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/data/api/naver/naver_graphql_api.dart

@@ -1,5 +1,5 @@
 import 'package:dio/dio.dart';
-import 'package:flutter/foundation.dart';
+import 'package:lunchpick/core/utils/app_logger.dart';
 
 import '../../../core/network/network_client.dart';
 import '../../../core/errors/network_exceptions.dart';
@@ -46,7 +46,11 @@ class NaverGraphQLApi {
 
       return response.data!;
     } on DioException catch (e) {
-      debugPrint('fetchGraphQL error: $e');
+      AppLogger.error(
+        'fetchGraphQL error: $e',
+        error: e,
+        stackTrace: e.stackTrace,
+      );
       throw ServerException(
         message: 'GraphQL 요청 중 오류가 발생했습니다',
         statusCode: e.response?.statusCode ?? 500,
@@ -104,13 +108,17 @@ class NaverGraphQLApi {
       );
 
       if (response['errors'] != null) {
-        debugPrint('GraphQL errors: ${response['errors']}');
+        AppLogger.error('GraphQL errors: ${response['errors']}');
         throw ParseException(message: 'GraphQL 오류: ${response['errors']}');
       }
 
       return response['data']?['place'] ?? {};
-    } catch (e) {
-      debugPrint('fetchKoreanTextsFromPcmap error: $e');
+    } catch (e, stackTrace) {
+      AppLogger.error(
+        'fetchKoreanTextsFromPcmap error: $e',
+        error: e,
+        stackTrace: stackTrace,
+      );
       rethrow;
     }
   }
@@ -150,8 +158,12 @@ class NaverGraphQLApi {
       }
 
       return response['data']?['place'] ?? {};
-    } catch (e) {
-      debugPrint('fetchPlaceBasicInfo error: $e');
+    } catch (e, stackTrace) {
+      AppLogger.error(
+        'fetchPlaceBasicInfo error: $e',
+        error: e,
+        stackTrace: stackTrace,
+      );
       rethrow;
     }
   }