feat(game): 게임 클리어 시 VictoryOverlay 추가

- VictoryOverlay 위젯 신규 생성
- GameSessionController에 isComplete 상태 추가
- 레벨 100 도달 시 승리 오버레이 표시
- 승리 후 명예의 전당 화면으로 이동

lib/src/features/game/game_play_screen.dart

@@ -12,18 +12,16 @@ import 'package:asciineverdie/src/core/animation/ascii_animation_type.dart';
 import 'package:asciineverdie/src/core/engine/story_service.dart';
 import 'package:asciineverdie/src/core/model/combat_event.dart';
 import 'package:asciineverdie/src/core/l10n/game_data_l10n.dart';
-import 'package:asciineverdie/src/core/model/combat_stats.dart';
 import 'package:asciineverdie/src/core/model/game_state.dart';
-import 'package:asciineverdie/src/core/model/hall_of_fame.dart';
 import 'package:asciineverdie/src/core/model/skill.dart';
 import 'package:asciineverdie/src/core/notification/notification_service.dart';
-import 'package:asciineverdie/src/core/storage/hall_of_fame_storage.dart';
 import 'package:asciineverdie/src/core/util/pq_logic.dart' as pq_logic;
 import 'package:asciineverdie/src/features/game/game_session_controller.dart';
 import 'package:asciineverdie/src/features/hall_of_fame/hall_of_fame_screen.dart';
 import 'package:asciineverdie/src/features/game/widgets/cinematic_view.dart';
 import 'package:asciineverdie/src/features/game/widgets/combat_log.dart';
 import 'package:asciineverdie/src/features/game/widgets/death_overlay.dart';
+import 'package:asciineverdie/src/features/game/widgets/victory_overlay.dart';
 import 'package:asciineverdie/src/features/game/widgets/hp_mp_bar.dart';
 import 'package:asciineverdie/src/features/game/widgets/notification_overlay.dart';
 import 'package:asciineverdie/src/features/game/widgets/stats_panel.dart';
@@ -138,14 +136,9 @@ class _GamePlayScreenState extends State<GamePlayScreen>
       if (newAct != _lastAct && !_showingCinematic) {
         _lastAct = newAct;
 
-        // Phase 10: 엔딩 도달 시 클리어 처리 (시네마틱 대신 클리어 다이얼로그)
-        // 다음 프레임에서 실행 (리스너 콜백 중 showDialog 문제 방지)
-        if (newAct == StoryAct.ending && state.traits.level >= 100) {
-          WidgetsBinding.instance.addPostFrameCallback((_) {
-            if (mounted) _handleGameClear(state);
-          });
-        } else {
-          // 일반 Act 전환 시 시네마틱 표시
+        // 엔딩은 controller.isComplete 상태에서 VictoryOverlay로 처리
+        // 일반 Act 전환 시에만 시네마틱 표시
+        if (newAct != StoryAct.ending) {
           WidgetsBinding.instance.addPostFrameCallback((_) {
             if (mounted) _showCinematicForAct(newAct);
           });
@@ -419,49 +412,13 @@ class _GamePlayScreenState extends State<GamePlayScreen>
     _showingCinematic = false;
   }
 
-  /// Phase 10: 게임 클리어 처리 (Handle Game Clear)
-  Future<void> _handleGameClear(GameState state) async {
-    // 게임 일시 정지
-    await widget.controller.pause(saveOnStop: true);
-
-    // 최종 전투 스탯 계산
-    final combatStats = CombatStats.fromStats(
-      stats: state.stats,
-      equipment: state.equipment,
-      level: state.traits.level,
+  /// VictoryOverlay 완료 후 명예의 전당 화면으로 이동
+  void _handleVictoryComplete() {
+    Navigator.of(context).pushReplacement(
+      MaterialPageRoute<void>(
+        builder: (context) => const HallOfFameScreen(),
+      ),
     );
-
-    // 명예의 전당 엔트리 생성
-    final entry = HallOfFameEntry.fromGameState(
-      state: state,
-      totalDeaths: state.progress.deathCount,
-      monstersKilled: state.progress.monstersKilled,
-      combatStats: combatStats,
-    );
-
-    // 명예의 전당에 저장
-    final storage = HallOfFameStorage();
-    await storage.addEntry(entry);
-
-    // 클리어 다이얼로그 표시
-    if (mounted) {
-      await showGameClearDialog(
-        context,
-        entry: entry,
-        onNewGame: () {
-          // 프론트 화면으로 돌아가기
-          Navigator.of(context).popUntil((route) => route.isFirst);
-        },
-        onViewHallOfFame: () {
-          // 명예의 전당 화면으로 이동
-          Navigator.of(context).pushReplacement(
-            MaterialPageRoute<void>(
-              builder: (context) => const HallOfFameScreen(),
-            ),
-          );
-        },
-      );
-    }
   }
 
   void _resetSpecialAnimationAfterFrame() {
@@ -857,6 +814,15 @@ class _GamePlayScreenState extends State<GamePlayScreen>
                   traits: state.traits,
                   onResurrect: _handleResurrect,
                 ),
+              // 승리 오버레이 (게임 클리어)
+              if (widget.controller.isComplete)
+                VictoryOverlay(
+                  traits: state.traits,
+                  stats: state.stats,
+                  progress: state.progress,
+                  elapsedMs: state.skillSystem.elapsedMs,
+                  onComplete: _handleVictoryComplete,
+                ),
             ],
           ),
         ),
@@ -990,6 +956,15 @@ class _GamePlayScreenState extends State<GamePlayScreen>
                   traits: state.traits,
                   onResurrect: _handleResurrect,
                 ),
+              // 승리 오버레이 (게임 클리어)
+              if (widget.controller.isComplete)
+                VictoryOverlay(
+                  traits: state.traits,
+                  stats: state.stats,
+                  progress: state.progress,
+                  elapsedMs: state.skillSystem.elapsedMs,
+                  onComplete: _handleVictoryComplete,
+                ),
             ],
           ),
         ),