Locked Computer Use cannot be enabled on Intel Mac

What issue are you seeing?

Issue: Locked Computer Use cannot be enabled on Intel Mac

Device:

• Mac: Intel
• macOS: 15.6.1
• Codex App: 26.611.62324
• Architecture: x86_64

Problem:
In Codex Settings > Computer Use, enabling Locked Computer Use fails with:
“无法更新‘锁定操作’设置” / “Unable to update Locked Computer Use setting”.

Checks performed:

• Codex is installed in /Applications
• Current macOS user is an admin
• Screen Recording permission is enabled for Codex
• Accessibility permission is enabled for Codex
• No MDM enrollment detected
• /Library/Security/SecurityAgentPlugins does not contain a Codex authorization plugin

Code signing checks:
codesign --verify --verbose=4 /Applications/Codex.app
=> invalid signature (code or signature have been modified)
In architecture: x86_64

codesign --verify --verbose=4 /Applications/Codex.app/Contents/Resources/native/browser-use-peer-authorization.node
=> invalid signature (code or signature have been modified)
In architecture: x86_64

Additional note:
The default Codex.dmg from https://persistent.oaistatic.com/codex-app-prod/Codex.dmg appears to be unsupported on this Intel Mac. The x64 appcast package
https://persistent.oaistatic.com/codex-app-prod/Codex-darwin-x64-26.611.62324.zip
runs as x86_64 but still reports invalid signature.

What steps can reproduce the bug?

1. Use an Intel Mac running macOS 15.6.1.
2. Install Codex App x64 version 26.611.62324 from the official x64 appcast package:

https://persistent.oaistatic.com/codex-app-prod/Codex-darwin-x64-26.611.62324.zip

1. Open Codex and sign in.
2. Go to Settings > Computer Use.
3. Make sure Screen Recording and Accessibility permissions are already enabled for Codex in macOS System Settings.
4. Try to enable Locked Computer Use / 锁屏操作.
5. Codex shows an error: “无法更新‘锁定操作’设置”.
6. No macOS password or Touch ID authorization prompt appears.
7. Running codesign verification shows:

codesign --verify --verbose=4 /Applications/Codex.app
=> invalid signature (code or signature have been modified)

What is the expected behavior?

_No response_

Additional information

_No response_