diff --git a/lib/src/core/engine/test_character_service.dart b/lib/src/core/engine/test_character_service.dart
index 1039f2c..2125ff5 100644
--- a/lib/src/core/engine/test_character_service.dart
+++ b/lib/src/core/engine/test_character_service.dart
@@ -142,16 +142,8 @@ class TestCharacterService {
         'Exception Handler',
         'Null Guard',
       ],
-      EquipmentSlot.helm => [
-        'Neural Helm',
-        'Thought Processor',
-        'Mind Buffer',
-      ],
-      EquipmentSlot.hauberk => [
-        'Matrix Armor',
-        'Byte Mail',
-        'Kernel Plate',
-      ],
+      EquipmentSlot.helm => ['Neural Helm', 'Thought Processor', 'Mind Buffer'],
+      EquipmentSlot.hauberk => ['Matrix Armor', 'Byte Mail', 'Kernel Plate'],
       EquipmentSlot.brassairts => [
         'Bit Guards',
         'Stream Bracers',
@@ -167,11 +159,7 @@ class TestCharacterService {
         'Handler Mitts',
         'Pointer Grips',
       ],
-      EquipmentSlot.gambeson => [
-        'Layer Vest',
-        'Cache Coat',
-        'Buffer Jacket',
-      ],
+      EquipmentSlot.gambeson => ['Layer Vest', 'Cache Coat', 'Buffer Jacket'],
       EquipmentSlot.cuisses => [
         'Register Guards',
         'Stack Protectors',
diff --git a/lib/src/core/l10n/game_data_l10n.dart b/lib/src/core/l10n/game_data_l10n.dart
index b81ec55..e7a2ac7 100644
--- a/lib/src/core/l10n/game_data_l10n.dart
+++ b/lib/src/core/l10n/game_data_l10n.dart
@@ -450,7 +450,9 @@ class GameDataL10n {
     final special = words.last;
 
     // Attrib와 Special이 유효한지 확인
-    final attribMap = isKo ? itemAttribTranslationsKo : itemAttribTranslationsJa;
+    final attribMap = isKo
+        ? itemAttribTranslationsKo
+        : itemAttribTranslationsJa;
     final specialMap = isKo ? specialTranslationsKo : specialTranslationsJa;
     if (!attribMap.containsKey(attrib) && !specialMap.containsKey(special)) {
       return null;
@@ -472,7 +474,9 @@ class GameDataL10n {
   static String? _tryTranslateMonsterDrop(String itemString, bool isKo) {
     // 드롭 아이템 번역 맵 선택 (통합 맵 사용)
     final dropMap = isKo ? allDropTranslationsKo : allDropTranslationsJa;
-    final monsterMap = isKo ? allMonsterTranslationsKo : allMonsterTranslationsJa;
+    final monsterMap = isKo
+        ? allMonsterTranslationsKo
+        : allMonsterTranslationsJa;
 
     // (대소문자 무시, 아이템 문자열 끝에서 매칭)
     for (final entry in dropMap.entries) {
diff --git a/lib/src/core/model/save_data.dart b/lib/src/core/model/save_data.dart
index eb16d81..56788fb 100644
--- a/lib/src/core/model/save_data.dart
+++ b/lib/src/core/model/save_data.dart
@@ -181,7 +181,10 @@ class GameSave {
             )
             .toList(),
       ),
-      equipment: _equipmentFromJson(equipmentJson, json['version'] as int? ?? 2),
+      equipment: _equipmentFromJson(
+        equipmentJson,
+        json['version'] as int? ?? 2,
+      ),
       skillBook: SkillBook(
         skills: skillsJson
             .map(
@@ -333,10 +336,7 @@ Equipment _equipmentFromJson(Map<String, dynamic> json, int version) {
       }
     }
 
-    return Equipment(
-      items: items,
-      bestIndex: json['bestIndex'] as int? ?? 0,
-    );
+    return Equipment(items: items, bestIndex: json['bestIndex'] as int? ?? 0);
   }
 
   // v2 이하: 레거시 형식 (문자열 기반)
diff --git a/lib/src/features/arena/widgets/arena_result_panel.dart b/lib/src/features/arena/widgets/arena_result_panel.dart
index ab01ac0..99cb681 100644
--- a/lib/src/features/arena/widgets/arena_result_panel.dart
+++ b/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,
     };
diff --git a/lib/src/features/front/front_screen.dart b/lib/src/features/front/front_screen.dart
index 673a4ed..ee71eac 100644
--- a/lib/src/features/front/front_screen.dart
+++ b/lib/src/features/front/front_screen.dart
@@ -142,7 +142,8 @@ class _FrontScreenState extends State<FrontScreen> with RouteAware {
                           onHallOfFame: widget.onHallOfFame != null
                               ? () => widget.onHallOfFame!(context)
                               : null,
-                          onLocalArena: widget.onLocalArena != null &&
+                          onLocalArena:
+                              widget.onLocalArena != null &&
                                   widget.hallOfFameCount >= 2
                               ? () => widget.onLocalArena!(context)
                               : null,
diff --git a/lib/src/features/settings/settings_screen.dart b/lib/src/features/settings/settings_screen.dart
index 49ecd23..3a09923 100644
--- a/lib/src/features/settings/settings_screen.dart
+++ b/lib/src/features/settings/settings_screen.dart
@@ -206,7 +206,9 @@ class _SettingsScreenState extends State<SettingsScreen> {
 
