kuy124/AutoResChanger ? reverse-engineered prompt

Build me a lightweight Windows desktop app that sits in the system tray and automatically changes my monitor resolution and refresh rate when certain programs or games open, then switches everything back when I close them.

I want to be able to add profiles by picking an app exe, choosing which display it should affect, and setting a resolution and refresh rate, with support for multiple monitors. It should show the display modes my monitor actually supports, let me type custom values too, and have a safe test button that tries the mode for a short time and reverts if I do nothing.

Please make it feel like a small native Windows utility, not a big framework app. It should start with Windows if I choose that, only allow one copy to run, and keep a simple clean interface with useful validation messages and optional dark mode. If you need to check current Windows or CMake docs online, go ahead.