What would you like to be added?

ClaudeCode v2.1.141 release added a terminalSequence field to hook JSON output so hooks can emit terminal-side effects such as desktop notifications, window-title updates, and bells without a controlling terminal.

Why is this needed?

anthropics/claude-code#36850

Additional context

Example:

1. ~/.claude/hooks/notify.sh

#!/bin/bash
afplay -v 0.5 /System/Library/Sounds/Tink.aiff 2>/dev/null
jq -nc '{terminalSequence: ""}'

2. ~/.claude/settings.json

{
  "hooks": {
    "PermissionRequest": [
      {
        "matcher": "",
        "hooks": [{ "type": "command", "command": "~/.claude/hooks/notify.sh" }]
      }
    ],
    "Stop": [
      {
        "matcher": "",
        "hooks": [{ "type": "command", "command": "~/.claude/hooks/notify.sh" }]
      }
    ]
  }
}