feat(i18n): 다국어 번역 확장 및 UI 개선

- 영어/일본어/한국어/중국어 번역 추가
- VictoryOverlay 레이아웃 개선
- NewCharacterScreen 기능 추가

lib/l10n/app_localizations_zh.dart

@@ -241,4 +241,54 @@ class L10nZh extends L10n {
 
   @override
   String get soldButton => 'Sold!';
+
+  @override
+  String get endingCongratulations => '★ 恭喜通关 ★';
+
+  @override
+  String get endingGameComplete => '您已完成游戏！';
+
+  @override
+  String get endingTheHero => '英雄';
+
+  @override
+  String endingLevelFormat(int level) {
+    return '等级 $level';
+  }
+
+  @override
+  String get endingJourneyStats => '冒险记录';
+
+  @override
+  String get endingMonstersSlain => '击败的怪物';
+
+  @override
+  String get endingQuestsCompleted => '完成的任务';
+
+  @override
+  String get endingPlayTime => '游戏时间';
+
+  @override
+  String get endingFinalStats => '最终属性';
+
+  @override
+  String get endingCredits => '制作人员';
+
+  @override
+  String get endingThankYou => '感谢您的游玩！';
+
+  @override
+  String get endingLegendLivesOn => '您的传奇将永远流传...';
+
+  @override
+  String get endingHallOfFameLine1 => '您的英雄事迹';
+
+  @override
+  String get endingHallOfFameLine2 => '将被铭记于荣誉殿堂';
+
+  @override
+  String get endingSkip => '跳过';
+
+  @override
+  String get endingTapToSkip => '点击跳过';
 }