[BUG] Plugin command conflicts with built-in command

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?

A plugin-registered slash command /review conflicts with the built-in /review command, causing both to be selected simultaneously in the autocomplete menu.

What Should Happen?

Only one /review cmd should be selected at a time

Error Messages/Logs

Steps to Reproduce

Steps to Reproduce

Install plugin compounding-engineering@every-marketplace which registers a /review command
Open Claude Code in any project
Type /rev in the prompt

Expected Behavior

Only one /review command should be selectable at a time, OR
Plugin commands should be namespaced to avoid conflicts (e.g., /compounding:review or /plugin:review)

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.0.55 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Other

Additional Information

<img width="1146" height="276" alt="Image" src="https://github.com/user-attachments/assets/034fb0ef-3d77-427a-a5f4-7a9a696fae13" />