Bushra-naeem/mern-ecommerce ? reverse-engineered prompt

Build me a simple full stack ecommerce store. I want a customer side where people can browse products, open a product page, add items to a cart, create an account or sign in, and complete checkout with PayPal. Please support product image uploads, store everything in MongoDB, and use JWT auth so the login flow feels like a normal modern shop.

Keep it as a frontend plus backend app that I can run locally with one dev command. Set it up so it reads the usual env values for the database connection, JWT secret, PayPal client id, port, and node environment. I would also like some sample products or seed data so it is easy to test right away, and the UI should feel clean and usable on desktop and mobile.

If something is missing, use sensible ecommerce defaults and look up current docs online if you need to.