codex app installs ARM-only Codex.app on Intel macOS, then fails with incorrect executable format

What version of Codex is running?

codex-cli 0.98.0

What platform is your computer?

macOS 26.2, x86_64 (Intel)

What issue are you seeing?

Running codex app downloads and installs Codex.app, then launch fails with:

The application /Applications/Codex.app cannot be opened because it has an incorrect executable format.
Error: open -a /Applications/Codex.app ... exited with exit status: 1

Steps to reproduce

1. On Intel macOS (uname -m => x86_64), run codex app
2. Installer downloads and mounts DMG
3. App is copied to /Applications/Codex.app
4. CLI tries to launch app and fails with incorrect executable format

Observed technical details

• /Applications/Codex.app/Contents/MacOS/Codex is Mach-O 64-bit executable arm64
• Host architecture is x86_64

Expected behavior

codex app should check architecture before download/install and either:

• block with a clear message (Codex Desktop currently supports Apple Silicon only), or
• install the correct architecture build if available

Why this matters

Current behavior spends time/bandwidth installing a non-runnable app and only fails at launch.