`rust-release.yml` just failed:
https://github.com/openai/codex/actions/runs/18167317356/job/51714366768
The error is:
> Error: Unable to locate executable file: pnpm. Please verify either
the file path exists or the file can be found within a directory
specified by the PATH environment variable. Also check the file mode to
verify the file is executable.
We need to install `pnpm` first like we do in `ci.yml`:
f815157dd9/.github/workflows/ci.yml (L17-L25)