feat: 接入起卦后端流程并完善积分扣减链路

apps/lib/data/network/api_client.dart

@@ -44,6 +44,8 @@ class ApiClient {
   final Dio _dio;
   final Logger _logger = getLogger('data.network.api_client');
 
+  Dio get rawDio => _dio;
+
   Future<void> postNoContent(String path, {Map<String, dynamic>? data}) async {
     try {
       await _dio.post<void>(path, data: data);
@@ -90,6 +92,20 @@ class ApiClient {
     }
   }
 
+  Future<Map<String, dynamic>> getJson(String path) async {
+    try {
+      final response = await _dio.get<Map<String, dynamic>>(path);
+      return response.data ?? <String, dynamic>{};
+    } on DioException catch (error, stackTrace) {
+      _logger.error(
+        message: 'GET json failed',
+        error: error,
+        stackTrace: stackTrace,
+      );
+      throw _mapProblem(error);
+    }
+  }
+
   ApiProblem _mapProblem(DioException error) {
     final status = error.response?.statusCode ?? 500;
     final data = error.response?.data;