waleed666-max/iNotebook ? reverse-engineered prompt

Build me a full stack note taking app where users can sign up, log in, and manage their own notes securely.

I want a clean React frontend and a Node and Express backend with MongoDB for storage. Users should be able to create, view, edit, and delete notes after signing in, and the app should keep their data protected with JWT based authentication. Make the login and signup flow feel simple and polished, with proper form validation and basic error handling.

Please set it up so the app works end to end, with the frontend talking to the backend, and use MongoDB Atlas for the database connection. I’d like the main experience to feel like a modern notebook app, easy to use, responsive, and straightforward. If you need to check current docs or best practices while building it, go ahead and look them up online.