/// SMS 스캔 등에서 추출한 결제수단 정보 제안
class PaymentCardSuggestion {
  final String issuerName;
  final String? last4;
  final String? source; // 예: SMS, OCR 등

  const PaymentCardSuggestion({
    required this.issuerName,
    this.last4,
    this.source,
  });

  bool get hasLast4 => last4 != null && last4!.length == 4;
}