feat(app): seed restaurants, geocode addresses, refresh sharing

lib/data/repositories/restaurant_repository_impl.dart

@@ -95,6 +95,7 @@ class RestaurantRepositoryImpl implements RestaurantRepository {
         businessHours: restaurant.businessHours,
         lastVisited: visitDate,
         visitCount: restaurant.visitCount + 1,
+        needsAddressVerification: restaurant.needsAddressVerification,
       );
       await updateRestaurant(updatedRestaurant);
     }

lib/data/repositories/weather_repository_impl.dart

@@ -177,13 +177,19 @@ class WeatherRepositoryImpl implements WeatherRepository {
   WeatherInfo _weatherInfoFromMap(Map<String, dynamic> map) {
     try {
       // current 필드 검증
-      final currentMap = map['current'] as Map<String, dynamic>?;
+      final currentRaw = map['current'];
+      final currentMap = currentRaw is Map
+          ? Map<String, dynamic>.from(currentRaw)
+          : null;
       if (currentMap == null) {
         throw FormatException('Missing current weather data');
       }
 
       // nextHour 필드 검증
-      final nextHourMap = map['nextHour'] as Map<String, dynamic>?;
+      final nextHourRaw = map['nextHour'];
+      final nextHourMap = nextHourRaw is Map
+          ? Map<String, dynamic>.from(nextHourRaw)
+          : null;
       if (nextHourMap == null) {
         throw FormatException('Missing nextHour weather data');
       }