Canteen Management

Moved Patient charges from the Dietary nav group to Finance, matching the prototype -- added a per-item section override to CanteenNavItem/visibleGroups (nav.ts) so an item can be grouped by where a manager looks for it while still being gated on the capability it is actually licensed under (dietary, not a nonexistent finance capability). Added a 3rd KPI (Attendant meals, a real field, honestly zero until F3-11 ships) and a search box (patient name / IP no., client-side over the already-fetched list). Post button label is now dynamic: Post N pending. Tariff column and date-range/MTD/Month statement stay out -- confirmed again with the module owner on 2026-10-12, same reasoning as before.