App-Builders-Gang/logitech-layout-auto-switcher ? reverse-engineered prompt

Build me a small Python tool for Windows and macOS that watches for a Logitech keyboard being moved to a different computer, like when a KVM switch, Easy Switch channel, or cable hands it off, and then automatically changes the keyboard to the right layout for that machine.

I want it to fix the real keyboard mode, not just remap keys, so Mac and Windows layouts stay correct without me ever having to hold Fn+O or Fn+P again. It should run quietly in the background, start automatically after login, and work headless with no account or manual setup. Please include a simple doctor style check that tells me whether the keyboard was found and whether anything is wrong. If you need current docs or protocol details for Logitech HID++ behavior, look them up online. Use clean packaging and make the install as easy as possible for each platform.