[BUG] Grove privacy dialog hangs CLI on Linux (kitty/xterm-256color)

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 grove_enabled is set to true server-side for my account, Claude Code CLI hangs on startup. The Grove privacy/policy dialog does not render in the terminal — it freezes with no visible output, no TUI, nothing. Ctrl+Z is the only way to exit. Both interactive mode (claude) and print mode (claude -p "hi") hang. claude --version works fine.

What Should Happen?

The Grove privacy dialog should either render correctly in Linux terminals (kitty with TERM=xterm-256color) or gracefully skip/fall back when the TUI cannot render, instead of silently hanging.

Error Messages/Logs

Steps to Reproduce

1. Have a Claude Max account with grove_enabled: true set server-side (this is controlled by Anthropic, not the user)
2. Use Linux (Arch Linux, kernel 6.18.9) with kitty terminal
3. Run claude in the terminal
4. CLI hangs — blank screen, no output, no TUI rendered
5. Only Ctrl+Z can exit

Workaround: manually patch ~/.claude.json to set grove_enabled: false in groveConfigCache. This is temporary — the cache refreshes from the server and the issue recurs.

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.92

Platform

Anthropic API

Operating System

Other Linux

Terminal/Shell

Other

Additional Information

_No response_