refactor(game): 데스크톱 레이아웃을 DesktopGameLayout 위젯으로 분리

- game_play_screen.dart 873줄 → 745줄 (128줄 감소)
- desktop_game_layout.dart 193줄 신규 생성
- 앱바, 3패널 레이아웃, 키보드 단축키를 독립 위젯으로 추출
- MobileCarouselLayout과 동일한 패턴 적용

lib/src/features/game/game_play_screen.dart

@@ -2,7 +2,6 @@ import 'package:flutter/foundation.dart'
     show kIsWeb, defaultTargetPlatform, TargetPlatform;
 import 'package:flutter/material.dart';
 import 'package:flutter/scheduler.dart' show SchedulerBinding, SchedulerPhase;
-import 'package:flutter/services.dart' show KeyDownEvent, LogicalKeyboardKey;
 
 import 'package:asciineverdie/data/game_text_l10n.dart' as game_l10n;
 import 'package:asciineverdie/src/core/engine/iap_service.dart';
@@ -17,12 +16,9 @@ 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/death_overlay.dart';
-import 'package:asciineverdie/src/features/game/widgets/desktop_character_panel.dart';
-import 'package:asciineverdie/src/features/game/widgets/desktop_equipment_panel.dart';
-import 'package:asciineverdie/src/features/game/widgets/desktop_quest_panel.dart';
 import 'package:asciineverdie/src/features/game/widgets/victory_overlay.dart';
 import 'package:asciineverdie/src/features/game/widgets/notification_overlay.dart';
-import 'package:asciineverdie/src/features/game/widgets/task_progress_panel.dart';
+import 'package:asciineverdie/src/features/game/layouts/desktop_game_layout.dart';
 import 'package:asciineverdie/src/features/game/widgets/return_rewards_dialog.dart';
 import 'package:asciineverdie/src/features/game/layouts/mobile_carousel_layout.dart';
 import 'package:asciineverdie/src/features/settings/settings_screen.dart';
@@ -32,7 +28,6 @@ import 'package:asciineverdie/src/core/storage/settings_repository.dart';
 import 'package:asciineverdie/src/core/audio/audio_service.dart';
 import 'package:asciineverdie/src/features/game/controllers/combat_log_controller.dart';
 import 'package:asciineverdie/src/features/game/controllers/game_audio_controller.dart';
-import 'package:asciineverdie/src/shared/retro_colors.dart';
 
