[BUG] VS Code extension loses session history on restart when workspace is on a network drive

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'm using Claude Code VS Code extension (v2.1.76) with my workspace on a mapped network drive (Y:\ pointing to a Synology NAS via SMB).

What Should Happen?

Every time I close and reopen VS Code, the Claude Code sidebar shows no previous sessions. Only the current session appears under the "Local" tab. When I close VS Code and reopen it, the session list is empty again.

The conversation data IS being persisted — the .jsonl files are correctly saved in C:\Users\<user>\.claude\projects\<project-hash>\ (I have 100+ session files there). The issue is that the extension doesn't re-discover/re-index these sessions on startup.

Environment:

Windows 11 Pro
Claude Code extension: latest (CLI v2.1.76)
Workspace path: Y:\eclipse\l2h5AlexRepo\l2jCriptoHighFive (mapped network drive to Synology NAS)
The drive letter is persistent (net use /persistent:yes), always Y:\
Steps to reproduce:

Open VS Code with a workspace on a mapped network drive
Start a Claude Code session — it appears in the Local tab
Close VS Code completely
Reopen VS Code with the same workspace
The Claude Code sidebar shows no previous sessions
Expected behavior:
Previous sessions should appear in the Local tab after reopening VS Code, just like they do when using a local drive.

Workaround:
Running claude --resume from the integrated terminal does find and list all past sessions, confirming the data is there — it's just not loaded by the extension UI.

Error Messages/Logs

Steps to Reproduce

Steps to reproduce:

1. Open VS Code with a workspace on a mapped network drive
2. Start a Claude Code session — it appears in the Local tab
3. Close VS Code completely
4. Reopen VS Code with the same workspace
5. The Claude Code sidebar shows no previous sessions

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.76 (Claude Code)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_