[BUG] v2.1.129 - VS Code extension fails to activate on Windows - hardcoded Linux path

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?

After auto-update to v2.1.129, the Claude Code extension completely fails to activate on Windows. The icon disappears from the Activity Bar and all commands return "not found" error.

What Should Happen?

The extension should activate normally and show the Claude Code icon in the Activity Bar.

Error Messages/Logs

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\waqar\.vscode\extensions\anthropic.claude-code-2.1.129-win32-x64\extension.js:102:5407)

Steps to Reproduce

1. Have Claude Code extension on Windows
2. Extension auto-updates to v2.1.129
3. Reload VS Code window
4. Extension fails to activate - icon missing, all commands not found

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

2.1.123

Claude Code Version

2.1.129 (Claude Code)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

The extension.js contains a hardcoded Linux build path which breaks on Windows. VS Code version: 1.118.1 x64