perf(app): 초기화 병렬 처리 및 UI 개선

## 성능 최적화

### main.dart
- 앱 초기화 병렬 처리 (Future.wait 활용)
- 광고 SDK, Hive 초기화 동시 실행
- Hive Box 오픈 병렬 처리
- 코드 구조화 (_initializeHive, _initializeNotifications)

### visit_provider.dart
- allLastVisitDatesProvider 추가
- 리스트 화면에서 N+1 쿼리 방지
- 모든 맛집의 마지막 방문일 일괄 조회

## UI 개선

### 각 화면 리팩토링
- AppDimensions 상수 적용
- 스켈레톤 로더 적용
- 코드 정리 및 일관성 개선

lib/presentation/pages/restaurant_list/widgets/restaurant_card.dart

@@ -2,21 +2,28 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:lunchpick/core/constants/app_colors.dart';
 import 'package:lunchpick/core/constants/app_typography.dart';
+import 'package:lunchpick/core/widgets/info_row.dart';
 import 'package:lunchpick/domain/entities/restaurant.dart';
 import 'package:lunchpick/presentation/providers/restaurant_provider.dart';
-import 'package:lunchpick/presentation/providers/visit_provider.dart';
 import 'edit_restaurant_dialog.dart';
 
+/// 맛집 카드 위젯
+/// [lastVisitDate]를 외부에서 주입받아 리스트 렌더링 최적화
 class RestaurantCard extends ConsumerWidget {
   final Restaurant restaurant;
   final double? distanceKm;
+  final DateTime? lastVisitDate;
 
-  const RestaurantCard({super.key, required this.restaurant, this.distanceKm});
+  const RestaurantCard({
+    super.key,
+    required this.restaurant,
+    this.distanceKm,
+    this.lastVisitDate,
+  });
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
     final isDark = Theme.of(context).brightness == Brightness.dark;
-    final lastVisitAsync = ref.watch(lastVisitDateProvider(restaurant.id));
 
     return Card(
       margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
@@ -177,39 +184,26 @@ class RestaurantCard extends ConsumerWidget {
               ),
 
               // 마지막 방문일
-              lastVisitAsync.when(
-                data: (lastVisit) {
-                  if (lastVisit != null) {
-                    final daysSinceVisit = DateTime.now()
-                        .difference(lastVisit)
-                        .inDays;
-                    return Padding(
-                      padding: const EdgeInsets.only(top: 8),
-                      child: Row(
-                        children: [
-                          Icon(
-                            Icons.schedule,
-                            size: 16,
-                            color: isDark
-                                ? AppColors.darkTextSecondary
-                                : AppColors.lightTextSecondary,
-                          ),
-                          const SizedBox(width: 4),
-                          Text(
-                            daysSinceVisit == 0
-                                ? '오늘 방문'
-                                : '$daysSinceVisit일 전 방문',
-                            style: AppTypography.caption(isDark),
-                          ),
-                        ],
+              if (lastVisitDate != null)
+                Padding(
+                  padding: const EdgeInsets.only(top: 8),
+                  child: Row(
+                    children: [
+                      Icon(
+                        Icons.schedule,
+                        size: 16,
+                        color: isDark
+                            ? AppColors.darkTextSecondary
+                            : AppColors.lightTextSecondary,
                       ),
-                    );
-                  }
-                  return const SizedBox.shrink();
-                },
-                loading: () => const SizedBox.shrink(),
-                error: (_, __) => const SizedBox.shrink(),
-              ),
+                      const SizedBox(width: 4),
+                      Text(
+                        _formatLastVisit(lastVisitDate!),
+                        style: AppTypography.caption(isDark),
+                      ),
+                    ],
+                  ),
+                ),
             ],
           ),
         ),
@@ -240,6 +234,11 @@ class RestaurantCard extends ConsumerWidget {
     }
   }
 
+  String _formatLastVisit(DateTime date) {
+    final daysSinceVisit = DateTime.now().difference(date).inDays;
+    return daysSinceVisit == 0 ? '오늘 방문' : '$daysSinceVisit일 전 방문';
+  }
+
   void _showRestaurantDetail(BuildContext context, bool isDark) {
     showDialog(
       context: context,
@@ -252,22 +251,22 @@ class RestaurantCard extends ConsumerWidget {
           mainAxisSize: MainAxisSize.min,
           crossAxisAlignment: CrossAxisAlignment.start,
           children: [
-            _buildDetailRow(
-              '카테고리',
-              '${restaurant.category} > ${restaurant.subCategory}',
-              isDark,
+            InfoRow(
+              label: '카테고리',
+              value: '${restaurant.category} > ${restaurant.subCategory}',
+              isDark: isDark,
             ),
             if (restaurant.description != null)
-              _buildDetailRow('설명', restaurant.description!, isDark),
+              InfoRow(label: '설명', value: restaurant.description!, isDark: isDark),
             if (restaurant.phoneNumber != null)
-              _buildDetailRow('전화번호', restaurant.phoneNumber!, isDark),
-            _buildDetailRow('도로명 주소', restaurant.roadAddress, isDark),
-            _buildDetailRow('지번 주소', restaurant.jibunAddress, isDark),
+              InfoRow(label: '전화번호', value: restaurant.phoneNumber!, isDark: isDark),
+            InfoRow(label: '도로명 주소', value: restaurant.roadAddress, isDark: isDark),
+            InfoRow(label: '지번 주소', value: restaurant.jibunAddress, isDark: isDark),
             if (restaurant.lastVisitDate != null)
-              _buildDetailRow(
-                '마지막 방문',
-                '${restaurant.lastVisitDate!.year}년 ${restaurant.lastVisitDate!.month}월 ${restaurant.lastVisitDate!.day}일',
-                isDark,
+              InfoRow(
+                label: '마지막 방문',
+                value: '${restaurant.lastVisitDate!.year}년 ${restaurant.lastVisitDate!.month}월 ${restaurant.lastVisitDate!.day}일',
+                isDark: isDark,
               ),
           ],
         ),
@@ -281,20 +280,6 @@ class RestaurantCard extends ConsumerWidget {
     );
   }
 
-  Widget _buildDetailRow(String label, String value, bool isDark) {
-    return Padding(
-      padding: const EdgeInsets.symmetric(vertical: 4),
-      child: Column(
-        crossAxisAlignment: CrossAxisAlignment.start,
-        children: [
-          Text(label, style: AppTypography.caption(isDark)),
-          const SizedBox(height: 2),
-          Text(value, style: AppTypography.body2(isDark)),
-        ],
-      ),
-    );
-  }
-
   void _handleMenuAction(
     _RestaurantMenuAction action,
     BuildContext context,