[Bug] /insights command displays incorrect file path on Windows (missing backslash between username and .claude)

<img width="1003" height="261" alt="Image" src="https://github.com/user-attachments/assets/d9f3433e-3ffb-4e71-8ce7-887bdf8168ac" />

Bug Description
When using /insights, output was written to appropriate path "C:/Users/mohan/.claude/usage-data/report.html", but in the details shown as reponse, the path mentioned was "C:/Users/mohan.claude/usage-data/report.html" which was non existent. After the currently logged in user name, "\" was missed. The environment is Windows 11, Claude code terminal. Fix has to be applied on the message being displayed and nothing to be changed for the actual file writing method as the file is actually written.

Environment Info

• Platform: win32
• Terminal: windows-terminal
• Version: 2.1.89
• Feedback ID: 212e31b5-e657-43f4-8226-0b1b67f06e47

Errors

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