Brings in prod_v3 5084623 on top of production 9e8a236. Merged without
conflicts: prod_v3's base (7ead60c) is an ancestor of production, and
production's extra tab-bar refinements (17c7ae6) touch disjoint regions.
Brings in main_v2 17c7ae6 (tab bar sizing, inventory actions, date picker
proportions, stats lead time).
Conflicts resolved in favour of main_v2, which deliberately removed the
'تغییر موجودی' top button (nav lives in the tab bar / InventoryTopNav now)
and rewrote the proforma date field. Dropped the now-unused Button import.
Merges main_v2 a110741 (mobile UI optimizations) into production and
reinstates the mobile bottom navigation that f0e4243 had removed.
Conflicts in DashboardPage, QuoteCard and InventoryPage resolved in
favour of main_v2's mobile-first markup, keeping production's newer
design system (Button variant="primary" on InventoryPage).
f0e4243's removal was reverted in effect: MobileTabBar is restored and
remounted in App.tsx, and PageLayout regains max-md:pb-24 clearance so
content is not hidden behind the fixed bar.
MMD