shinyflvre/Mate-Engine ? reverse-engineered prompt

Build me a free desktop pet app like Desktop Mate, but lighter and more moddable, with support for custom VRM avatars. I want a little character that can sit on windows and the taskbar, idle, react when I drag it around, and play cute animations like dancing and expression changes. It should be easy to swap in new models and custom content, and the app should feel smooth and not use a ton of memory.

Please also make the settings simple, with options for always on top, animation behavior, and basic appearance tweaks. If it makes sense, include support for multiple languages and a clean little system tray or menu so it feels polished. Look up current docs online if you need to, and build it so it works like a real desktop companion people can just launch and enjoy.