번호 자동 부여 대응 및 API 공통 처리 보강

test/features/masters/customer/data/customer_repository_remote_test.dart

@@ -14,11 +14,28 @@ void main() {
   setUpAll(() {
     registerFallbackValue(Options());
     registerFallbackValue(CancelToken());
+    registerFallbackValue(
+      Response<dynamic>(requestOptions: RequestOptions(path: '/')),
+    );
   });
 
   setUp(() {
     apiClient = _MockApiClient();
     repository = CustomerRepositoryRemote(apiClient: apiClient);
+    when(() => apiClient.unwrapAsMap(any())).thenAnswer((invocation) {
+      final response = invocation.positionalArguments.first;
+      if (response is Response) {
+        final data = response.data;
+        if (data is Map<String, dynamic>) {
+          final nested = data['data'];
+          if (nested is Map<String, dynamic>) {
+            return nested;
+          }
+          return data;
+        }
+      }
+      return <String, dynamic>{};
+    });
   });
 
   test('list 호출 시 필터를 쿼리에 포함한다', () async {