fix：对齐金值的报名验证，商城入口逻辑对齐

lib/features/auth/data/auth_api.dart

@@ -1,4 +1,5 @@
 import 'dart:convert';
+import 'dart:typed_data';
 
 import 'package:dio/dio.dart';
 
@@ -16,7 +17,9 @@ class AuthApi {
   Future<int> sendSmsCode(String phone) async {
     final response = await _dio.post<List<int>>(
       '/api/v1/auth/sms/send',
-      data: _ProtoWriter.stringField(1, phone),
+      // Dio may JSON-encode a List<int> as `[10,11,...]`. The API expects
+      // the raw protobuf bytes, so preserve the binary payload explicitly.
+      data: Uint8List.fromList(_ProtoWriter.stringField(1, phone)),
       options: protobufOptions(),
     );
     return _ProtoMessage(response.data ?? const <int>[]).integer(1);
@@ -25,10 +28,10 @@ class AuthApi {
   Future<AuthLoginResult> verifySmsCode(String phone, String code) async {
     final response = await _dio.post<List<int>>(
       '/api/v1/auth/sms/verify',
-      data: [
+      data: Uint8List.fromList([
         ..._ProtoWriter.stringField(1, phone),
         ..._ProtoWriter.stringField(2, code),
-      ],
+      ]),
       options: protobufOptions(),
     );
     final reply = _ProtoMessage(response.data ?? const <int>[]);