Regression: VS Code extension codex.exe requires AVX-512 and crashes on Zen 3 (Ryzen 5000)

What version of the IDE extension are you using?

1.115.0

What subscription do you have?

Plus

Which IDE are you using?

VS Code

What platform is your computer?

Windwos 11

What issue are you seeing?

Codex crashes at startup because the binary requests CPU capabilities not present on Zen 3 CPUs.
Fatal Error: HW capability found: 0x..., but HW capability requested: 0x200000 0x00.
From behavior and CPU feature mapping, this appears to be an AVX-512 requirement in the shipped [codex.exe].

What steps can reproduce the bug?

1. Install/update to the affected canary/alpha version of openai.chatgpt.
2. Open VS Code and start Codex.
3. Observe immediate startup failure with HW capability requested error.

What is the expected behavior?

Codex should run on CPUs without AVX-512 (or gracefully provide a compatible binary / fallback).

Additional information

Please publish a Windows build compatible with non-AVX-512 CPUs (or document minimum CPU instruction requirements clearly if intentionally changed).