wellcomeRehman/shopstack-mern ? reverse-engineered prompt

Build me a simple online shop app for buying products, with a clean storefront, product listings, product detail pages, a cart, and a basic checkout flow.

I want customers to be able to browse items, search or filter products, add things to the cart, change quantities, and place an order. It should also have a basic admin area where I can add, edit, and remove products, and see orders. Use a modern full stack setup and make it feel like a real ecommerce site, not just a demo.

Please make the UI polished and easy to use on mobile and desktop. Set up sensible navigation, reusable components, and the basic backend data handling needed for products, users, cart, and orders. If you need to check current docs or best practices for the stack, go ahead and look them up.