[BUG] Web/desktop sessions hang on "Cloning repo" — mobile works fine

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: Web/desktop sessions hang on "Cloning repo" — mobile works fine

Environment:

• Windows 11 Pro 10.0.26200
• Chrome + Claude Code Windows app — both hang
• Claude Android app — works on same WiFi network
• No proxy, no VPN

Symptoms:

• Session hangs on "Cloning repo" indefinitely
• Eventually shows "retry connection" button
• Browser console shows 404s on git_proxy/compare for old session IDs
• New session initializes (initSession log visible) but never connects

Diagnostics performed:

• Same repo boots in ~24s on mobile (hook timing confirmed)
• No Windows proxy (netsh winhttp show proxy = direct)
• Cleared browser cache/site data — no change
• Repo is 95MB, not unusually large

What Should Happen?

successful startup

Error Messages/Logs

Steps to Reproduce

startup

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

web!!

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_