Codex cannot run on Antigravity IDE 2.0

What version of the IDE extension are you using?

26.513.21555

What subscription do you have?

Plus

Which IDE are you using?

Antigravity

What platform is your computer?

Darwin 25.4.0 arm64 arm

What issue are you seeing?

After updating Antigravity to Antigravity IDE 2.0, I tried to install Codex. However, after the installation, when I tried to run the extension, it showed:

<img width="522" height="518" alt="Image" src="https://github.com/user-attachments/assets/ce52c68f-e55e-40c4-8a48-b54bc0e5f1ec" />

I tried the same version on VSCode without any issue.

What steps can reproduce the bug?

1. Update Antigravity to Antigravity IDE 2.0.
2. All the extensions are removed, reinstall Codex. As Codex is not directly showed in Antigravity, you should open a browser and type antigravity-ide:extension/openai.chatgpt

1. After Codex is installed, quit Antigravity first.
2. Run Antigravity again, then try to use the extension, the warning will show.

What is the expected behavior?

Mac OS will show:

Malware Blocked and Moved to Bin
"codex" was not opened because it contains malware. This action did not harm your Mac.

Additional information

_No response_