Codex cannot find and use basic tools like ls, dir, echo

What version of Codex is running?

codex-cli 0.22.0

Which model were you using?

local open source models

What platform is your computer?

Microsoft Windows NT 10.0.26100.0 x64

What steps can reproduce the bug?

ask codex to check files in the folder

What is the expected behavior?

codex should run the dir command and list all files in the folder.

What do you see instead?

<img width="260" height="122" alt="Image" src="https://github.com/user-attachments/assets/221c7f92-d085-4e7b-bf3a-7a35e49c0784" />

Additional information

codex can find and run python.

<img width="361" height="124" alt="Image" src="https://github.com/user-attachments/assets/eb3e369b-79e4-4a05-aaaf-b00e4efaa660" />