базовая логика скачивания обновлений

lib/features/launcher/domain/entities/local_client_file.dart

@@ -0,0 +1,18 @@
+import 'client_hash_entry.dart';
+
+final class LocalClientFile implements ClientHashEntry {
+  @override
+  final String path;
+
+  @override
+  final int size;
+
+  @override
+  final String sha256;
+
+  const LocalClientFile({
+    required this.path,
+    required this.size,
+    required this.sha256,
+  });
+}