AvenCores/open-antigravity-patcher ? reverse-engineered prompt

Build me a simple open source Python tool that helps people use Antigravity even when it is blocked by region checks.

I want it to find installed Antigravity IDE, Antigravity CLI, and the Google Antigravity extension automatically, then patch the local files so the app stops showing the region and eligibility errors. It should make backups before changing anything, let me undo the changes later, and check for updates when it starts. Please include a clean menu driven interface that feels easy to use for normal people, with clear messages about what it found and what it changed.

It should work on Windows first, and also handle Linux where possible. If you need to look up current docs online, go ahead. Make sure it is packaged so someone can run it without digging through code, and keep the whole thing open source and straightforward to maintain.