[Windows] Chrome extension reconnect fails - page closes immediately

When attempting to reconnect the Chrome extension from Claude Code, the browser opens clau.de/chrome/reconnect but
the tab closes/disconnects immediately without completing the authorization flow.

## Environment

• OS: Windows 10 Pro 25H2 (Build 26200)
• Chrome: 144.0.7559.110 (Official Build) (64-bit)
• Claude Code: 2.1.30
• Extension ID: fcoeoabgfenejglbffodgkkbkcdhcgfn
• Node.js: v22.18.0

## Steps to Reproduce

1. Run claude in terminal
2. Execute /chrome command
3. Status shows "Enabled" and "Installed" (green)
4. Select "Reconnect extension"
5. Chrome opens clau.de/chrome/reconnect
6. The page immediately closes/disconnects before authorization completes

## What I Expected

The authorization flow should complete and connect the extension to Claude Code.

## What Actually Happened

The reconnect page opens briefly then closes automatically. The extension never connects.

## Troubleshooting Already Attempted

1. ✅ Reinstalled Chrome extension
2. ✅ Restarted Chrome completely (killed all processes)
3. ✅ Restarted Claude Code
4. ✅ Verified logged into claude.ai with same account
5. ✅ Manually created Native Messaging Host JSON file at:

C:\Users\<user>\AppData\Local\Google\Chrome\NativeMessagingHosts\com.anthropic.claude_code.json

1. ✅ Added Windows Registry entry at:

HKCU:\Software\Google\Chrome\NativeMessagingHosts\com.anthropic.claude_code

1. ✅ Verified chrome-native-host.bat exists at ~/.claude/chrome/

## Relevant Debug Logs

Claude Code detects the extension correctly:
[Claude in Chrome] Found chrome profiles: Default
[Claude in Chrome] Detected browser: Google Chrome
[Claude in Chrome] Extension fcoeoabgfenejglbffodgkkbkcdhcgfn found in chrome Default

But when running the native host manually, got this error (suggesting connection issues):
[Claude Chrome Native Host] Creating socket listener: \.\pipe\claude-mcp-browser-bridge-
[Claude Chrome Native Host] Socket server error: Error: listen EADDRINUSE: address already in use

## Chrome Extension Console Errors

From chrome://extensions errors page:

• Uncaught (in promise) Error: Could not establish connection. Receiving end does not exist.
• `Error: A listener indicated an asynchronous response by returning true, but the message channel closed before a

response was received`

## Additional Context

The Native Messaging Host file was missing initially (empty NativeMessagingHosts folder). After manually creating
it, the issue persists.