vishal071604/FileKeeper ? reverse-engineered prompt

Build me a full stack notes app where people can sign up, log in, and stay signed in with secure cookies and JWT. After logging in, they should be able to create notes, edit them, search through them, pin important ones, delete notes, restore deleted notes, and permanently remove them if they want. The app should have a clean, responsive interface that works well on desktop and mobile, with protected pages so only logged in users can see their notes.

I want the frontend and backend wired together so it feels like a real product, with a simple dashboard, toast messages for actions, and smooth navigation between login, register, and notes views. Please use a modern React frontend and a Node, Express, and MongoDB backend, and make sure the app is ready to run locally with clear environment variables. If you need current setup details, look up the latest docs online first.