checkForFlag(output) {
  if (!output) return false;
  const mainFlags = output.match(/FLAG\{[^}]+\}/g) || [];
  const bonusFlags = output.match(/BONUS\{[^}]+\}/g) || [];
  const hasEnemyMainFlag = mainFlags.some((f) => f !== this.ownFlag);
  const hasBonusFlag = bonusFlags.length > 0;
  return hasEnemyMainFlag || hasBonusFlag;
}