[BUG] VS Code: resuming a web session that lived in a git worktree fails with "No conversation found with session ID"

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?

I started a session in my repo, Claude moved into a git worktree (.claude/worktrees/<branch>) via the worktrees skill, and I later teleported the session to web. The session shows up fine in the "Web" sessions list in the VS Code extension, but resuming it fails:

Error: Claude Code returned an error result: No conversation found with session ID: 0a1ad0b3-9cb1-4bc6-a989-42f4749b1c13

Each resume attempt writes a stub jsonl in the main repo's project dir with messageCount: 0:

{"type":"teleported-from","remoteSessionId":"session_01XNuYqBR3258LsAwGtTng7g","branch":"...","messageCount":0}
{"type":"teleport-skipped-branch","branch":"...","failed":false}

then errors out because the stub has no conversation in it.

Sessions are stored per working directory. When the session entered the worktree, its transcript continued under the worktree's project slug (...-repo--claude-worktrees-<branch>/<session-id>.jsonl). The main repo dir only has a small fragment with the same session ID. The extension resumes from the main repo dir, doesn't find the conversation there, and doesn't check the worktree slug. Teleport-back also downloads 0 messages instead of restoring from web.

What Should Happen?

Resuming from the Web sessions list should either pull the conversation from the cloud or find the local transcript under the worktree's project dir.

Workaround:

cd into the worktree and claude --resume <session-id> works fine, the full transcript is there.

Heads up: the nested triple-backtick blocks might trip GitHub's renderer — if the preview looks broken, the outer fence isn't needed since you're pasting into the description field directly.

If the template asks for environment info: VS Code extension, macOS (Darwin 25.4.0). You can get the exact versions from claude --version and the Extensions panel.

Error Messages/Logs

2026-08-07 08:54:13.166 [info] From claude: No conversation found with session ID: 0a1ad0b3-9cb1-4bc6-a989-42f4749b1c13
2026-08-07T05:54:13.166Z [ERROR] No conversation found with session ID: 0a1ad0b3-9cb1-4bc6-a989-42f4749b1c13
2026-08-07 08:54:13.717 [info] Closing Claude on channel: r65z695g7h
2026-08-07 08:54:13.717 [error] Error spawning Claude (on channel r65z695g7h): Error: Claude Code returned an error result: No conversation found with session ID: 0a1ad0b3-9cb1-4bc6-a989-42f4749b1c13

And the stub file it leaves behind (~/.claude/projects/<main-repo-slug>/0a1ad0b3-9cb1-4bc6-a989-42f4749b1c13.jsonl):

{"type":"teleported-from","remoteSessionId":"session_01XNuYqBR3258LsAwGtTng7g","branch":"fix-codegen-nested-optionals","messageCount":0}
{"type":"teleport-skipped-branch","branch":"fix-codegen-nested-optionals","failed":false}

Steps to Reproduce

1. Start a Claude Code session in a repo from the VS Code extension
2. Ask Claude to work in a git worktree (it uses the worktrees skill, creates .claude/worktrees/<branch> and continues there — transcript moves to the worktree's project slug under ~/.claude/projects)
3. Teleport the session to web (claude.ai/code) and continue it there
4. Back in VS Code, open the sessions list, find the session under "Web" and try to resume it
5. Resume fails with "No conversation found with session ID: <new-id>" and leaves a stub jsonl with messageCount: 0 in the main repo's project dir

Claude Model

Not sure / Multiple models

Is this a regression?

I don't know

Last Working Version

n/a

Claude Code Version

2.1.224

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_