[BUG] `claude --worktree` fails inside a bare repository

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?

As git worktree add works inside any directory under a bare repository, claude --worktree should do so, but it doesn't.

What Should Happen?

Executing claude --worktree creates a worktree _somewhere_.

Error Messages/Logs

Error: Can only use --worktree in a git repository, but WORKING_DIRECTOR is not a git repository

Steps to Reproduce

1. Unzip bare-wt-setup.zip
2. cd to either ./bare or./bare/info
3. Execute claude --worktree

Claude Model

None

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.1.50

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

Regarding the location for worktrees created from within the bare repository, I think it's a little awkward to create worktrees in $BARE_REPO_DIR/.claude/worktrees/ or $BARE_REPO_DIR/**/.claude/worktrees/. I will create a separate FR issue for it.