feat: 알림 재예약 개선과 패키지 업그레이드

lib/screens/add_subscription_screen.dart

@@ -9,7 +9,7 @@ import '../widgets/add_subscription/add_subscription_save_button.dart';
 
 /// 새로운 구독을 추가하는 화면
 class AddSubscriptionScreen extends StatefulWidget {
-  const AddSubscriptionScreen({Key? key}) : super(key: key);
+  const AddSubscriptionScreen({super.key});
 
   @override
   State<AddSubscriptionScreen> createState() => _AddSubscriptionScreenState();

lib/screens/settings_screen.dart

@@ -1,5 +1,5 @@
 import 'package:flutter/material.dart';
-import 'package:flutter/foundation.dart' show kIsWeb;
+import 'package:flutter/foundation.dart' show kIsWeb, kDebugMode;
 import 'package:provider/provider.dart';
 import '../providers/notification_provider.dart';
 import 'dart:io';
@@ -694,6 +694,25 @@ class SettingsScreen extends StatelessWidget {
                                                     ),
                                                   ),
                                                 ),
+                                              if (kDebugMode)
+                                                Padding(
+                                                  padding:
+                                                      const EdgeInsets.only(
+                                                          top: 16.0),
+                                                  child: SizedBox(
+                                                    width: double.infinity,
+                                                    child: OutlinedButton.icon(
+                                                      icon: const Icon(Icons
+                                                          .notifications_active),
+                                                      label:
+                                                          const Text('테스트 알림'),
+                                                      onPressed: () {
+                                                        NotificationService
+                                                            .showTestPaymentNotification();
+                                                      },
+                                                    ),
+                                                  ),
+                                                ),
                                             ],
                                           ),
                                         ),

lib/screens/sms_scan_screen.dart

@@ -16,18 +16,21 @@ class SmsScanScreen extends StatefulWidget {
 
 class _SmsScanScreenState extends State<SmsScanScreen> {
   late SmsScanController _controller;
+  late final ScrollController _scrollController;
 
   @override
   void initState() {
     super.initState();
     _controller = SmsScanController();
     _controller.addListener(_handleControllerUpdate);
+    _scrollController = ScrollController();
   }
 
   @override
   void dispose() {
     _controller.removeListener(_handleControllerUpdate);
     _controller.dispose();
+    _scrollController.dispose();
     super.dispose();
   }
 
@@ -93,16 +96,37 @@ class _SmsScanScreenState extends State<SmsScanScreen> {
           websiteUrlController: _controller.websiteUrlController,
           selectedCategoryId: _controller.selectedCategoryId,
           onCategoryChanged: _controller.setSelectedCategoryId,
-          onAdd: () => _controller.addCurrentSubscription(context),
-          onSkip: () => _controller.skipCurrentSubscription(context),
+          onAdd: _handleAddSubscription,
+          onSkip: _handleSkipSubscription,
         ),
       ],
     );
   }
 
+  Future<void> _handleAddSubscription() async {
+    await _controller.addCurrentSubscription(context);
+    if (!mounted) return;
+    WidgetsBinding.instance.addPostFrameCallback((_) => _scrollToTop());
+  }
+
+  void _handleSkipSubscription() {
+    _controller.skipCurrentSubscription(context);
+    WidgetsBinding.instance.addPostFrameCallback((_) => _scrollToTop());
+  }
+
+  void _scrollToTop() {
+    if (!_scrollController.hasClients) return;
+    _scrollController.animateTo(
+      0,
+      duration: const Duration(milliseconds: 300),
+      curve: Curves.easeOut,
+    );
+  }
+
   @override
   Widget build(BuildContext context) {
     return SingleChildScrollView(
+      controller: _scrollController,
       padding: EdgeInsets.zero,
       child: Column(
         children: [

lib/screens/splash_screen.dart

@@ -186,7 +186,7 @@ class _SplashScreenState extends State<SplashScreen>
                     ),
                   ),
                 );
-              }).toList(),
+              }),
 
               // 상단 원형 장식 제거(단색 배경 유지)
               Positioned(