   Widget _buildDebugSection() {
     return Card(
-      color: Theme.of(context).colorScheme.errorContainer.withValues(alpha: 0.3),
+      color: Theme.of(
+        context,
+      ).colorScheme.errorContainer.withValues(alpha: 0.3),
       child: Padding(
         padding: const EdgeInsets.all(16),
         child: Column(
diff --git a/test/core/util/balance_analysis_test.dart b/test/core/util/balance_analysis_test.dart
index f8b9bcf..5115f3b 100644
--- a/test/core/util/balance_analysis_test.dart
+++ b/test/core/util/balance_analysis_test.dart
@@ -64,7 +64,9 @@ void main() {
         final diagnosis = sim.winRate >= targetWinRate
             ? '✓ 적정'
             : '✗ 조정필요 (목표: ${(targetWinRate * 100).toStringAsFixed(0)}%)';
-        print('레벨 $level (${tier.name}): 승률 ${(sim.winRate * 100).toStringAsFixed(0)}% $diagnosis');
+        print(
+          '레벨 $level (${tier.name}): 승률 ${(sim.winRate * 100).toStringAsFixed(0)}% $diagnosis',
+        );
       }
 
       print('\n${'=' * 80}');
@@ -88,7 +90,9 @@ void main() {
       final minDamage = (monster.atk * 0.8 - player.def * 0.3).round();
       final maxDamage = (monster.atk * 1.2 - player.def * 0.3).round();
       print('- 몬스터 데미지: $minDamage ~ $maxDamage');
-      print('- 플레이어 생존 히트: ${(player.hp / maxDamage).floor()} ~ ${(player.hp / minDamage).ceil()}');
+      print(
+        '- 플레이어 생존 히트: ${(player.hp / maxDamage).floor()} ~ ${(player.hp / minDamage).ceil()}',
+      );
 
       print('\n#### 적용된 밸런스 수정');
       print('1. 플레이어 HP 스케일링 상향:');
@@ -136,7 +140,8 @@ _PlayerEstimate _estimatePlayerStats(int level) {
 
   // 장비 스탯 추정 (레벨 * 0.8 수준의 common 장비 10개)
   final equipLevel = (level * 0.8).round().clamp(1, level);
-  final equipBaseValue = (equipLevel * 1.2 * ItemRarity.common.multiplier).round();
+  final equipBaseValue = (equipLevel * 1.2 * ItemRarity.common.multiplier)
+      .round();
 
   // 무기 ATK (speedMultiplier 1.0 가정)
   final weaponAtk = equipBaseValue;
@@ -182,8 +187,14 @@ _CombatSimulation _simulateCombat(int level) {
 
   // 데미지 계산 (combat_calculator 평균)
   // damage = ATK * 1.0 - DEF * 0.5 (DEF 감산율 상향)
-  final monsterDamage = (monster.atk * 1.0 - player.def * 0.5).round().clamp(1, 9999);
-  final playerDamage = (player.atk * 1.0 - monster.def * 0.5).round().clamp(1, 9999);
+  final monsterDamage = (monster.atk * 1.0 - player.def * 0.5).round().clamp(
+    1,
+    9999,
+  );
+  final playerDamage = (player.atk * 1.0 - monster.def * 0.5).round().clamp(
+    1,
+    9999,
+  );
 
   // 생존 히트 수
   final playerHits = (player.hp / monsterDamage).ceil();
@@ -194,8 +205,8 @@ _CombatSimulation _simulateCombat(int level) {
   final winRate = playerHits > monsterHits
       ? 0.95 // 압도적 유리
       : playerHits == monsterHits
-          ? 0.65 // 동등 (선공 이점)
-          : (playerHits / monsterHits).clamp(0.2, 0.9);
+      ? 0.65 // 동등 (선공 이점)
+      : (playerHits / monsterHits).clamp(0.2, 0.9);
 
   return _CombatSimulation(
     monsterDamage: monsterDamage,
diff --git a/test/core/util/balance_constants_test.dart b/test/core/util/balance_constants_test.dart
index 8fc7fde..86b5cf4 100644
--- a/test/core/util/balance_constants_test.dart
+++ b/test/core/util/balance_constants_test.dart
@@ -55,8 +55,16 @@ void main() {
         final oldAtk = 10 + level * 12;
         final newAtk = MonsterBaseStats.forLevel(level).atk;
         final ratio = newAtk / oldAtk;
-        expect(ratio, lessThan(0.45), reason: 'Level $level should be < 45% of old');
-        expect(ratio, greaterThan(0.25), reason: 'Level $level should be > 25% of old');
+        expect(
+          ratio,
+          lessThan(0.45),
+          reason: 'Level $level should be < 45% of old',
+        );
+        expect(
+          ratio,
+          greaterThan(0.25),
+          reason: 'Level $level should be > 25% of old',
+        );
       }
 
       // 레벨 1~5는 추가 완화 (기존 대비 더 낮음)
@@ -64,8 +72,16 @@ void main() {
         final oldAtk = 10 + level * 12;
         final newAtk = MonsterBaseStats.forLevel(level).atk;
         final ratio = newAtk / oldAtk;
-        expect(ratio, lessThan(0.35), reason: 'Early level $level should be < 35% of old');
-        expect(ratio, greaterThan(0.15), reason: 'Early level $level should be > 15% of old');
+        expect(
+          ratio,
+          lessThan(0.35),
+          reason: 'Early level $level should be < 35% of old',
+        );
+        expect(
+          ratio,
+          greaterThan(0.15),
+          reason: 'Early level $level should be > 15% of old',
+        );
       }
     });
   });