useEffect(() => {
  // Don't execute for pending or empty responses.
  if (isPending || !text) {
    return;
  }

  // The command to run.
  const commandToRun = 'gemini --output';

  // IMPORTANT: Pass the AI's message via an environment variable
  // to prevent shell injection vulnerabilities.
  const options = {
    env: {
      ...process.env,
      GEMINI_MESSAGE: text,
    },
  };

  exec(commandToRun, options, (error, stdout, stderr) => {
    if (error) {
      console.error(`exec error: ${error.message}`);
      return;
    }
  });
}, [text, isPending]);