[BUG] Plugin Failure With Bundle Local MCP Server

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?

The New Version Not Supporting the Plugin Local MCP Server showing using MCPB files.

<img width="503" height="423" alt="Image" src="https://github.com/user-attachments/assets/73e050a2-a5ca-47ff-94cc-c371a4fc449b" />

What Should Happen?

It should allow the Local MCP servers

Error Messages/Logs

Steps to Reproduce

Create A Server inside the Plugin Bundle

Claude Model

_No response_

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Claude 1.14271.0 (c8f4d8) 2026-06-18T05:47:57.000Z

Platform

Other

Operating System

macOS

Terminal/Shell

Other

Additional Information

_No response_