Initial commit: SubManager Flutter App

주요 구현 완료 기능:
- 구독 관리 (추가/편집/삭제/카테고리 분류)
- 이벤트 할인 시스템 (기본값 자동 설정)
- SMS 자동 스캔 및 구독 정보 추출
- 알림 시스템 (타임존 처리 안정화)
- 환율 변환 지원 (KRW/USD)
- 반응형 UI 및 애니메이션
- 다국어 지원 (한국어/영어)

버그 수정:
- NotificationService tz.local 초기화 오류 해결
- MainScreenSummaryCard 레이아웃 오버플로우 수정
- 구독 추가 시 LateInitializationError 완전 해결

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

lib/models/category_model.dart

@@ -0,0 +1,25 @@
+import 'package:hive/hive.dart';
+
+part 'category_model.g.dart';
+
+@HiveType(typeId: 1)
+class CategoryModel extends HiveObject {
+  @HiveField(0)
+  String id;
+
+  @HiveField(1)
+  String name;
+
+  @HiveField(2)
+  String color;
+
+  @HiveField(3)
+  String icon;
+
+  CategoryModel({
+    required this.id,
+    required this.name,
+    required this.color,
+    required this.icon,
+  });
+}

lib/models/category_model.g.dart

@@ -0,0 +1,50 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'category_model.dart';
+
+// **************************************************************************
+// TypeAdapterGenerator
+// **************************************************************************
+
+class CategoryModelAdapter extends TypeAdapter<CategoryModel> {
+  @override
+  final int typeId = 1;
+
+  @override
+  CategoryModel read(BinaryReader reader) {
+    final numOfFields = reader.readByte();
+    final fields = <int, dynamic>{
+      for (int i = 0; i < numOfFields; i++) reader.readByte(): reader.read(),
+    };
+    return CategoryModel(
+      id: fields[0] as String,
+      name: fields[1] as String,
+      color: fields[2] as String,
+      icon: fields[3] as String,
+    );
+  }
+
+  @override
+  void write(BinaryWriter writer, CategoryModel obj) {
+    writer
+      ..writeByte(4)
+      ..writeByte(0)
+      ..write(obj.id)
+      ..writeByte(1)
+      ..write(obj.name)
+      ..writeByte(2)
+      ..write(obj.color)
+      ..writeByte(3)
+      ..write(obj.icon);
+  }
+
+  @override
+  int get hashCode => typeId.hashCode;
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is CategoryModelAdapter &&
+          runtimeType == other.runtimeType &&
+          typeId == other.typeId;
+}

lib/models/subscription.dart

@@ -0,0 +1,64 @@
+class Subscription {
+  final String id;
+  final String serviceName;
+  final double monthlyCost;
+  final String billingCycle;
+  final DateTime nextBillingDate;
+  final String? category;
+  final String? notes;
+  final int repeatCount;
+  final DateTime? lastPaymentDate;
+  final String? websiteUrl;
+  final String currency;
+
+  Subscription({
+    required this.id,
+    required this.serviceName,
+    required this.monthlyCost,
+    required this.billingCycle,
+    required this.nextBillingDate,
+    this.category,
+    this.notes,
+    this.repeatCount = 1,
+    this.lastPaymentDate,
+    this.websiteUrl,
+    this.currency = 'KRW',
+  });
+
+  Map<String, dynamic> toMap() {
+    return {
+      'id': id,
+      'serviceName': serviceName,
+      'monthlyCost': monthlyCost,
+      'billingCycle': billingCycle,
+      'nextBillingDate': nextBillingDate.toIso8601String(),
+      'category': category,
+      'notes': notes,
+      'repeatCount': repeatCount,
+      'lastPaymentDate': lastPaymentDate?.toIso8601String(),
+      'websiteUrl': websiteUrl,
+      'currency': currency,
+    };
+  }
+
+  factory Subscription.fromMap(Map<String, dynamic> map) {
+    return Subscription(
+      id: map['id'] as String,
+      serviceName: map['serviceName'] as String,
+      monthlyCost: map['monthlyCost'] as double,
+      billingCycle: map['billingCycle'] as String,
+      nextBillingDate: DateTime.parse(map['nextBillingDate'] as String),
+      category: map['category'] as String?,
+      notes: map['notes'] as String?,
+      repeatCount: (map['repeatCount'] as num?)?.toInt() ?? 1,
+      lastPaymentDate: map['lastPaymentDate'] != null
+          ? DateTime.parse(map['lastPaymentDate'] as String)
+          : null,
+      websiteUrl: map['websiteUrl'] as String?,
+      currency: map['currency'] as String? ?? 'KRW',
+    );
+  }
+
+  // 주기적 결제 여부 확인
+  bool get isRecurring => repeatCount > 1;
+}

