mohankumarelec/airgapped-qr-code-transfer ? reverse-engineered prompt

Build me a simple web app that lets two devices transfer a file without internet by using QR codes.

I want one page for sending and one page for receiving. On the sender side, the user should pick a file, the app should compress it, break it into chunks, and show QR codes one after another so another device can scan them. On the receiver side, the user should open the camera, scan each QR code, rebuild the file, and download it when the transfer is finished.

Keep it easy to use, with clear start buttons, progress feedback, and basic instructions on screen. It should work in a modern browser and feel lightweight and reliable for offline use. If you need to check anything, look up the current docs online first.