基本完成

lib/api/network/safe.dart

@@ -0,0 +1,14 @@
+import 'package:dio/dio.dart';
+
+/// 网络请求的错误处理封装
+Future<T> safeRequest<T>(
+  Future<T> request, {
+  void Function(DioException error)? onError,
+}) async {
+  try {
+    return await request;
+  } on DioException catch (e) {
+    onError?.call(e); // 额外 hook
+    rethrow; // 继续往上传
+  }
+}