[BUG] Skill slash auto complete not working when defined as a plugin

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?

When I create a skill in my project, under .claude/skills/myskill , the skill appears as auto complete when I type slash in Claude.

However when I define my skill in a plugin in my private marketplace, the skill can be triggered based on my intent , but it doesn't show up when I type slash.

In summary it seems that slash only works for project skills but not for plugin skills. Please note that plugin mcps are shown with slash, so I would expect a consistent behaviour for skills.

What Should Happen?

When defining plugin skills, when pressing slash in Claude code, the skills should be shown

Error Messages/Logs

Steps to Reproduce

Create a plugin skill and define in the marketplace

Install the plugin via market place

Press slash in Claude code, the skill will not show up

Claude Model

None

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.1.17

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_