feat: 초기 프로젝트 설정 및 LunchPick 앱 구현

LunchPick(오늘 뭐 먹Z?) Flutter 앱의 초기 구현입니다.

주요 기능:
- 네이버 지도 연동 맛집 추가
- 랜덤 메뉴 추천 시스템
- 날씨 기반 거리 조정
- 방문 기록 관리
- Bluetooth 맛집 공유
- 다크모드 지원

기술 스택:
- Flutter 3.8.1+
- Riverpod 상태 관리
- Hive 로컬 DB
- Clean Architecture

🤖 Generated with Claude Code

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

lib/data/repositories/visit_repository_impl.dart

@@ -0,0 +1,127 @@
+import 'package:hive_flutter/hive_flutter.dart';
+import 'package:lunchpick/domain/entities/visit_record.dart';
+import 'package:lunchpick/domain/repositories/visit_repository.dart';
+
+class VisitRepositoryImpl implements VisitRepository {
+  static const String _boxName = 'visit_records';
+  
+  Future<Box<VisitRecord>> get _box async => 
+      await Hive.openBox<VisitRecord>(_boxName);
+
+  @override
+  Future<List<VisitRecord>> getAllVisitRecords() async {
+    final box = await _box;
+    final records = box.values.toList();
+    records.sort((a, b) => b.visitDate.compareTo(a.visitDate));
+    return records;
+  }
+
+  @override
+  Future<List<VisitRecord>> getVisitRecordsByRestaurantId(String restaurantId) async {
+    final records = await getAllVisitRecords();
+    return records.where((r) => r.restaurantId == restaurantId).toList();
+  }
+
+  @override
+  Future<List<VisitRecord>> getVisitRecordsByDate(DateTime date) async {
+    final records = await getAllVisitRecords();
+    return records.where((record) {
+      return record.visitDate.year == date.year &&
+          record.visitDate.month == date.month &&
+          record.visitDate.day == date.day;
+    }).toList();
+  }
+
+  @override
+  Future<List<VisitRecord>> getVisitRecordsByDateRange({
+    required DateTime startDate,
+    required DateTime endDate,
+  }) async {
+    final records = await getAllVisitRecords();
+    return records.where((record) {
+      return record.visitDate.isAfter(startDate.subtract(const Duration(days: 1))) &&
+          record.visitDate.isBefore(endDate.add(const Duration(days: 1)));
+    }).toList();
+  }
+
+  @override
+  Future<void> addVisitRecord(VisitRecord visitRecord) async {
+    final box = await _box;
+    await box.put(visitRecord.id, visitRecord);
+  }
+
+  @override
+  Future<void> updateVisitRecord(VisitRecord visitRecord) async {
+    final box = await _box;
+    await box.put(visitRecord.id, visitRecord);
+  }
+
+  @override
+  Future<void> deleteVisitRecord(String id) async {
+    final box = await _box;
+    await box.delete(id);
+  }
+
+  @override
+  Future<void> confirmVisit(String visitRecordId) async {
+    final box = await _box;
+    final record = box.get(visitRecordId);
+    if (record != null) {
+      final updatedRecord = VisitRecord(
+        id: record.id,
+        restaurantId: record.restaurantId,
+        visitDate: record.visitDate,
+        isConfirmed: true,
+        createdAt: record.createdAt,
+      );
+      await updateVisitRecord(updatedRecord);
+    }
+  }
+
+  @override
+  Stream<List<VisitRecord>> watchVisitRecords() async* {
+    final box = await _box;
+    try {
+      yield await getAllVisitRecords();
+    } catch (_) {
+      yield <VisitRecord>[];
+    }
+    yield* box.watch().asyncMap((_) async => await getAllVisitRecords());
+  }
+
+  @override
+  Future<DateTime?> getLastVisitDate(String restaurantId) async {
+    final records = await getVisitRecordsByRestaurantId(restaurantId);
+    if (records.isEmpty) return null;
+    
+    // 이미 visitDate 기준으로 정렬되어 있으므로 첫 번째가 가장 최근
+    return records.first.visitDate;
+  }
+
+  @override
+  Future<Map<String, int>> getMonthlyVisitStats(int year, int month) async {
+    final startDate = DateTime(year, month, 1);
+    final endDate = DateTime(year, month + 1, 0); // 해당 월의 마지막 날
+    
+    final records = await getVisitRecordsByDateRange(
+      startDate: startDate,
+      endDate: endDate,
+    );
+
+    final stats = <String, int>{};
+    for (final record in records) {
+      final dayKey = record.visitDate.day.toString();
+      stats[dayKey] = (stats[dayKey] ?? 0) + 1;
+    }
+    
+    return stats;
+  }
+
+  @override
+  Future<Map<String, int>> getCategoryVisitStats() async {
+    // 이 메서드는 RestaurantRepository와 연동이 필요하므로
+    // 실제 구현은 UseCase나 Provider 레벨에서 처리
+    // 여기서는 빈 Map 반환
+    return {};
+  }
+}