Guides storefront UI for webshop-robert-web—single home at `/`, mobile-first layout, MUI theme, and card-based sections. Use when changing the shop front, theme, or sections; the codebase has no alternate design routes or A/B switcher.
Describes how webshop-robert-web integrates with the Spring API—catalog GET endpoints, JWT customer auth, basket mutations, DTO alignment, and placeholder images. Use when extending API calls, cart, auth, or when the prompt references frontend-backend integration.