hasib260-r/NSU_Companion ? reverse-engineered prompt

Build me a campus cafeteria app for NSU that lets students and faculty browse live menus, place preorders, pay securely, and pick up food with a unique order token instead of waiting in line.

I also need separate views for vendors and admins. Vendors should be able to manage menu items, update availability and prices, see incoming orders, and view basic sales info. Admins should be able to manage users, monitor activity, and see reports or logs. The app should show order status updates in real time, including preparation progress and a countdown, and send notifications when an order changes.

Make it feel polished and mobile friendly, with a clean dashboard style. Use a React frontend and a Node and Express backend, with authentication, database storage, and real time updates. If you need to look up current docs online, feel free to do that. Set it up so I can run the frontend and backend locally with clear environment files and sensible defaults.