debauchee/barrier ? reverse-engineered prompt

Build me a simple open source desktop app that works like a software KVM. I want to use one keyboard and mouse to control multiple computers over the same network, with one machine acting as the server and the others connecting as clients. When I move the mouse to the edge of one screen it should jump naturally to the next machine, and clipboard sharing should work too.

Please make the setup easy and reliable. The server side should have a basic screen layout editor where I can add and arrange client screens, and the client side should just show its screen name, let me enter the server IP, or try auto discovery if possible. Both sides should have a clear running status so it is obvious when everything is connected.

It should be focused on Windows, macOS, and Linux support, and stay simple instead of adding lots of extra features. No drag and drop is needed. Look up current docs online if you need to.