Hasann529/Ecommerce-MERN ? reverse-engineered prompt

Build me a simple ecommerce app with a customer facing site and a backend to manage products and orders.

I want users to be able to browse products, view details, add items to a cart, and go through a basic checkout flow. The app should also support things like user signup and login, a product listing page, a single product page, and a place for admins to add, edit, and remove products. Keep the design clean and modern, and make it feel like a real online store.

Use a MERN stack setup with a separate frontend and backend, and wire the two together so the app actually works end to end. If you need to check current docs or best practices for anything, go ahead and look them up. Please include sensible sample data so the app is usable right away, and make sure the code is organized in a way that would be easy to extend later.