Athas not detecting that GitHub CLI is authenticated

### Environment

* **OS**: macOS Tahoe 26.3
* **Version**: 0.4.2

### Problem

My `gh` CLI is authenticated, yet Athas won't detect it.

<img width="2848" height="2048" alt="Image" src="https://github.com/user-attachments/assets/b911c850-c4d5-410e-8ef8-87c42a1f7987" />

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## Checklist

* [x] I have searched the existing issues
* [x] I have reproduced this issue with the latest version
