charlie754/Game-Optimizer-CPUs-Threads-Optimizer ? reverse-engineered prompt

Build me a small Windows tray app called Game Optimizer that lets me pick a game and automatically keeps that game on the best CPU cores while it is running. I want it to work for CPUs with split core layouts, like AMD X3D or Intel P and E cores, and I want it to use Windows CPU Sets instead of affinity masks so it only affects that one game and not the whole PC. It should also catch child processes the game launches, and then clear everything as soon as the game closes.

Please make it feel simple, with a first run screen that detects my CPU layout and shows what groups are available, plus a settings window where I can choose the default group and see any helpful info. Keep it local, no login, no telemetry, no network stuff. If WebView2 is missing, it should still start and just fall back cleanly. I only need this on Windows 10 or 11, x64.