fix(i18n): VictoryOverlay 번역 및 개선

- 일본어/중국어 번역 수정
- game_text_l10n 번역 데이터 정리
- VictoryOverlay 레이아웃 개선
- GameSessionController 상태 관리 개선

lib/data/game_text_l10n.dart

@@ -1211,9 +1211,9 @@ String get uiHallOfFame {
 }
 
 String get frontDescription {
-  if (isKoreanLocale) return 'Flutter로 재구축된 오프라인 Progress Quest (PQ 6.4)';
-  if (isJapaneseLocale) return 'Flutterで再構築されたオフラインProgress Quest (PQ 6.4)';
-  return 'Offline Progress Quest (PQ 6.4) rebuilt with Flutter.';
+  if (isKoreanLocale) return '레트로 감성의 오프라인 싱글플레이어 RPG';
+  if (isJapaneseLocale) return 'レトロ感のあるオフラインシングルプレイヤーRPG';
+  return 'A retro-style offline single-player RPG';
 }
 
 String get frontTodayFocus {
@@ -1913,7 +1913,7 @@ String get uiAbout {
 }
 
 String get uiAboutDescription {
-  if (isKoreanLocale) return 'Progress Quest 6.4를 Flutter로 재구현한 오프라인 싱글플레이어 RPG입니다.';
-  if (isJapaneseLocale) return 'Progress Quest 6.4をFlutterで再実装したオフラインシングルプレイヤーRPGです。';
-  return 'An offline single-player RPG reimplementation of Progress Quest 6.4 in Flutter.';
+  if (isKoreanLocale) return 'ASCII 아트와 레트로 감성의 오프라인 싱글플레이어 RPG입니다.';
+  if (isJapaneseLocale) return 'ASCIIアートとレトロ感のあるオフラインシングルプレイヤーRPGです。';
+  return 'An offline single-player RPG with ASCII art and retro vibes.';
 }

lib/l10n/app_ja.arb

@@ -16,7 +16,7 @@
   "saveProgressQuestion": "Save your progress before leaving?",
   "exitWithoutSaving": "Exit without saving",
   "saveAndExit": "Save and Exit",
-  "progressQuestTitle": "Progress Quest - {name}",
+  "progressQuestTitle": "ASCII NEVER DIE - {name}",
   "levelUp": "Level Up",
   "completeQuest": "Complete Quest",
   "completePlot": "Complete Plot",
@@ -62,7 +62,7 @@
   "actNumber": "Act {number}",
   "noActiveQuests": "No active quests",
   "questNumber": "Quest #{number}",
-  "welcomeMessage": "Welcome to Progress Quest!",
+  "welcomeMessage": "ASCII NEVER DIEへようこそ！",
   "noSavedGames": "No saved games found.",
   "loadError": "Failed to load save file: {error}",
   "name": "Name",

lib/l10n/app_localizations_ja.dart

@@ -55,7 +55,7 @@ class L10nJa extends L10n {
 
   @override
   String progressQuestTitle(String name) {
-    return 'Progress Quest - $name';
+    return 'ASCII NEVER DIE - $name';
   }
 
   @override
@@ -200,7 +200,7 @@ class L10nJa extends L10n {
   }
 
   @override
-  String get welcomeMessage => 'Welcome to Progress Quest!';
+  String get welcomeMessage => 'ASCII NEVER DIEへようこそ！';
 
   @override
   String get noSavedGames => 'No saved games found.';

lib/l10n/app_localizations_zh.dart

@@ -55,7 +55,7 @@ class L10nZh extends L10n {
 
   @override
   String progressQuestTitle(String name) {
-    return 'Progress Quest - $name';
+    return 'ASCII NEVER DIE - $name';
   }
 
   @override
@@ -200,7 +200,7 @@ class L10nZh extends L10n {
   }
 
   @override
-  String get welcomeMessage => 'Welcome to Progress Quest!';
+  String get welcomeMessage => '欢迎来到ASCII NEVER DIE！';
 
