fix(mobile/telemetry): add NativeAdapter to heartbeat & uploader, fix 2xx status check

- HeartbeatService: add NativeAdapter on Android to fix DNS via Java stack;
  fix status check from == 200 to >= 200 && < 300
- TelemetryUploader: same two fixes (refactor to _buildDio static method)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/genex-mobile/lib/core/telemetry/presence/heartbeat_service.dart

@@ -1,6 +1,8 @@
 import 'dart:async';
+import 'dart:io';
 import 'package:flutter/foundation.dart';
 import 'package:dio/dio.dart';
+import 'package:native_dio_adapter/native_dio_adapter.dart';
 import '../session/session_manager.dart';
 import '../session/session_events.dart';
 import 'presence_config.dart';
@@ -81,6 +83,9 @@ class HeartbeatService {
       connectTimeout: const Duration(seconds: 5),
       receiveTimeout: const Duration(seconds: 5),
     ));
+    if (Platform.isAndroid) {
+      _dio.httpClientAdapter = NativeAdapter();
+    }
 
     // 监听会话状态变化
     final sessionManager = SessionManager();
@@ -184,7 +189,8 @@ class HeartbeatService {
         ),
       );
 
-      if (response.statusCode == 200) {
+      final code = response.statusCode ?? 0;
+      if (code >= 200 && code < 300) {
         _lastHeartbeatAt = DateTime.now();
         _heartbeatCount++;
         debugPrint('💓 [Heartbeat] Sent #$_heartbeatCount');

frontend/genex-mobile/lib/core/telemetry/uploader/telemetry_uploader.dart

@@ -1,6 +1,8 @@
 import 'dart:async';
+import 'dart:io';
 import 'package:dio/dio.dart';
 import 'package:flutter/foundation.dart';
+import 'package:native_dio_adapter/native_dio_adapter.dart';
 import '../storage/telemetry_storage.dart';
 
 /// 遥测上传器
@@ -20,11 +22,20 @@ class TelemetryUploader {
     required this.apiBaseUrl,
     required this.storage,
     this.getAuthHeaders,
-  }) : _dio = Dio(BaseOptions(
-          baseUrl: apiBaseUrl,
-          connectTimeout: const Duration(seconds: 10),
-          receiveTimeout: const Duration(seconds: 10),
-        ));
+  }) : _dio = _buildDio(apiBaseUrl);
+
+  static Dio _buildDio(String baseUrl) {
+    final dio = Dio(BaseOptions(
+      baseUrl: baseUrl,
+      connectTimeout: const Duration(seconds: 10),
+      receiveTimeout: const Duration(seconds: 10),
+    ));
+    // 与 ApiClient 保持一致：Android 上走 OkHttp，解决 Dart native socket DNS 问题
+    if (Platform.isAndroid) {
+      dio.httpClientAdapter = NativeAdapter();
+    }
+    return dio;
+  }
 
   /// 启动定时上传(每30秒或累积20条)
   void startPeriodicUpload({
@@ -75,13 +86,14 @@ class TelemetryUploader {
         ),
       );
 
-      if (response.statusCode == 200) {
-        // 上传成功,删除本地记录
+      final code = response.statusCode ?? 0;
+      if (code >= 200 && code < 300) {
+        // 上传成功（后端 POST 返回 201 Created）
         await storage.removeEvents(events.length);
         debugPrint('✅ Uploaded ${events.length} telemetry events');
         return true;
       } else {
-        debugPrint('❌ Upload failed: ${response.statusCode}');
+        debugPrint('❌ Upload failed: $code');
         return false;
       }
     } on DioException catch (e) {