feat(hall): Phase 10 명예의 전당 시스템 구현

- HallOfFameEntry 모델 및 HallOfFame 컬렉션 추가
- HallOfFameStorage 저장소 (JSON 파일 기반)
- HallOfFameScreen UI (순위별 색상/아이콘)
- 게임 클리어 시 명예의 전당 등록 처리
- FrontScreen에 명예의 전당 버튼 추가
- 클리어 축하 다이얼로그 구현

lib/src/features/front/front_screen.dart

@@ -3,7 +3,12 @@ import 'package:flutter/material.dart';
 import 'package:askiineverdie/l10n/app_localizations.dart';
 
 class FrontScreen extends StatelessWidget {
-  const FrontScreen({super.key, this.onNewCharacter, this.onLoadSave});
+  const FrontScreen({
+    super.key,
+    this.onNewCharacter,
+    this.onLoadSave,
+    this.onHallOfFame,
+  });
 
   /// "New character" 버튼 클릭 시 호출
   final void Function(BuildContext context)? onNewCharacter;
@@ -11,6 +16,9 @@ class FrontScreen extends StatelessWidget {
   /// "Load save" 버튼 클릭 시 호출
   final Future<void> Function(BuildContext context)? onLoadSave;
 
+  /// "Hall of Fame" 버튼 클릭 시 호출 (Phase 10)
+  final void Function(BuildContext context)? onHallOfFame;
+
   @override
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
@@ -43,6 +51,9 @@ class FrontScreen extends StatelessWidget {
                       onLoadSave: onLoadSave != null
                           ? () => onLoadSave!(context)
                           : () => _showPlaceholder(context),
+                      onHallOfFame: onHallOfFame != null
+                          ? () => onHallOfFame!(context)
+                          : null,
                     ),
                     const SizedBox(height: 24),
                     const _StatusCards(),
@@ -150,10 +161,15 @@ class _HeroHeader extends StatelessWidget {
 }
 
 class _ActionRow extends StatelessWidget {
-  const _ActionRow({required this.onNewCharacter, required this.onLoadSave});
+  const _ActionRow({
+    required this.onNewCharacter,
+    required this.onLoadSave,
+    this.onHallOfFame,
+  });
 
   final VoidCallback onNewCharacter;
   final VoidCallback onLoadSave;
+  final VoidCallback? onHallOfFame;
 
   @override
   Widget build(BuildContext context) {
@@ -187,6 +203,13 @@ class _ActionRow extends StatelessWidget {
           icon: const Icon(Icons.menu_book_outlined),
           label: Text(l10n.viewBuildPlan),
         ),
+        // Phase 10: 명예의 전당 버튼
+        if (onHallOfFame != null)
+          TextButton.icon(
+            onPressed: onHallOfFame,
+            icon: const Icon(Icons.emoji_events_outlined),
+            label: const Text('Hall of Fame'),
+          ),
       ],
     );
   }