[BUG] VS Code sidebar omits sessions created via SDK/headless (entrypoint: sdk-cli)

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?

Summary

The VS Code extension's session history sidebar lists only sessions whose transcript records have entrypoint: "claude-vscode". Sessions created through the Agent SDK / headless CLI (entrypoint: "sdk-cli", promptSource: "sdk") are never listed, even though their .jsonl transcripts sit in the same ~/.claude/projects/<cwd>/ folder and are fully resumable via claude --resume.

Since entrypoint was the only variable that differed between A and B, it is conclusively the discriminator.

Impact

Sessions from automation / CI / SDK harnesses — and platforms that orchestrate Claude Code headlessly — cannot be browsed or resumed from the IDE sidebar, despite being intact on disk and resumable from the CLI.

What Should Happen?

Expected

Either list all entrypoints for the current project (consistent with the docs' statement that history shows sessions "regardless of which entrypoint created them"), or document that SDK/headless sessions are intentionally excluded and provide an opt-in to surface them.

Error Messages/Logs

Steps to Reproduce

Controlled repro

1. Create a new session through 'claude -p'
2. Take any SDK-created session (entrypoint: sdk-cli) in the current workspace's project dir — it does not appear in the sidebar.
3. Clone it to a new UUID twice; rewrite the internal sessionId to match each new filename. In clone A leave entrypoint: sdk-cli; in clone B set entrypoint: claude-vscode. Keep mtime, perms, and all other content identical.
4. Reload the window → only clone B (claude-vscode) appears. Clone A stays hidden.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.196

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_