feat(ads): 네이티브 광고 적용 및 디버그 스위치 이동

lib/presentation/pages/settings/settings_screen.dart

@@ -5,6 +5,8 @@ import 'package:adaptive_theme/adaptive_theme.dart';
 import 'package:permission_handler/permission_handler.dart';
 import '../../../core/constants/app_colors.dart';
 import '../../../core/constants/app_typography.dart';
+import '../../providers/debug_share_preview_provider.dart';
+import '../../providers/debug_test_data_provider.dart';
 import '../../providers/settings_provider.dart';
 import '../../providers/notification_provider.dart';
 
@@ -24,6 +26,11 @@ class _SettingsScreenState extends ConsumerState<SettingsScreen> {
   void initState() {
     super.initState();
     _loadSettings();
+    if (kDebugMode) {
+      Future.microtask(
+        () => ref.read(debugTestDataNotifierProvider.notifier).initialize(),
+      );
+    }
   }
 
   Future<void> _loadSettings() async {
@@ -343,6 +350,7 @@ class _SettingsScreenState extends ConsumerState<SettingsScreen> {
                 ],
               ),
             ),
+            if (kDebugMode) _buildDebugToolsCard(isDark),
           ], isDark),
 
           const SizedBox(height: 24),
@@ -444,6 +452,81 @@ class _SettingsScreenState extends ConsumerState<SettingsScreen> {
     }
   }
 
+  Widget _buildDebugToolsCard(bool isDark) {
+    final sharePreviewEnabled = ref.watch(debugSharePreviewProvider);
+    final testDataState = ref.watch(debugTestDataNotifierProvider);
+    final testDataNotifier = ref.read(debugTestDataNotifierProvider.notifier);
+
+    return Card(
+      margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
+      color: isDark ? AppColors.darkSurface : AppColors.lightSurface,
+      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
+      child: Column(
+        children: [
+          ListTile(
+            leading: const Icon(
+              Icons.wifi_tethering,
+              color: AppColors.lightPrimary,
+            ),
+            title: const Text('공유 테스트 모드'),
+            subtitle: const Text('광고·권한 없이 디버그 샘플 코드/기기를 표시'),
+            trailing: Switch.adaptive(
+              value: sharePreviewEnabled,
+              onChanged: (value) {
+                ref.read(debugSharePreviewProvider.notifier).state = value;
+              },
+              activeColor: AppColors.lightPrimary,
+            ),
+          ),
+          const Divider(height: 1),
+          ListTile(
+            leading: const Icon(
+              Icons.science_outlined,
+              color: AppColors.lightPrimary,
+            ),
+            title: const Text('기록/통계 테스트 데이터'),
+            subtitle: Text(
+              testDataState.isEnabled
+                  ? '테스트 데이터가 적용되었습니다 (디버그 전용)'
+                  : '디버그 빌드에서만 사용 가능합니다.',
+            ),
+            trailing: testDataState.isProcessing
+                ? const SizedBox(
+                    width: 22,
+                    height: 22,
+                    child: CircularProgressIndicator(strokeWidth: 2),
+                  )
+                : Switch.adaptive(
+                    value: testDataState.isEnabled,
+                    onChanged: (value) async {
+                      if (value) {
+                        await testDataNotifier.enableTestData();
+                      } else {
+                        await testDataNotifier.disableTestData();
+                      }
+                    },
+                    activeColor: AppColors.lightPrimary,
+                  ),
+          ),
+          if (testDataState.errorMessage != null)
+            Padding(
+              padding: const EdgeInsets.fromLTRB(16, 0, 16, 12),
+              child: Align(
+                alignment: Alignment.centerLeft,
+                child: Text(
+                  testDataState.errorMessage!,
+                  style: AppTypography.caption(isDark).copyWith(
+                    color: AppColors.lightError,
+                    fontWeight: FontWeight.w600,
+                  ),
+                ),
+              ),
+            ),
+        ],
+      ),
+    );
+  }
+
   void _showPermissionDialog(String permissionName) {
     final isDark = Theme.of(context).brightness == Brightness.dark;