lib/models/subscription_model.dart

@@ -0,0 +1,101 @@
+import 'package:hive_flutter/hive_flutter.dart';
+
+part 'subscription_model.g.dart';
+
+@HiveType(typeId: 0)
+class SubscriptionModel extends HiveObject {
+  @HiveField(0)
+  final String id;
+
+  @HiveField(1)
+  String serviceName;
+
+  @HiveField(2)
+  double monthlyCost;
+
+  @HiveField(3)
+  String billingCycle; // '월간', '연간', '주간' 등
+
+  @HiveField(4)
+  DateTime nextBillingDate;
+
+  @HiveField(5)
+  bool isAutoDetected; // SMS로 추가된 경우 true
+
+  @HiveField(6)
+  String? categoryId;
+
+  @HiveField(7)
+  String? websiteUrl; // 홈페이지 URL
+
+  @HiveField(8)
+  int repeatCount; // 반복 결제 횟수
+
+  @HiveField(9)
+  DateTime? lastPaymentDate; // 마지막 결제일
+
+  @HiveField(10)
+  String currency; // 통화 단위: 'KRW' 또는 'USD'
+
+  @HiveField(11)
+  bool isEventActive; // 이벤트 활성화 여부
+
+  @HiveField(12)
+  DateTime? eventStartDate; // 이벤트 시작일
+
+  @HiveField(13)
+  DateTime? eventEndDate; // 이벤트 종료일
+
+  @HiveField(14)
+  double? eventPrice; // 이벤트 기간 중 가격
+
+  SubscriptionModel({
+    required this.id,
+    required this.serviceName,
+    required this.monthlyCost,
+    required this.billingCycle,
+    required this.nextBillingDate,
+    this.isAutoDetected = false,
+    this.categoryId,
+    this.websiteUrl,
+    this.repeatCount = 1,
+    this.lastPaymentDate,
+    this.currency = 'KRW', // 기본값은 KRW
+    this.isEventActive = false, // 기본값은 false
+    this.eventStartDate,
+    this.eventEndDate,
+    this.eventPrice,
+  });
+
+  // 주기적 결제 여부 확인
+  bool get isRecurring => repeatCount > 1;
+
+  // 현재 이벤트 기간인지 확인
+  bool get isCurrentlyInEvent {
+    if (!isEventActive || eventStartDate == null || eventEndDate == null) {
+      return false;
+    }
+    
+    final now = DateTime.now();
+    return now.isAfter(eventStartDate!) && now.isBefore(eventEndDate!);
+  }
+
+  // 현재 적용되는 가격 (이벤트 또는 정상 가격)
+  double get currentPrice {
+    if (isCurrentlyInEvent && eventPrice != null) {
+      return eventPrice!;
+    }
+    return monthlyCost;
+  }
+
+  // 이벤트로 인한 절약액
+  double get eventSavings {
+    if (isCurrentlyInEvent && eventPrice != null) {
+      return monthlyCost - eventPrice!;
+    }
+    return 0;
+  }
+}
+
+// Hive TypeAdapter 생성을 위한 명령어
+// flutter pub run build_runner build

lib/models/subscription_model.g.dart

@@ -0,0 +1,83 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'subscription_model.dart';
+
+// **************************************************************************
+// TypeAdapterGenerator
+// **************************************************************************
+
+class SubscriptionModelAdapter extends TypeAdapter<SubscriptionModel> {
+  @override
+  final int typeId = 0;
+
+  @override
+  SubscriptionModel read(BinaryReader reader) {
+    final numOfFields = reader.readByte();
+    final fields = <int, dynamic>{
+      for (int i = 0; i < numOfFields; i++) reader.readByte(): reader.read(),
+    };
+    return SubscriptionModel(
+      id: fields[0] as String,
+      serviceName: fields[1] as String,
+      monthlyCost: fields[2] as double,
+      billingCycle: fields[3] as String,
+      nextBillingDate: fields[4] as DateTime,
+      isAutoDetected: fields[5] as bool,
+      categoryId: fields[6] as String?,
+      websiteUrl: fields[7] as String?,
+      repeatCount: fields[8] as int,
+      lastPaymentDate: fields[9] as DateTime?,
+      currency: fields[10] as String,
+      isEventActive: fields[11] as bool,
+      eventStartDate: fields[12] as DateTime?,
+      eventEndDate: fields[13] as DateTime?,
+      eventPrice: fields[14] as double?,
+    );
+  }
+
+  @override
+  void write(BinaryWriter writer, SubscriptionModel obj) {
+    writer
+      ..writeByte(15)
+      ..writeByte(0)
+      ..write(obj.id)
+      ..writeByte(1)
+      ..write(obj.serviceName)
+      ..writeByte(2)
+      ..write(obj.monthlyCost)
+      ..writeByte(3)
+      ..write(obj.billingCycle)
+      ..writeByte(4)
+      ..write(obj.nextBillingDate)
+      ..writeByte(5)
+      ..write(obj.isAutoDetected)
+      ..writeByte(6)
+      ..write(obj.categoryId)
+      ..writeByte(7)
+      ..write(obj.websiteUrl)
+      ..writeByte(8)
+      ..write(obj.repeatCount)
+      ..writeByte(9)
+      ..write(obj.lastPaymentDate)
+      ..writeByte(10)
+      ..write(obj.currency)
+      ..writeByte(11)
+      ..write(obj.isEventActive)
+      ..writeByte(12)
+      ..write(obj.eventStartDate)
+      ..writeByte(13)
+      ..write(obj.eventEndDate)
+      ..writeByte(14)
+      ..write(obj.eventPrice);
+  }
+
+  @override
+  int get hashCode => typeId.hashCode;
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is SubscriptionModelAdapter &&
+          runtimeType == other.runtimeType &&
+          typeId == other.typeId;
+}