🚨 Install Script Test Failed

The install script test workflow failed.

**Workflow Run:** https://github.com/github/gh-aw/actions/runs/29153475200
**Triggered by:** pull_request
**Commit:** bfe0b3a

## Details

The install script testing workflow detected failures when testing the `install-gh-aw.sh` and `install-gh-aw.ps1` scripts across different platforms.

Please review the workflow logs to identify which platform(s) failed and investigate the issue.

## Affected Platforms

This workflow tests the install script on:
- Ubuntu (latest and 22.04)
- macOS (latest ARM and Intel-based 13)
- Windows (latest)

## Next Steps

1. Check the [workflow run logs](https://github.com/github/gh-aw/actions/runs/29153475200) for detailed error messages
2. Review changes to `install-gh-aw.sh` and `install-gh-aw.ps1` that may have caused the failure
3. Test the install script locally on the affected platform(s)
4. Fix the issue and verify with `scripts/test-install-script.sh`

---
*This issue was automatically created by the install script test workflow.*

Start with the linked workflow run logs to identify the failing platform and error, then review install-gh-aw.sh and install-gh-aw.ps1 for changes related to that failure. Reproduce the problem locally where possible and run scripts/test-install-script.sh; done means the affected platform tests pass across the supported install-script matrix.

Written by the indexing model from the issue text.