wallentx/antigravity-cli-termux ? reverse-engineered prompt

Build me a Termux friendly version of the Antigravity CLI that I can install on Android and run with a single agy command.

I want it to be fully standalone, so it works anywhere in Termux without wrapper scripts, and it should clean up the environment before launching the main binary so it does not clash with Termux libraries. It should also handle updates in place, so if I run the update command it replaces both the launcher and the patched engine safely, with a backup and rollback if something fails.

Make the installer smart enough to check the device architecture and whether the CPU supports the newer ARM features it needs, then fall back to qemu if that is already available. If you need to look up current docs or compatibility details online, go ahead. Keep it focused on native Termux, and make the install experience as simple as possible for someone just pasting a curl command into the terminal.