vankampranaypranay-star/sample_mern_app ? reverse-engineered prompt

Build me a simple MERN starter app that lets a user manage a small list of items, like notes or tasks.

I want the app to have a clean home screen, a form to add a new item, a list of saved items, and easy controls to edit and delete them. The data should be stored in MongoDB, with a backend API that handles the usual create, read, update, and delete actions. If the current repo already has some server code, please fill in the missing pieces and make it work end to end.

Please set up the app so I can run it locally without a lot of extra steps, and include any needed environment variables or setup notes. Use current best practices, and look up the latest docs online if you need to. Keep the UI simple and usable, and make sure the frontend talks properly to the backend.