorting now uses string comparison (YYYY-MM-DD is lexicographically sortable).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
The parseServiceDate function used toISOString().split('T')[0] which converts
to UTC, shifting dates by one day depending on timezone. Standard parsing now
uses getFullYear/getMonth/getDate (local time). MM/DD/YYYY parsing now formats
directly from regex groups without round-tripping through a Date object.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
