[BUG] Remove Worktree - Conversations Are Gone!

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 Description

Lost two Claude Code session conversations when git worktree directories were removed. The session metadata still exists but shows "Folder no longer exists" and conversation history is inaccessible.

Steps to Reproduce

1. Claude Code creates git worktree (auto-generated names like "sharp-elgamal")
2. Work in that session, create commits
3. Remove the worktree directory with git worktree remove
4. Return to Claude Code - session shows "Folder no longer exists" and is gone

Expected Behavior

Conversation history should be preserved independently of working directory. Sessions should be:

• Readable even if directory doesn't exist
• Remappable to a new directory
• Or archived but accessible

Actual Behavior

Session completely inaccessible. Metadata exists in:
~/Library/Application Support/Claude/claude-code-sessions/
But UI cannot access the conversation.

Impact

Lost critical development conversation history including architectural decisions and implementation details.

Additional Context

• macOS (Darwin 25.2.0)
• Session metadata shows lastActivityAt timestamp but conversation is gone
• This violates user expectation that conversation history is durable

What Should Happen?

Worktree is a pain for me as a single developer. I don't need it. I specified this in my CLAUDE.md, but Claude Code (CC) snuck it in. When it was time to commit, we had to merge from worktree to repo (unnecessary risks). CC then advised me I could remove the worktree now. Which I did.

IT SHOULD NOT HAVE DELETED THE CONVERSATION HISTORY FOR ALL SESSIONS. THAT IS A DISASTER!

Error Messages/Logs

Steps to Reproduce

See main file above

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.7

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_