- rename `supplier` field to `suppliers` in OrderItem interface and PocketBase expand queries
- complete visual rebrand to warm cream (#f2f1ed) and dark brown (#26251e) color palette with custom CSS variables
- add accessibility improvements: skip-to-main content link, focus-visible styles, reduced motion support, and proper ARIA labels
- update all component styling to match new theme, including offline indicator, install prompt, login page, modals, map, bottom nav and global CSS
- standardize status colors: use green for success, red for errors, retain orange (#f54e00) as primary accent CTAs