feat: align shared app foundations

lib/common/widgets/app_refresh.dart

@@ -0,0 +1,28 @@
+import 'package:easy_refresh/easy_refresh.dart';
+import 'package:flutter/widgets.dart';
+
+typedef RefreshAction = Future<void> Function();
+
+/// Shared pull-to-refresh and load-more wrapper for future list features.
+class AppRefresh extends StatelessWidget {
+  const AppRefresh({
+    super.key,
+    required this.child,
+    this.onRefresh,
+    this.onLoad,
+    this.controller,
+  });
+
+  final Widget child;
+  final RefreshAction? onRefresh;
+  final RefreshAction? onLoad;
+  final EasyRefreshController? controller;
+
+  @override
+  Widget build(BuildContext context) => EasyRefresh(
+    controller: controller,
+    onRefresh: onRefresh,
+    onLoad: onLoad,
+    child: child,
+  );
+}