P-Suraj/cloud-print-platform ? reverse-engineered prompt

Build me a cloud based print kiosk system for university copy shops. Students should be able to scan a QR code on their phone, upload a PDF in a mobile friendly web app, choose page count, copies, color or black and white, and simplex or duplex, then pay online with Razorpay or UPI and get real time status updates until the job is printed.

I need the full flow working, a frontend for the student checkout and shopkeeper view, a backend API for jobs, payments, pricing, and printer queue handling, and a Windows desktop agent that listens for new print jobs, downloads the PDF, prints it silently, and clears local files after printing. Use Supabase for storage and live updates if that fits best, and make sure the system can recover if the agent or printer computer restarts.

Keep it polished, mobile first, and ready for multiple shops. If you need to, look up current docs online for any setup details.