feat: improve sms scan review and detail layouts

lib/services/sms_scanner.dart

@@ -40,9 +40,22 @@ class SmsScanner {
         return [];
       }
 
+      final filteredSms = smsList
+          .whereType<Map<String, dynamic>>()
+          .where(_isEligibleSubscriptionSms)
+          .toList();
+
+      Log.d(
+          'SmsScanner: 유효 결제 SMS ${filteredSms.length}건 / 전체 ${smsList.length}건');
+
+      if (filteredSms.isEmpty) {
+        Log.w('SmsScanner: 결제 패턴 SMS 미검출');
+        return [];
+      }
+
       // SMS 데이터를 분석하여 반복 결제되는 구독 식별
       final List<SmsScanResult> subscriptions = [];
-      final serviceGroups = _groupMessagesByIdentifier(smsList);
+      final serviceGroups = _groupMessagesByIdentifier(filteredSms);
 
       Log.d('SmsScanner: 그룹화된 키 수: ${serviceGroups.length}');
 
@@ -355,16 +368,80 @@ class SmsScanner {
   }
 }
 
+const List<String> _paymentLikeKeywords = [
+  '승인',
+  '결제',
+  '청구',
+  'charged',
+  'charge',
+  'payment',
+  'billed',
+  'purchase',
+];
+
+const List<String> _blockedKeywords = [
+  'otp',
+  '인증',
+  '보안',
+  'verification',
+  'code',
+  '코드',
+  'password',
+  'pw',
+  '일회성',
+  '1회용',
+  '보안문자',
+];
+
+bool _containsPaymentKeyword(String message) {
+  if (message.isEmpty) return false;
+  final normalized = message.toLowerCase();
+  return _paymentLikeKeywords.any(
+    (keyword) => normalized.contains(keyword.toLowerCase()),
+  );
+}
+
+bool _containsBlockedKeyword(String message) {
+  if (message.isEmpty) return false;
+  final normalized = message.toLowerCase();
+  return _blockedKeywords.any(
+    (keyword) => normalized.contains(keyword.toLowerCase()),
+  );
+}
+
+bool _isEligibleSubscriptionSms(Map<String, dynamic> sms) {
+  final amount = (sms['monthlyCost'] as num?)?.toDouble();
+  if (amount == null || amount <= 0) {
+    return false;
+  }
+
+  final message = sms['message'] as String? ?? '';
+  final isPaymentLike =
+      (sms['isPaymentLike'] as bool?) ?? _containsPaymentKeyword(message);
+  final isBlocked =
+      (sms['isBlocked'] as bool?) ?? _containsBlockedKeyword(message);
+
+  if (!isPaymentLike || isBlocked) {
+    return false;
+  }
+
+  return true;
+}
+
 // ===== Isolate 오프로딩용 Top-level 파서 =====
 
 // 대량 SMS 파싱: plugin 객체를 직렬화한 맵 리스트를 받아 구독 후보 맵 리스트로 변환
 List<Map<String, dynamic>> _parseRawSmsBatch(
     List<Map<String, dynamic>> messages) {
   final amountPatterns = <RegExp>[
-    RegExp(r'(\d{1,3}(?:,\d{3})*)(?:원|₩)'), // 원화
-    RegExp(r'\$(\d+(?:\.\d{2})?)'), // 달러
-    RegExp(r'(\d+(?:\.\d{2})?)\s*USD'), // USD
-    RegExp(r'결제.*?(\d{1,3}(?:,\d{3})*)'), // 결제 금액
+    RegExp(r'(\d{1,3}(?:,\d{3})*(?:\.\d{1,2})?)\s*(?:원|₩)'),
+    RegExp(r'(?:원|₩)\s*(\d{1,3}(?:,\d{3})*(?:\.\d{1,2})?)'),
+    RegExp(r'(?:(?:US)?\$)\s*(\d+(?:\.\d{1,2})?)', caseSensitive: false),
+    RegExp(r'(\d+(?:,\d{3})*(?:\.\d{1,2})?)\s*(?:USD|KRW)',
+        caseSensitive: false),
+    RegExp(r'(?:USD|KRW)\s*(\d+(?:,\d{3})*(?:\.\d{1,2})?)',
+        caseSensitive: false),
+    RegExp(r'(?:결제|승인)[^0-9]{0,12}(\d{1,3}(?:,\d{3})*(?:\.\d{1,2})?)'),
   ];
 
   final results = <Map<String, dynamic>>[];
@@ -377,6 +454,8 @@ List<Map<String, dynamic>> _parseRawSmsBatch(
     final date = DateTime.fromMillisecondsSinceEpoch(dateMillis);
     final serviceName = _isoExtractServiceName(body, sender);
     final amount = _isoExtractAmount(body, amountPatterns);
+    final isPaymentLike = _containsPaymentKeyword(body);
+    final isBlocked = _containsBlockedKeyword(body);
     final billingCycle = _isoExtractBillingCycle(body);
     final nextBillingDate =
         _isoCalculateNextBillingFromDate(date, billingCycle);
@@ -391,6 +470,8 @@ List<Map<String, dynamic>> _parseRawSmsBatch(
       'normalizedBody': normalizedBody,
       'nextBillingDate': nextBillingDate.toIso8601String(),
       'previousPaymentDate': date.toIso8601String(),
+      'isPaymentLike': isPaymentLike,
+      'isBlocked': isBlocked,
     });
   }
 
@@ -557,6 +638,10 @@ _RepeatDetectionResult? _detectRepeatingSubscriptions(
 
   if (matchedIndices.length < 2) return null;
 
+  final hasValidInterval = matchedPairs.any((pair) =>
+      pair.type == _MatchType.monthly || pair.type == _MatchType.yearly);
+  if (!hasValidInterval) return null;
+
   final baseIndex = matchedIndices
       .reduce((value, element) => value < element ? value : element);
   final baseMessage = Map<String, dynamic>.from(sorted[baseIndex]);