[Bug] Incorrect keybind documentation in agents view (ctrl+c vs ctrl+x)

**Bug Description**
agents view do you mean ctrl+x? says ctrl +c twice ...that closes the agents view not stopps the session thats a bug. ▐▛███▛█ Claude Code v2.1.268
▝▜██████▀ Sonnet 5 · ~/projects/powell-clark
▝▝ ▝▝ 1 awaiting input · 3 working · 0 completed

Your conversation moved to the background — enter opens it · esc returns to it · ctrl+c twice quits

**Environment Info**
- Platform: linux
- Terminal: xterm-256color
- Version: 2.1.269
- Feedback ID: 07e6c77d-c025-4e59-b220-4d4ef7cea10b

**Errors**
```json
[]
```

Start in the agents view and locate the displayed keybind text shown in the report. Verify the shortcut behavior, then correct the text so it matches the action it describes; done means the agents view no longer tells users that Ctrl+C stops the session when it closes the view, and the existing quit shortcut remains accurately documented.

索引モデルが issue の本文から書いたものです。