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/calendar/calendar_screen.dart

@@ -3,6 +3,7 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:table_calendar/table_calendar.dart';
 import '../../../core/constants/app_colors.dart';
 import '../../../core/constants/app_typography.dart';
+import '../../../core/widgets/info_row.dart';
 import '../../../domain/entities/restaurant.dart';
 import '../../../domain/entities/recommendation_record.dart';
 import '../../../domain/entities/visit_record.dart';
@@ -607,18 +608,25 @@ class _CalendarScreenState extends ConsumerState<CalendarScreen>
                         ),
                       ),
                       const SizedBox(height: 12),
-                      _buildInfoRow('주소', restaurant.roadAddress, isDark),
+                      InfoRow(
+                        label: '주소',
+                        value: restaurant.roadAddress,
+                        isDark: isDark,
+                        horizontal: true,
+                      ),
                       if (visitTime != null)
-                        _buildInfoRow(
-                          isVisitConfirmed ? '방문 완료' : '방문 예정',
-                          _formatFullDateTime(visitTime),
-                          isDark,
+                        InfoRow(
+                          label: isVisitConfirmed ? '방문 완료' : '방문 예정',
+                          value: _formatFullDateTime(visitTime),
+                          isDark: isDark,
+                          horizontal: true,
                         ),
                       if (recoTime != null)
-                        _buildInfoRow(
-                          '추천 시각',
-                          _formatFullDateTime(recoTime),
-                          isDark,
+                        InfoRow(
+                          label: '추천 시각',
+                          value: _formatFullDateTime(recoTime),
+                          isDark: isDark,
+                          horizontal: true,
                         ),
                       const SizedBox(height: 12),
                       Wrap(
@@ -703,23 +711,6 @@ class _CalendarScreenState extends ConsumerState<CalendarScreen>
     );
   }
 
-  Widget _buildInfoRow(String label, String value, bool isDark) {
-    return Padding(
-      padding: const EdgeInsets.symmetric(vertical: 4),
-      child: Row(
-        crossAxisAlignment: CrossAxisAlignment.start,
-        children: [
-          SizedBox(
-            width: 80,
-            child: Text(label, style: AppTypography.caption(isDark)),
-          ),
-          const SizedBox(width: 8),
-          Expanded(child: Text(value, style: AppTypography.body2(isDark))),
-        ],
-      ),
-    );
-  }
-
   Future<void> _showRestaurantDetailDialog(
     BuildContext context,
     bool isDark,
@@ -737,18 +728,39 @@ class _CalendarScreenState extends ConsumerState<CalendarScreen>
             mainAxisSize: MainAxisSize.min,
             crossAxisAlignment: CrossAxisAlignment.start,
             children: [
-              _buildInfoRow(
-                '카테고리',
-                '${restaurant.category} > ${restaurant.subCategory}',
-                isDark,
+              InfoRow(
+                label: '카테고리',
+                value: '${restaurant.category} > ${restaurant.subCategory}',
+                isDark: isDark,
+                horizontal: true,
               ),
               if (restaurant.phoneNumber != null)
-                _buildInfoRow('전화번호', restaurant.phoneNumber!, isDark),
-              _buildInfoRow('도로명', restaurant.roadAddress, isDark),
-              _buildInfoRow('지번', restaurant.jibunAddress, isDark),
+                InfoRow(
+                  label: '전화번호',
+                  value: restaurant.phoneNumber!,
+                  isDark: isDark,
+                  horizontal: true,
+                ),
+              InfoRow(
+                label: '도로명',
+                value: restaurant.roadAddress,
+                isDark: isDark,
+                horizontal: true,
+              ),
+              InfoRow(
+                label: '지번',
+                value: restaurant.jibunAddress,
+                isDark: isDark,
+                horizontal: true,
+              ),
               if (restaurant.description != null &&
                   restaurant.description!.isNotEmpty)
-                _buildInfoRow('메모', restaurant.description!, isDark),
+                InfoRow(
+                  label: '메모',
+                  value: restaurant.description!,
+                  isDark: isDark,
+                  horizontal: true,
+                ),
             ],
           ),
         ),