yashika-cmd/queueless ? reverse-engineered prompt

Build me a full stack queue management app for a college or service desk where students can sign up, log in, browse available services like library, admin office, canteen, or exam cell, and join a queue with one click. After joining, they should get a token right away and be able to see their live position, how many people are ahead of them, an estimated wait time, and when their turn is likely to come up. They should also be able to leave the queue or cancel their token, and see their past queue history.

I also need an admin side with a secure login where staff can see all active queues in real time, call the next person, mark someone as served, or skip a token. Show simple stats like how many were served today, how many are waiting, who is currently being served, and the average service time. Make it feel responsive and modern on mobile and desktop, and use JWT based auth with a MongoDB backed backend. If you need anything unclear, look up the current docs online first.