VS Code extension freezes — backend process dies before processing prompt

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?

Extension accepts messages but never responds. After typing any prompt, it shows "Combobulating... etc " just this keep changing no answer or response come.
Logs show the backend process immediately fires SessionEnd and shuts down the LSP server before processing the message. No error is displayed — the UI just hangs indefinitely. Additionally, old/previous conversations do not load in the extension. CLI works fine with the same auth, so this is extension-specific.

What Should Happen?

The extension should process user messages and return responses, also able to login again from there,just like the CLI does. Previous conversations should also load and be accessible in the extension sidebar.

Error Messages/Logs

2026-02-04 04:48:31.479 [info] From claude: 2026-02-03T23:48:31.491Z [DEBUG] Getting matching hook commands for SessionEnd with query: other
2026-02-03T23:48:31.491Z [DEBUG] Found 0 hook matchers in settings

2026-02-04 04:48:31.479 [info] From claude: 2026-02-03T23:48:31.491Z [DEBUG] Matched 0 unique hooks for query "other" (0 before deduplication)

2026-02-04 04:48:31.528 [info] From claude: 2026-02-03T23:48:31.541Z [DEBUG] LSP server manager shut down successfully

2026-02-04 04:48:32.724 [info] Received message from webview: {"type":"request","requestId":"fxdbk3ekyg","request":{"type":"rename_tab","title":"helloe","hasPendingPermissions":false,"hasUnseenCompletion":false}}

2026-02-04 04:48:32.741 [info] Received message from webview: {"type":"io_message","channelId":"ccfej7yj7l","message":{"type":"user","uuid":"da7a4aab-094d-4e01-8792-5ad8ab5ee31a","session_id":"","parent_tool_use_id":null,"message":{"role":"user","content":[{"type":"text","text":"helloe"}]}}}

Note: SessionEnd fires and LSP shuts down BEFORE the user message is processed. No error is returned. UI hangs on "Combobulating..." indefinitely.

Steps to Reproduce

Try installing diferent verison of node or previous ,

1. Install Claude Code VS Code extension v2.1.30
2. Open VS Code (v1.108, Windows)
3. Click Claude Code in the sidebar
4. Sign in with Anthropic account (auth succeeds)
5. Type any message (e.g., "hello") and press Enter
6. Extension shows "Combobulating..." and never responds
7. Check Output panel (Ctrl+Shift+U → "Claude Code") — logs show SessionEnd firing immediately

No specific project, files, or code needed — happens on any prompt in any workspace.

Note: Running "claude" in the terminal (CLI) with the same auth works perfectly.

Claude Model

Not sure / Multiple models

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.1.30

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_