wardakhan-dotcom/shopnest-ecommerce ? reverse-engineered prompt

Build me a full stack ecommerce app called ShopNest where people can browse products, view product details, add items to a cart, and go through a simple checkout flow.

I want the site to feel clean and easy to use, with a modern storefront on the front end and a working backend that handles products, users, and orders. Include basic account features like sign up, log in, and viewing order history. Make sure the cart updates properly and the app can save data instead of acting like a mockup.

Please set it up as a complete MERN project, with the frontend and backend connected so it actually runs end to end. Use sensible sample data if needed, and make the UI look polished enough for a real online store. If anything needs current package or API docs, look them up online and use the latest stable approach.

Keep it practical, working, and ready to run locally.