[BUG] CLI crashes when typing "/" during skill-creator execution

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?

Claude Code CLI crashes when typing "/" to open the command menu while the "skill-creator" skill is actively running. The crash occurs because a newly created skill (in progress) has an undefined or malformed description field, and the command menu tries to call .split() on it.

The crash is reproducible - typing "/" at any point while skill-creator is working, or even after resuming or restarting Claude Code in the same project, triggers the same error.

What Should Happen?

Claude Code should handle missing or malformed tool/skill descriptions gracefully, either by using a fallback empty string or displaying a descriptive error message instead of crashing.

Error Messages/Logs

TypeError: $.description.split is not a function. (In '$.description.split(" ")', '$.description.split' is undefined)
        at <anonymous> (/$bunfs/root/claude:2995:27399)
        at map (1:11)
        at zKA (/$bunfs/root/claude:2995:27285)
        at <anonymous> (/$bunfs/root/claude:2998:14368)
        at <anonymous> (/$bunfs/root/claude:2998:15079)
        at <anonymous> (/$bunfs/root/claude:2998:15119)
        at rA (/$bunfs/root/claude:693:62382)
        at rz (/$bunfs/root/claude:693:75292)
        at P6 (/$bunfs/root/claude:693:75176)
        at rz (/$bunfs/root/claude:693:76075)

Steps to Reproduce

1. Run a skill that creates a new skill (e.g., use skill-creator to create "pr-creator")
2. While the skill is being created and Claude is processing, type "/" to open the command/skill menu
3. Claude Code crashes immediately with TypeError

The crash also persists after starting a fresh claude session in the same project.

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.1

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Warp

Additional Information

<img width="1774" height="1000" alt="Image" src="https://github.com/user-attachments/assets/631c6fa4-57ef-47d4-9d5f-6f2e1f163b5b" />

<img width="1774" height="951" alt="Image" src="https://github.com/user-attachments/assets/3e50be89-070f-41f7-af5b-b8dad0fb8255" />