sayed-swe/MERN_EComerce ? reverse-engineered prompt

Build me a simple e commerce web app with a customer facing frontend and a backend API.

I want users to be able to browse products, search or filter them, view a product detail page, add items to a cart, update quantities, and place an order. It should also have basic account features like sign up, log in, and a way to see past orders. If it makes sense, include a simple admin area for adding, editing, and removing products.

Make it feel clean and usable, with a modern store style and responsive design for desktop and mobile. Set up the full app so it runs from the frontend and backend folders, and wire the data flow end to end. Use current best practices, and if you need to check anything, look up current docs online first.