 /// 게임 진행 화면 (Main.dfm 기반 3패널 레이아웃)
 ///
@@ -688,120 +683,35 @@ class _GamePlayScreenState extends State<GamePlayScreen>
             }
           }
         },
-        child: Focus(
-          autofocus: true,
-          onKeyEvent: (node, event) => _handleKeyboardShortcut(event, context),
-          child: Scaffold(
-            backgroundColor: RetroColors.deepBrown,
-            appBar: _buildDesktopAppBar(context, state),
-            body: Stack(
+        child: Stack(
           children: [
-                _buildDesktopMainContent(state),
-                ..._buildOverlays(state),
-              ],
-            ),
-          ),
-        ),
-      ),
-    );
-  }
-
-  /// 데스크톱 앱바
-  PreferredSizeWidget _buildDesktopAppBar(
-    BuildContext context,
-    GameState state,
-  ) {
-    return AppBar(
-      backgroundColor: RetroColors.darkBrown,
-      title: Text(
-        L10n.of(context).progressQuestTitle(state.traits.name),
-        style: const TextStyle(
-          fontFamily: 'PressStart2P',
-          fontSize: 15,
-          color: RetroColors.gold,
-        ),
-      ),
-      actions: [
-        if (widget.controller.cheatsEnabled) ...[
-          IconButton(
-            icon: const Text('L+1'),
-            tooltip: L10n.of(context).levelUp,
-            onPressed: () => widget.controller.loop?.cheatCompleteTask(),
-          ),
-          IconButton(
-            icon: const Text('Q!'),
-            tooltip: L10n.of(context).completeQuest,
-            onPressed: () => widget.controller.loop?.cheatCompleteQuest(),
-          ),
-          IconButton(
-            icon: const Text('P!'),
-            tooltip: L10n.of(context).completePlot,
-            onPressed: () => widget.controller.loop?.cheatCompletePlot(),
-          ),
-        ],
-        IconButton(
-          icon: const Icon(Icons.bar_chart),
-          tooltip: game_l10n.uiStatistics,
-          onPressed: () => _showStatisticsDialog(context),
-        ),
-        IconButton(
-          icon: const Icon(Icons.help_outline),
-          tooltip: game_l10n.uiHelp,
-          onPressed: () => HelpDialog.show(context),
-        ),
-        IconButton(
-          icon: const Icon(Icons.settings),
-          tooltip: game_l10n.uiSettings,
-          onPressed: () => _showSettingsScreen(context),
-        ),
-      ],
-    );
-  }
-
-  /// 데스크톱 메인 컨텐츠 (3패널)
-  Widget _buildDesktopMainContent(GameState state) {
-    return Column(
-      children: [
-        TaskProgressPanel(
-          progress: state.progress,
+            DesktopGameLayout(
+              state: state,
+              combatLogEntries: _combatLogController.entries,
               speedMultiplier: widget.controller.loop?.speedMultiplier ?? 1,
               onSpeedCycle: () {
                 widget.controller.loop?.cycleSpeed();
                 setState(() {});
               },
-          isPaused: !widget.controller.isRunning && _specialAnimation == null,
+              isPaused:
+                  !widget.controller.isRunning && _specialAnimation == null,
               onPauseToggle: () async {
                 await widget.controller.togglePause();
                 setState(() {});
               },
               specialAnimation: _specialAnimation,
-          weaponName: state.equipment.weapon,
-          shieldName: state.equipment.shield,
-          characterLevel: state.traits.level,
-          monsterLevel: state.progress.currentTask.monsterLevel,
-          monsterGrade: state.progress.currentTask.monsterGrade,
-          monsterSize: state.progress.currentTask.monsterSize,
-          latestCombatEvent:
-              state.progress.currentCombat?.recentEvents.lastOrNull,
-          raceId: state.traits.raceId,
+              cheatsEnabled: widget.controller.cheatsEnabled,
+              onCheatTask: () => widget.controller.loop?.cheatCompleteTask(),
+              onCheatQuest: () => widget.controller.loop?.cheatCompleteQuest(),
+              onCheatPlot: () => widget.controller.loop?.cheatCompletePlot(),
+              onShowStatistics: () => _showStatisticsDialog(context),
+              onShowHelp: () => HelpDialog.show(context),
+              onShowSettings: () => _showSettingsScreen(context),
             ),
-        Expanded(
-          child: Row(
-            crossAxisAlignment: CrossAxisAlignment.stretch,
-            children: [
-              Expanded(flex: 2, child: DesktopCharacterPanel(state: state)),
-              Expanded(
-                flex: 3,
-                child: DesktopEquipmentPanel(
-                  state: state,
-                  combatLogEntries: _combatLogController.entries,
-                ),
-              ),
-              Expanded(flex: 2, child: DesktopQuestPanel(state: state)),
+            ..._buildOverlays(state),
           ],
         ),
       ),
-      ],
     );
   }
 
