[BUG] Subagents stall waiting for MCP servers to be approved when merged into worktrees

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?

[BUG] Subagents stall waiting for MCP servers to be approved when deployed in worktrees using ultracode.

What Should Happen?

They should inherit the mcp permissions of the agent that spawned them.

Error Messages/Logs

Steps to Reproduce

1. Ask claudecode to use ultracode on a task in a work tree.
2. Load up tmux and look at the subagents.
3. See that the agents are acting as if they're being initiated for the first time and asking what mcp servers they're allowed to use.
4. Wonder why this wasn't caught using automatic testing.

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.185

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_