[BUG] Cannot install Claude Github App (no URL shown)

Environment

• Platform (select one):
• [ ] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [x] Other: Local Devcontainer, within a VM
• Claude CLI version: 1.0.43
• Operating System: Ubuntu
• Terminal: Cursor inside a devcontainer

Bug Description

When running the /install-github-app the CLI tries to open a browser window, and does not show the URL to manually click (like the main claude login auth flow does).

This means the github app cannot be installed when being executed remotely (via SSH), where no local browser window is available. Nothing happens, and the user can't proceed from this screen:

╭─────────────────────────────────────────────────────────────────────────────────╮
│ Install the Claude GitHub App                                                   │
│                                                                                 │
│ Opening browser to install the Claude GitHub App…                               │
│                                                                                 │
│ Please install the app for repository: kurisu-dotto-komu/xxx        │
│                                                                                 │
│ Important: Make sure to grant access to this specific repository                │
│                                                                                 │
│ Press Enter once you've installed the app…                                      │
╰─────────────────────────────────────────────────────────────────────────────────╯

Steps to Reproduce

1. Run /install-github-app
2. Proceed with setup, including gh checks
3. Be informed that a browser window has opened, but no browser window opens

Expected Behavior

As no browser window can be opened, a URL is also shown that can be manually copied into a browser

Actual Behavior

No URL is shown, so if the CLI is being executed remotely, the browser window doesn't open

Additional Context

The standard claude login auth flow shows a link that can be manually opened to get around this