@@ -826,47 +736,4 @@ class _GamePlayScreenState extends State<GamePlayScreen>
         ),
     ];
   }
-
-  /// 키보드 단축키 핸들러 (웹/데스크톱)
-  /// Space: 일시정지/재개, S: 속도 변경, H: 도움말, Esc: 설정
-  KeyEventResult _handleKeyboardShortcut(KeyEvent event, BuildContext context) {
-    // KeyDown 이벤트만 처리
-    if (event is! KeyDownEvent) return KeyEventResult.ignored;
-
-    final key = event.logicalKey;
-
-    // Space: 일시정지/재개
-    if (key == LogicalKeyboardKey.space) {
-      widget.controller.togglePause();
-      setState(() {});
-      return KeyEventResult.handled;
-    }
-
-    // S: 속도 변경
-    if (key == LogicalKeyboardKey.keyS) {
-      widget.controller.loop?.cycleSpeed();
-      setState(() {});
-      return KeyEventResult.handled;
-    }
-
-    // H 또는 F1: 도움말
-    if (key == LogicalKeyboardKey.keyH || key == LogicalKeyboardKey.f1) {
-      HelpDialog.show(context);
-      return KeyEventResult.handled;
-    }
-
-    // Escape: 설정
-    if (key == LogicalKeyboardKey.escape) {
-      _showSettingsScreen(context);
-      return KeyEventResult.handled;
-    }
-
-    // I: 통계
-    if (key == LogicalKeyboardKey.keyI) {
-      _showStatisticsDialog(context);
-      return KeyEventResult.handled;
-    }
-
-    return KeyEventResult.ignored;
-  }
 }

