Ravitheja1289-dot/Zipline ? reverse-engineered prompt

Build me a Flutter app called Zipline for Android and Windows that lets me securely sync my clipboard, files, folders, and Android notifications over my local WiFi without using any cloud services.

I want the Windows app to show a rotating QR code for pairing, and the Android app to scan it and connect right away. After pairing, clipboard changes should sync both ways in the background, file transfers should be fast, and notifications from Android should appear on the Windows side. Keep everything privacy first, with end to end encryption, no accounts, no tracking, and no internet required as long as both devices are on the same network.

Please make the UI look clean and modern with a dark Material 3 feel, and include sensible local storage for history and settings. If you need current Flutter or plugin docs, look them up online and wire it up in a way that runs well on both platforms.