feat(app): add vworld geocoding and native ads placeholders

lib/presentation/providers/recommendation_provider.dart

@@ -122,7 +122,7 @@ class RecommendationNotifier extends StateNotifier<AsyncValue<Restaurant?>> {
     final config = RecommendationConfig(
       userLatitude: location.latitude,
       userLongitude: location.longitude,
-      maxDistance: maxDistance,
+      maxDistance: maxDistance / 1000, // 미터 입력을 km 단위로 변환
       selectedCategories: selectedCategories,
       userSettings: userSettings,
       weather: weather,
@@ -307,7 +307,7 @@ class EnhancedRecommendationNotifier
       final config = RecommendationConfig(
         userLatitude: location.latitude,
         userLongitude: location.longitude,
-        maxDistance: maxDistanceNormal.toDouble(),
+        maxDistance: maxDistanceNormal.toDouble() / 1000, // 미터 입력을 km 단위로 변환
         selectedCategories: categories,
         userSettings: userSettings,
         weather: weather,

lib/presentation/providers/visit_provider.dart

@@ -102,8 +102,8 @@ class VisitNotifier extends StateNotifier<AsyncValue<void>> {
     required DateTime recommendationTime,
     bool isConfirmed = false,
   }) async {
-    // 추천 시간으로부터 1.5시간 후를 방문 시간으로 설정
-    final visitTime = recommendationTime.add(const Duration(minutes: 90));
+    // 추천 확인 시점으로 방문 시간을 기록
+    final visitTime = DateTime.now();
 
     await addVisitRecord(
       restaurantId: restaurantId,