style: dart format 적용

lib/src/features/arena/widgets/arena_result_panel.dart

@@ -96,7 +96,8 @@ class _ArenaResultPanelState extends State<ArenaResultPanel>
 
     try {
       // macOS: Downloads 폴더에 저장 (사용자가 쉽게 찾을 수 있도록)
-      final directory = await getDownloadsDirectory() ??
+      final directory =
+          await getDownloadsDirectory() ??
           await getApplicationDocumentsDirectory();
       final timestamp = DateTime.now().toIso8601String().replaceAll(':', '-');
       final challenger = widget.result.match.challenger.characterName;
@@ -164,13 +165,15 @@ class _ArenaResultPanelState extends State<ArenaResultPanel>
       'class': entry.klass,
       'combatStats': entry.finalStats?.toJson(),
       'equipment': entry.finalEquipment
-          ?.map((EquipmentItem e) => {
-                'slot': e.slot.name,
-                'name': e.name,
-                'level': e.level,
-                'rarity': e.rarity.name,
-                'stats': e.stats.toJson(),
-              })
+          ?.map(
+            (EquipmentItem e) => {
+              'slot': e.slot.name,
+              'name': e.name,
+              'level': e.level,
+              'rarity': e.rarity.name,
+              'stats': e.stats.toJson(),
+            },
+          )
           .toList(),
       'skills': entry.finalSkills,
     };