   @override
   String get noSavedGames => 'No saved games found.';

lib/l10n/app_zh.arb

@@ -16,7 +16,7 @@
   "saveProgressQuestion": "Save your progress before leaving?",
   "exitWithoutSaving": "Exit without saving",
   "saveAndExit": "Save and Exit",
-  "progressQuestTitle": "Progress Quest - {name}",
+  "progressQuestTitle": "ASCII NEVER DIE - {name}",
   "levelUp": "Level Up",
   "completeQuest": "Complete Quest",
   "completePlot": "Complete Plot",
@@ -62,7 +62,7 @@
   "actNumber": "Act {number}",
   "noActiveQuests": "No active quests",
   "questNumber": "Quest #{number}",
-  "welcomeMessage": "Welcome to Progress Quest!",
+  "welcomeMessage": "欢迎来到ASCII NEVER DIE！",
   "noSavedGames": "No saved games found.",
   "loadError": "Failed to load save file: {error}",
   "name": "Name",

lib/src/features/game/game_session_controller.dart

@@ -316,6 +316,12 @@ class GameSessionController extends ChangeNotifier {
       // 통계 기록
       await _statisticsStorage.recordGameComplete();
       debugPrint('[HallOfFame] Registration complete');
+
+      // 클리어된 세이브 파일 삭제 (중복 등록 방지)
+      if (success) {
+        final deleteResult = await saveManager.deleteSave();
+        debugPrint('[HallOfFame] Save file deleted: ${deleteResult.success}');
+      }
     } catch (e, st) {
       debugPrint('[HallOfFame] ERROR: $e');
       debugPrint('[HallOfFame] StackTrace: $st');

lib/src/features/game/widgets/victory_overlay.dart

@@ -450,16 +450,16 @@ class _VictoryOverlayState extends State<VictoryOverlay>
 
   Widget _buildTrophyAsciiArt(Color gold) {
     const trophy = '''
-         ___________
-        '._==_==_=_.'
-        .-\\:      /-.
-       | (|:.     |) |
-        '-|:.     |-'
-          \\::.    /
-           '::. .'
-             ) (
-           _.' '._
-          '-------' ''';
+   ___________
+  '._==_==_=_.'
+  .-\\:      /-.
+ | (|:.     |) |
+  '-|:.     |-'
+    \\::.    /
+     '::. .'
+       ) (
+     _.' '._
+    '-------' ''';
 
     return Text(
       trophy,
@@ -476,51 +476,35 @@ class _VictoryOverlayState extends State<VictoryOverlay>
   Widget _buildCredits(BuildContext context) {
     final textPrimary = RetroColors.textPrimaryOf(context);
     final textMuted = RetroColors.textMutedOf(context);
+    final gold = RetroColors.goldOf(context);
 
     return Column(
       children: [
         Text(
-          'Based on',
-          style: TextStyle(
-            fontFamily: 'JetBrainsMono',
-            fontSize: 10,
-            color: textMuted,
-          ),
-        ),
-        const SizedBox(height: 4),
-        Text(
-          'Progress Quest',
+          'ASCII NEVER DIE',
           style: TextStyle(
             fontFamily: 'PressStart2P',
-            fontSize: 10,
+            fontSize: 12,
+            color: gold,
+          ),
+        ),
+        const SizedBox(height: 16),
+        Text(
+          'Thank you for playing!',
+          style: TextStyle(
+            fontFamily: 'JetBrainsMono',
+            fontSize: 12,
             color: textPrimary,
           ),
         ),
-        const SizedBox(height: 4),
+        const SizedBox(height: 8),
         Text(
-          'by Eric Fredricksen',
+          'Your legend lives on...',
           style: TextStyle(
             fontFamily: 'JetBrainsMono',
             fontSize: 10,
             color: textMuted,
-          ),
-        ),
-        const SizedBox(height: 24),
-        Text(
-          'Flutter Port',
-          style: TextStyle(
-            fontFamily: 'JetBrainsMono',
-            fontSize: 10,
-            color: textMuted,
-          ),
-        ),
-        const SizedBox(height: 4),
-        Text(
-          'ASCII Never Die',
-          style: TextStyle(
-            fontFamily: 'PressStart2P',
-            fontSize: 10,
-            color: textPrimary,
+            fontStyle: FontStyle.italic,
           ),
         ),
       ],