[BUG] False positive "Installation config mismatch" warning when both values are identical

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

The System Diagnostics shows a mismatch warning even when both values are the same:
⚠ Installation config mismatch: running npm-global but config says npm-global
Both values are npm-global, so this should not trigger a warning.

Environment:
Claude Code version: 2.0.76
OS: macOS
Installation method: npm global (npm install -g @anthropic-ai/claude-code)

What Should Happen?

There should not be an error.

Error Messages/Logs

⚠ Installation config mismatch: running npm-global but config says npm-global

Steps to Reproduce

Run /status

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.0.76

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_