feat: добавить репозитории Hive для тегов и транзакций

lib/data/repositories/hive_tag_repository.dart

@@ -0,0 +1,34 @@
+import 'package:hive/hive.dart';
+import '../interfaces/itag_repository.dart';
+import '../../models/tag.dart';
+
+class HiveTagRepository implements ITagRepository {
+  final Box<Tag> _box;
+
+  HiveTagRepository(this._box);
+
+  @override
+  Future<List<Tag>> getAll() async {
+    return _box.values.toList();
+  }
+
+  @override
+  Future<Tag?> getById(String id) async {
+    return _box.get(id);
+  }
+
+  @override
+  Future<void> add(Tag tag) async {
+    await _box.put(tag.id, tag);
+  }
+
+  @override
+  Future<void> update(Tag tag) async {
+    await add(tag);
+  }
+
+  @override
+  Future<void> delete(String id) async {
+    await _box.delete(id);
+  }
+}

lib/data/repositories/hive_transaction_repository.dart

@@ -0,0 +1,55 @@
+import 'package:hive/hive.dart';
+import '../interfaces/itransaction_repository.dart';
+import '../../models/transaction_record.dart';
+
+class HiveTransactionRepository implements ITransactionRepository {
+  final Box<TransactionRecord> _box;
+
+  HiveTransactionRepository(this._box);
+
+  @override
+  Future<List<TransactionRecord>> getAll() async {
+    return _box.values.toList();
+  }
+
+  @override
+  Future<TransactionRecord?> getById(String id) async {
+    return _box.get(id);
+  }
+
+  @override
+  Future<void> add(TransactionRecord transaction) async {
+    await _box.put(transaction.id, transaction);
+  }
+
+  @override
+  Future<void> update(TransactionRecord transaction) async {
+    await add(transaction);
+  }
+
+  @override
+  Future<void> delete(String id) async {
+    await _box.delete(id);
+  }
+
+  @override
+  Future<List<TransactionRecord>> getByDateRange(DateTime from, DateTime to) async {
+    return _box.values
+        .where((t) => t.dateTime.isAfter(from) && t.dateTime.isBefore(to))
+        .toList();
+  }
+
+  @override
+  Future<List<TransactionRecord>> getByCategory(String categoryId) async {
+    return _box.values
+        .where((t) => t.category.id == categoryId)
+        .toList();
+  }
+
+  @override
+  Future<List<TransactionRecord>> getByTag(String tagId) async {
+    return _box.values
+        .where((t) => t.tag?.id == tagId)
+        .toList();
+  }
+}