[BUG] remote-control: infinite spinner on iPhone when opening session URL

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?

## Description

When using claude remote-control, opening the generated session URL on an iPhone results in an infinite spinner on the claude.ai/code web interface. The session never connects.

## Steps to reproduce

1. Run claude remote-control on Windows PC
2. Open the generated URL on iPhone (opens in browser, not the Claude mobile app which is weird)
3. Spinner appears and never resolves — the session never becomes interactive

## Environment

• Claude Code CLI version: 2.1.92
• OS (host): Windows 11 Home 10.0.26200
• Mobile device: iPhone 12, iOS 16.4
• Mobile browser: Safari & Chrome
• Subscription: Claude Max

## Expected behavior

The mobile browser should connect to the local Claude Code session and allow sending prompts.

## Actual behavior

Infinite spinner. No error message, no timeout — just never connects.

## Notes

This is currently the only official way to interact with a local Claude Code session from a mobile device. With voice dictation working well on iOS but poorly on Windows, this feature is critical for users who want to use voice input with Claude Code.

What Should Happen?

The mobile browser should connect to the local Claude Code session and allow sending prompts

Error Messages/Logs

Steps to Reproduce

1. Run claude remote-control on Windows PC
2. Open the generated URL on iPhone (opens in browser, not the Claude mobile app which is weird)
3. Spinner appears and never resolves — the session never becomes interactive

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.92 (Claude Code)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_