notify-before-bash — хук для Claude Code: что делает и как установить

{
  "description": "Show notification before any Bash command execution for security awareness. This hook displays a simple echo message '🔔 About to run bash command...' before Claude executes any bash command, giving you visibility into when system commands are about to run. Useful for monitoring and auditing command execution.",
  "hooks": {
    "PreToolUse": [
      {
        "matcher": "Bash",
        "hooks": [
          {
            "type": "command",
            "command": "echo '🔔 About to run bash command...'"
          }
        ]
      }
    ]
  }
}