[BUG] VS Code Extension v2.1.129 fails to activate on Windows: hardcoded Linux CI path in extension.js

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?

The Claude Code VS Code extension v2.1.129 (win32-x64) fails to activate on Windows. All claude-vscode.* commands report "command not found". The extension was auto-updated this morning and has been broken since.

Root Cause:
A hardcoded Linux CI build path (file:///home/runner/work/...) is baked into extension.js (line 102). This path is invalid on Windows and causes a TypeError during activation.

Environment:

• OS: Windows 11
• VS Code: latest
• Extension: anthropic.claude-code-2.1.129-win32-x64

What Should Happen?

Expected: Extension activates and panel opens
Actual: Extension fails to activate; all claude-vscode.* commands report "not found"

Error Messages/Logs

2026-05-06 06:36:50.939 [info] ExtensionService#_doActivateExtension Anthropic.claude-code, startup: false, activationEvent: 'onWebviewPanel:claudeVSCodePanel'
2026-05-06 06:36:51.208 [error] Activating extension Anthropic.claude-code failed due to an error:
2026-05-06 06:36:51.208 [error] TypeError: The argument 'filename' must be a file URL object, file URL string, or absolute path string. Received 'file:///home/runner/work/claude-cli-internal/claude-cli-internal/build-agent-sdk/sdk.mjs'
    at Module.createRequire (node:internal/modules/cjs/loader:1922:13)
    at Object.<anonymous> (c:\Users\...\anthropic.claude-code-2.1.129-win32-x64\extension.js:102:5407)

Steps to Reproduce

Steps to Reproduce:

1. Auto-update or install Claude Code VS Code extension v2.1.129 on Windows
2. Open any workspace in VS Code
3. Click the Claude Code icon in the activity bar

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

2.1.128

Claude Code Version

2.1.129 Claude Code VS Code extension

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_