Mobile app: GitHub repository access check fails on new sessions after re-authorization

Description

After re-authorizing GitHub in claude.ai web settings, the Claude mobile app (iOS) cannot create new remote sessions. Existing sessions created from the web app work fine on mobile, but creating a new session on mobile fails with:

"Failed to send message - GitHub repository access check failed — re-authorize GitHub in settings"

Steps to reproduce

1. GitHub OAuth token expires
2. Re-authorize GitHub connection in claude.ai web settings
3. Open Claude mobile app (iOS)
4. Try to create a new remote session connecting to a GitHub repo
5. Error appears: "GitHub repository access check failed"

What works

• Web app (claude.ai/code) creates new sessions fine after re-auth
• Existing sessions created on web can be continued on mobile
• Only creating NEW sessions on mobile fails

Attempted fixes

• Force quit and reopen app
• Delete and reinstall app
• Confirmed GitHub OAuth app has access to all repos (github.com > Settings > Applications)
• Waited 15+ minutes after re-auth

Environment

• iOS (latest)
• Claude Code CLI running on macOS
• GitHub repos are accessible and working via web