saquib4292/Mern-E-commerce-website ? reverse-engineered prompt

Build me a full e commerce website where people can sign up, log in, browse products, search and filter items, open a product page, and add things to their cart. I want users to be able to change quantities, remove items, save multiple delivery addresses, and place a cash on delivery order that ends on a simple success page.

Also include an admin area where I can add new products, edit existing ones, and view the product list. Please make it work as a complete full stack app with a clean React frontend and a Node, Express, MongoDB backend, with login protection using JWT.

Set it up so I can run the backend and frontend locally, and if you need to check current setup details or docs, look them up online. Keep the design simple and modern, and make sure the whole flow feels smooth from browsing to checkout.