[BUG] Links to source files don't do anything

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?

I asked Claude to do a code review, and got this:

<img width="291" height="335" alt="Image" src="https://github.com/user-attachments/assets/32442b65-d874-46bb-9997-a955b1bf6eb2" />

The links don't go anywhere (these source files have no extension, if that matters).

What Should Happen?

When clicking on the link (which as a line number with it too), I expect that

• if the window exists in a window group not the same as Claude, that it will bring it into focus and jump to the line.
• else if it exists in the same window group as Claude then it'll bring it into focus and jump to the line.
• else if there is a window group that doesn't contain Claude, open it in that group and jump to line.
• else open it in the Claude window group and jump to line.

Error Messages/Logs

No messages.  Just doesn't do anything.

Steps to Reproduce

1. Tell Claude to do a code review on code that is bad.
2. Claude should say something is wrong at <file>: <line#> with an underlined link.
3. Click on link an watch the amazing Claude do nothing..

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

claude-opus-4-5-20251101

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_