feat(app): finalize ad gated flows and weather

- add AppLogger and replace scattered print logging\n- implement ad-gated recommendation flow with reminder handling and calendar link\n- complete Bluetooth share pipeline with ad gate and merge\n- integrate KMA weather API with caching and dart-define decoding\n- add NaverUrlProcessor refactor and restore restaurant repository tests

lib/presentation/providers/weather_provider.dart

@@ -1,4 +1,5 @@
 import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:geolocator/geolocator.dart';
 import 'package:lunchpick/domain/entities/weather_info.dart';
 import 'package:lunchpick/domain/repositories/weather_repository.dart';
 import 'package:lunchpick/presentation/providers/di_providers.dart';
@@ -7,12 +8,17 @@ import 'package:lunchpick/presentation/providers/location_provider.dart';
 /// 현재 날씨 Provider
 final weatherProvider = FutureProvider<WeatherInfo>((ref) async {
   final repository = ref.watch(weatherRepositoryProvider);
-  final location = await ref.watch(currentLocationProvider.future);
+  Position? location;
 
-  if (location == null) {
-    throw Exception('위치 정보를 가져올 수 없습니다');
+  try {
+    location = await ref.watch(currentLocationProvider.future);
+  } catch (_) {
+    // 위치 호출 실패 시 기본 좌표 사용
+    location = defaultPosition();
   }
 
+  location ??= defaultPosition();
+
   // 캐시된 날씨 정보 확인
   final cached = await repository.getCachedWeather();
   if (cached != null) {