[BUG]

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?

Title:
Latest Claude VS Code extension fails to activate on Windows (file:///home/runner path error)

Body:

Environment:

• OS: Windows 10/11
• VS Code: 1.109.5 (also tested on 1.88.x)
• Claude Extension: Latest version (please specify version number)

Issue:
The extension fails to activate and stays in "Activating..." state.

Error in Developer Console:

Activating extension 'Anthropic.claude-code' failed:
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'

Also shows:
[UriError]: Scheme contains illegal characters.

It appears the extension is referencing a Linux build path (/home/runner/...), which causes activation failure on Windows.

Downgrading to the previous version fixes the issue.

Please investigate Windows packaging of the latest release.

What Should Happen?

It should launch claude but won't launch because of error

Error Messages/Logs

Steps to Reproduce

Title:
Latest Claude VS Code extension fails to activate on Windows (file:///home/runner path error)

Body:

Environment:

• OS: Windows 10/11
• VS Code: 1.109.5 (also tested on 1.88.x)
• Claude Extension: Latest version (please specify version number)

Issue:
The extension fails to activate and stays in "Activating..." state.

Error in Developer Console:

Activating extension 'Anthropic.claude-code' failed:
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'

Also shows:
[UriError]: Scheme contains illegal characters.

It appears the extension is referencing a Linux build path (/home/runner/...), which causes activation failure on Windows.

Downgrading to the previous version fixes the issue.

Please investigate Windows packaging of the latest release.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

latest

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_