rushiltailor9/Auth-MERN- ? reverse-engineered prompt

Build me a simple full stack login and signup app where people can create an account, sign in, stay logged in, and log out.

I want a clean frontend for the forms and a backend that handles user accounts, password security, and basic protected user access. After login, show a simple home page or dashboard that only signed in users can see. Add clear success and error messages for things like missing fields, wrong password, and duplicate email.

Keep it easy to run locally, with the frontend and backend set up so I can start both and test the flow end to end. If you need to check the current best way to wire things together, look up the latest docs online.

Make it feel polished, simple, and complete enough that someone could clone it and immediately try the full auth flow.