- Add MobileOrdersPage with search bar, horizontal status filter chips
(All/Pending/Processing/Shipped/Delivered/Cancelled), order count
display, OrderCard list at 160px height, pull-to-refresh, and
\_detailPageActive guard to suppress behind-route SnackBars
- Add MobileOrderDetailPage wrapping shared OrderDetailPanel as a
StatefulWidget with local controller listener for SnackBar feedback,
confirmation dialog before status changes, haptic feedback
(mediumImpact for status, lightImpact for note additions), and SafeArea
- Wire Orders tab (case 3) in MobileShell to MobileOrdersPage; remove
unused feature_orders direct import from shell
- Add 6 new Stage 6B widget tests: Orders tab search bar, status filter
chips, order count, order card navigation to detail, confirmation dialog
for status change, back navigation returning to orders list
- Update build_execution_tracker.md and master_development_brief.md
Tests: 20/20 kell_mobile, 115/115 feature_orders — all passing
Analyze: dart analyze --fatal-infos — no issues found