Sandbox UI: tab cycling not working on /sandbox screen

Description

On the /sandbox screen, the Dependencies tab is shown with all dependencies installed (bubblewrap, socat, seccomp filter). However, arrow keys (←/→) and Tab do not cycle between tabs. Only Escape works.

The UI shows (←/→ or tab to cycle) hint next to "Dependencies", but none of these keys respond.

Environment

• Claude Code version: v2.1.71
• OS: macOS (Darwin 24.6.0)
• Platform: darwin (Apple Silicon)

Steps to reproduce

1. Open Claude Code in a git repository directory
2. Run /sandbox
3. Dependencies tab appears showing all dependencies as "installed"
4. Press ←, →, or Tab to try cycling tabs — nothing happens
5. Only Escape key works

Expected behavior

Arrow keys and Tab should cycle between sandbox tabs to allow enabling/configuring sandbox mode.