lib/src/features/game/layouts/desktop_game_layout.dart

@@ -0,0 +1,190 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart' show KeyDownEvent, LogicalKeyboardKey;
+
+import 'package:asciineverdie/data/game_text_l10n.dart' as game_l10n;
+import 'package:asciineverdie/l10n/app_localizations.dart';
+import 'package:asciineverdie/src/core/model/game_state.dart';
+import 'package:asciineverdie/src/features/game/widgets/combat_log.dart';
+import 'package:asciineverdie/src/features/game/widgets/desktop_character_panel.dart';
+import 'package:asciineverdie/src/features/game/widgets/desktop_equipment_panel.dart';
+import 'package:asciineverdie/src/features/game/widgets/desktop_quest_panel.dart';
+import 'package:asciineverdie/src/features/game/widgets/task_progress_panel.dart';
+import 'package:asciineverdie/src/shared/animation/ascii_animation_type.dart';
+import 'package:asciineverdie/src/shared/retro_colors.dart';
+
+/// 데스크톱 3패널 레이아웃
+///
+/// 웹/데스크톱용 레이아웃:
+/// - 상단: 앱바 (타이틀, 치트/통계/도움말/설정 버튼)
+/// - 중앙 상단: 태스크 진행 패널 (ASCII 애니메이션, 진행 바)
+/// - 중앙 하단: 3패널 (캐릭터 | 장비+전투로그 | 퀘스트)
+class DesktopGameLayout extends StatelessWidget {
+  const DesktopGameLayout({
+    super.key,
+    required this.state,
+    required this.combatLogEntries,
+    required this.speedMultiplier,
+    required this.onSpeedCycle,
+    required this.isPaused,
+    required this.onPauseToggle,
+    this.specialAnimation,
+    this.cheatsEnabled = false,
+    this.onCheatTask,
+    this.onCheatQuest,
+    this.onCheatPlot,
+    this.onShowStatistics,
+    this.onShowHelp,
+    this.onShowSettings,
+  });
+
+  final GameState state;
+  final List<CombatLogEntry> combatLogEntries;
+  final int speedMultiplier;
+  final VoidCallback onSpeedCycle;
+  final bool isPaused;
+  final VoidCallback onPauseToggle;
+  final AsciiAnimationType? specialAnimation;
+  final bool cheatsEnabled;
+  final VoidCallback? onCheatTask;
+  final VoidCallback? onCheatQuest;
+  final VoidCallback? onCheatPlot;
+  final VoidCallback? onShowStatistics;
+  final VoidCallback? onShowHelp;
+  final VoidCallback? onShowSettings;
+
+  @override
+  Widget build(BuildContext context) {
+    return Focus(
+      autofocus: true,
+      onKeyEvent: (node, event) => _handleKeyboardShortcut(event, context),
+      child: Scaffold(
+        backgroundColor: RetroColors.deepBrown,
+        appBar: _buildAppBar(context),
+        body: _buildMainContent(),
+      ),
+    );
+  }
+
+  PreferredSizeWidget _buildAppBar(BuildContext context) {
+    return AppBar(
+      backgroundColor: RetroColors.darkBrown,
+      title: Text(
+        L10n.of(context).progressQuestTitle(state.traits.name),
+        style: const TextStyle(
+          fontFamily: 'PressStart2P',
+          fontSize: 15,
+          color: RetroColors.gold,
+        ),
+      ),
+      actions: [
+        if (cheatsEnabled) ...[
+          IconButton(
+            icon: const Text('L+1'),
+            tooltip: L10n.of(context).levelUp,
+            onPressed: onCheatTask,
+          ),
+          IconButton(
+            icon: const Text('Q!'),
+            tooltip: L10n.of(context).completeQuest,
+            onPressed: onCheatQuest,
+          ),
+          IconButton(
+            icon: const Text('P!'),
+            tooltip: L10n.of(context).completePlot,
+            onPressed: onCheatPlot,
+          ),
+        ],
+        IconButton(
+          icon: const Icon(Icons.bar_chart),
+          tooltip: game_l10n.uiStatistics,
+          onPressed: onShowStatistics,
+        ),
+        IconButton(
+          icon: const Icon(Icons.help_outline),
+          tooltip: game_l10n.uiHelp,
+          onPressed: onShowHelp,
+        ),
+        IconButton(
+          icon: const Icon(Icons.settings),
+          tooltip: game_l10n.uiSettings,
+          onPressed: onShowSettings,
+        ),
+      ],
+    );
+  }
+
+  Widget _buildMainContent() {
+    return Column(
+      children: [
+        TaskProgressPanel(
+          progress: state.progress,
+          speedMultiplier: speedMultiplier,
+          onSpeedCycle: onSpeedCycle,
+          isPaused: isPaused,
+          onPauseToggle: onPauseToggle,
+          specialAnimation: specialAnimation,
+          weaponName: state.equipment.weapon,
+          shieldName: state.equipment.shield,
+          characterLevel: state.traits.level,
+          monsterLevel: state.progress.currentTask.monsterLevel,
+          monsterGrade: state.progress.currentTask.monsterGrade,
+          monsterSize: state.progress.currentTask.monsterSize,
+          latestCombatEvent:
+              state.progress.currentCombat?.recentEvents.lastOrNull,
+          raceId: state.traits.raceId,
+        ),
+        Expanded(
+          child: Row(
+            crossAxisAlignment: CrossAxisAlignment.stretch,
+            children: [
+              Expanded(flex: 2, child: DesktopCharacterPanel(state: state)),
+              Expanded(
+                flex: 3,
+                child: DesktopEquipmentPanel(
+                  state: state,
+                  combatLogEntries: combatLogEntries,
+                ),
+              ),
+              Expanded(flex: 2, child: DesktopQuestPanel(state: state)),
+            ],
+          ),
+        ),
+      ],
+    );
+  }
+
+  /// 키보드 단축키 핸들러 (웹/데스크톱)
+  /// Space: 일시정지/재개, S: 속도 변경, H: 도움말, Esc: 설정
+  KeyEventResult _handleKeyboardShortcut(KeyEvent event, BuildContext context) {
+    if (event is! KeyDownEvent) return KeyEventResult.ignored;
+
+    final key = event.logicalKey;
+
+    if (key == LogicalKeyboardKey.space) {
+      onPauseToggle();
+      return KeyEventResult.handled;
+    }
+
+    if (key == LogicalKeyboardKey.keyS) {
+      onSpeedCycle();
+      return KeyEventResult.handled;
+    }
+
+    if (key == LogicalKeyboardKey.keyH || key == LogicalKeyboardKey.f1) {
+      onShowHelp?.call();
+      return KeyEventResult.handled;
+    }
+
+    if (key == LogicalKeyboardKey.escape) {
+      onShowSettings?.call();
+      return KeyEventResult.handled;
+    }
+
+    if (key == LogicalKeyboardKey.keyI) {
+      onShowStatistics?.call();
+      return KeyEventResult.handled;
+    }
+
+    return KeyEventResult.ignored;
+  }
+}