vijaygopale23/Smart-Canteen-Queue-Management-System ? reverse-engineered prompt

Build me a smart canteen management web app where customers can browse verified canteens, view menus, customize thali meals, add items to a cart, book a pickup slot, and track their order status with a QR code for pickup. Vendors should get a dashboard where they can see active orders, revenue, and the next slot actions, then move orders through simple stages like accepted, preparing, ready, and collected. Admins should be able to verify vendors and manage the shared thali templates for the whole system.

I want it to feel clean and easy to use on both customer and vendor sides. Use a modern React frontend and a Node and Express backend, with Firebase for authentication, database, and storage. Please set it up so the main flows work end to end, including order history, menu management, and secure Firestore rules. If you need to look up current Firebase or React docs online while building, go ahead.