feat(ui): 게임 화면 및 UI 컴포넌트 개선

- front_screen: 프론트 화면 UI 업데이트
- game_play_screen: 게임 플레이 화면 수정
- game_session_controller: 세션 관리 로직 개선
- mobile_carousel_layout: 모바일 캐러셀 레이아웃 개선
- enhanced_animation_panel: 애니메이션 패널 업데이트
- help_dialog: 도움말 다이얼로그 수정
- return_rewards_dialog: 복귀 보상 다이얼로그 개선
- new_character_screen: 새 캐릭터 화면 수정
- settings_screen: 설정 화면 업데이트

lib/src/features/game/game_play_screen.dart

@@ -7,7 +7,7 @@ import 'package:flutter/services.dart' show KeyDownEvent, LogicalKeyboardKey;
 import 'package:asciineverdie/data/game_text_l10n.dart' as game_l10n;
 import 'package:asciineverdie/data/skill_data.dart';
 import 'package:asciineverdie/src/core/engine/iap_service.dart';
-import 'package:asciineverdie/src/core/engine/return_rewards_service.dart';
+import 'package:asciineverdie/src/core/model/treasure_chest.dart';
 import 'package:asciineverdie/data/story_data.dart';
 import 'package:asciineverdie/l10n/app_localizations.dart';
 import 'package:asciineverdie/src/core/animation/ascii_animation_type.dart';
@@ -51,8 +51,6 @@ class GamePlayScreen extends StatefulWidget {
     this.audioService,
     this.forceCarouselLayout = false,
     this.forceDesktopLayout = false,
-    this.onThemeModeChange,
-    this.currentThemeMode = ThemeMode.system,
   });
 
   final GameSessionController controller;
@@ -66,12 +64,6 @@ class GamePlayScreen extends StatefulWidget {
   /// 테스트 모드: 모바일에서도 데스크톱 3패널 레이아웃 강제 사용
   final bool forceDesktopLayout;
 
-  /// 테마 모드 변경 콜백
-  final void Function(ThemeMode mode)? onThemeModeChange;
-
-  /// 현재 테마 모드
-  final ThemeMode currentThemeMode;
-
   @override
   State<GamePlayScreen> createState() => _GamePlayScreenState();
 }
@@ -316,8 +308,6 @@ class _GamePlayScreenState extends State<GamePlayScreen>
         builder: (_) => GamePlayScreen(
           controller: widget.controller,
           audioService: widget.audioService,
-          currentThemeMode: widget.currentThemeMode,
-          onThemeModeChange: widget.onThemeModeChange,
         ),
       ),
     );
@@ -407,15 +397,19 @@ class _GamePlayScreenState extends State<GamePlayScreen>
   }
 
   /// 복귀 보상 다이얼로그 표시 (Phase 7)
-  void _showReturnRewardsDialog(ReturnReward reward) {
+  void _showReturnRewardsDialog(ReturnChestReward reward) {
     // 잠시 후 다이얼로그 표시 (게임 시작 후)
     WidgetsBinding.instance.addPostFrameCallback((_) {
       if (!mounted) return;
+      final state = widget.controller.state;
+      if (state == null) return;
+
       ReturnRewardsDialog.show(
         context,
         reward: reward,
-        onClaim: (totalGold) {
-          widget.controller.applyReturnReward(totalGold);
+        playerLevel: state.traits.level,
+        onClaim: (rewards) {
+          widget.controller.applyReturnReward(rewards);
         },
       );
     });
@@ -436,10 +430,6 @@ class _GamePlayScreenState extends State<GamePlayScreen>
     SettingsScreen.show(
       context,
       settingsRepository: settingsRepo,
-      currentThemeMode: widget.currentThemeMode,
-      onThemeModeChange: (mode) {
-        widget.onThemeModeChange?.call(mode);
-      },
       onLocaleChange: (locale) async {
         // 안전한 언어 변경: 전체 화면 재생성
         final navigator = Navigator.of(this.context);
@@ -452,8 +442,6 @@ class _GamePlayScreenState extends State<GamePlayScreen>
               builder: (_) => GamePlayScreen(
                 controller: widget.controller,
                 audioService: widget.audioService,
-                currentThemeMode: widget.currentThemeMode,
-                onThemeModeChange: widget.onThemeModeChange,
               ),
             ),
           );
@@ -586,6 +574,10 @@ class _GamePlayScreenState extends State<GamePlayScreen>
                   widget.controller.loop?.cycleSpeed();
                   setState(() {});
                 },
+                onSetSpeed: (speed) {
+                  widget.controller.loop?.setSpeed(speed);
+                  setState(() {});
+                },
                 // 특수 애니메이션 중에는 일시정지 상태로 표시하지 않음
                 isPaused:
                     !widget.controller.isRunning && _specialAnimation == null,
@@ -620,8 +612,6 @@ class _GamePlayScreenState extends State<GamePlayScreen>
                         builder: (_) => GamePlayScreen(
                           controller: widget.controller,
                           audioService: widget.audioService,
-                          currentThemeMode: widget.currentThemeMode,
-                          onThemeModeChange: widget.onThemeModeChange,
                         ),
                       ),
                     );
@@ -637,8 +627,6 @@ class _GamePlayScreenState extends State<GamePlayScreen>
                     Navigator.of(context).pop();
                   }
                 },
-                currentThemeMode: widget.currentThemeMode,
-                onThemeModeChange: widget.onThemeModeChange,
                 // 사운드 설정
                 bgmVolume: _audioController.bgmVolume,
                 sfxVolume: _audioController.sfxVolume,
@@ -666,11 +654,13 @@ class _GamePlayScreenState extends State<GamePlayScreen>
                     navigator.popUntil((route) => route.isFirst);
                   }
                 },
-                // 수익화 버프 (자동부활, 5배속)
+                // 수익화 버프 (자동부활, 광고배속)
                 autoReviveEndMs: widget.controller.monetization.autoReviveEndMs,
                 speedBoostEndMs: widget.controller.monetization.speedBoostEndMs,
                 isPaidUser: widget.controller.monetization.isPaidUser,
                 onSpeedBoostActivate: _handleSpeedBoost,
+                adSpeedMultiplier: widget.controller.adSpeedMultiplier,
+                has2xUnlocked: widget.controller.has2xUnlocked,
               ),
               // 사망 오버레이
               if (state.isDead && state.deathInfo != null)