[BUG] /remote-control session URL immediately shows "session not found" error

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?

When running /remote-control in Claude Code CLI, a session URL is
generated (https://claude.ai/code/session_XXXX). Opening that URL
immediately shows the error "This session could not be found. It may
have been deleted or you may not have access."

This happens both on desktop browser and on mobile (Claude app and
browser). The terminal shows the session as active, but the URL is
unreachable right after being generated.

What Should Happen?

The session URL generated by /remote-control should open successfully
in a browser or the Claude mobile app, allowing the user to continue
the session remotely.

Error Messages/Logs

Browser error: "This session could not be found. It may have been
  deleted or you may not have access."

Steps to Reproduce

1. Open Claude Code in the terminal (CLI).
2. Run /remote-control.
3. Copy the generated session URL

(format: https://claude.ai/code/session_XXXXX).

1. Open the URL in a browser while logged in to claude.ai.
2. The page shows "session not found" error immediately.

Note: The issue occurs even on desktop browser, not only on mobile.

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.143 (Claude Code)

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

Other

Additional Information

• The session URL fails immediately after being generated, before

any timeout could occur.

• The error appears both on mobile (Claude app) and desktop browser.
• The user is logged in to claude.ai with the correct account.
• Screenshots attached showing the active session in terminal and

the "session not found" error in the browser simultaneously.