santhoshikumari7/MERN-grocery-app ? reverse-engineered prompt

I want a full stack grocery app where people can browse groceries, search for items, add things to a cart, and place an order. Make the interface clean and easy to use on both desktop and mobile, with a simple shopping experience that feels polished.

Please also include a basic way to manage products from the backend, so items can be added, edited, and removed easily. If it makes sense, add simple user sign in and keep the flow smooth from the frontend to the API.

Set up both the client and backend so the app runs properly as a complete project, and make sure the data is wired through cleanly. If you need to look up current docs online for anything, go ahead.