전역 구조 리팩터링 및 테스트 확장

lib/widgets/components/empty_state.dart

@@ -1,11 +1,21 @@
 import 'package:flutter/material.dart';
+import 'package:lucide_icons_flutter/lucide_icons.dart' as lucide;
 import 'package:shadcn_ui/shadcn_ui.dart';
 
-class EmptyState extends StatelessWidget {
-  const EmptyState({super.key, required this.message, this.icon});
+/// 데이터가 없을 때 사용자에게 명확한 안내를 제공하는 공통 위젯.
+class SuperportEmptyState extends StatelessWidget {
+  const SuperportEmptyState({
+    super.key,
+    required this.title,
+    this.description,
+    this.icon = lucide.LucideIcons.inbox,
+    this.action,
+  });
 
-  final String message;
+  final String title;
+  final String? description;
   final IconData? icon;
+  final Widget? action;
 
   @override
   Widget build(BuildContext context) {
@@ -16,8 +26,17 @@ class EmptyState extends StatelessWidget {
         children: [
           if (icon != null)
             Icon(icon, size: 48, color: theme.colorScheme.mutedForeground),
-          if (icon != null) const SizedBox(height: 16),
-          Text(message, style: theme.textTheme.muted),
+          const SizedBox(height: 16),
+          Text(title, style: theme.textTheme.h4),
+          if (description != null) ...[
+            const SizedBox(height: 8),
+            Text(
+              description!,
+              style: theme.textTheme.muted,
+              textAlign: TextAlign.center,
+            ),
+          ],
+          if (action != null) ...[const SizedBox(height: 20), action!],
         ],
       ),
     );