feat(apps): 重构 UI 架构为 presentation 层并新增 l10n 国际化支持

apps/lib/shared/widgets/app_pull_refresh_feedback.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 
+import '../../core/l10n/l10n.dart';
 import '../../core/theme/design_tokens.dart';
 import 'app_loading_indicator.dart';
 
@@ -7,16 +8,17 @@ class AppPullRefreshFeedback extends StatelessWidget {
   const AppPullRefreshFeedback({
     super.key,
     required this.visible,
-    this.label = '正在刷新',
+    this.label,
     this.margin = const EdgeInsets.only(top: AppSpacing.sm),
   });
 
   final bool visible;
-  final String label;
+  final String? label;
   final EdgeInsetsGeometry margin;
 
   @override
   Widget build(BuildContext context) {
+    final resolvedLabel = label ?? context.l10n.commonRefreshing;
     return IgnorePointer(
       child: AnimatedOpacity(
         opacity: visible ? 1 : 0,
@@ -44,7 +46,7 @@ class AppPullRefreshFeedback extends StatelessWidget {
               ),
               const SizedBox(width: AppSpacing.sm),
               Text(
-                label,
+                resolvedLabel,
                 style: Theme.of(context).textTheme.labelSmall?.copyWith(
                   color: AppColors.slate600,
                   fontWeight: FontWeight.w500,