fix: 修复上传版本500错误 + 优化App冷启动通知请求

- fix(admin-service): versionCode 兜底从 Date.now() 改为 1，避免超出 PostgreSQL integer 范围
- fix(genex-mobile): NotificationBadgeManager 加登录检查，未登录跳过API请求
- fix(genex-mobile): 将通知徽章初始化移至首帧后执行，消除冷启动DNS竞争

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

backend/services/admin-service/src/interface/http/controllers/admin-version.controller.ts

@@ -110,7 +110,7 @@ export class AdminVersionController {
       : (parsedInfo.platform as Platform);
     const versionCode = body.versionCode
       ? parseInt(body.versionCode, 10)
-      : parsedInfo.versionCode || Date.now();
+      : parsedInfo.versionCode || 1;
     const versionName = body.versionName || parsedInfo.versionName || '1.0.0';
     const buildNumber = body.buildNumber || versionCode.toString();
 

frontend/genex-mobile/lib/core/providers/notification_badge_manager.dart

@@ -1,5 +1,6 @@
 import 'dart:async';
 import 'package:flutter/widgets.dart';
+import '../services/auth_service.dart';
 import '../services/notification_service.dart';
 
 /// 未读通知徽章管理器
@@ -50,6 +51,7 @@ class NotificationBadgeManager with WidgetsBindingObserver {
   }
 
   Future<void> _loadUnreadCount() async {
+    if (AuthService.instance.authState.value == null) return;
     try {
       final notifCount = await _notificationService!.getUnreadCount();
       final announcementCount = await _notificationService!.getAnnouncementUnreadCount();

frontend/genex-mobile/lib/main.dart

@@ -64,9 +64,6 @@ Future<void> main() async {
   // 初始化推送服务（无 Firebase 配置时静默失败）
   await PushService().initialize();
 
-  // 初始化通知徽章管理器
-  NotificationBadgeManager().initialize();
-
   // 恢复用户语言偏好（无选择时跟随系统语言）
   await LocaleManager.init();
 
@@ -110,7 +107,7 @@ class _GenexConsumerAppState extends ConsumerState<GenexConsumerApp> {
       });
     }
 
-    // 遥测服务初始化（需 BuildContext 采集设备信息，在首帧渲染后执行）
+    // 遥测服务 + 通知徽章管理器：首帧渲染后初始化，避免冷启动 DNS 竞争
     WidgetsBinding.instance.addPostFrameCallback((_) async {
       final auth = AuthService.instance.authState.value;
       await TelemetryService().initialize(
@@ -121,6 +118,7 @@ class _GenexConsumerAppState extends ConsumerState<GenexConsumerApp> {
       if (auth != null) {
         TelemetryService().setAccessToken(auth.accessToken);
       }
+      NotificationBadgeManager().initialize();
     });
   }
 
@@ -143,6 +141,9 @@ class _GenexConsumerAppState extends ConsumerState<GenexConsumerApp> {
       // Token 双重过期：AuthService 已清空，通知 Riverpod 同步
       ref.read(authProvider.notifier).onSessionExpired();
       _navigatorKey.currentState?.pushNamedAndRemoveUntil('/', (_) => false);
+    } else if (legacyResult != null) {
+      // 登录成功后立即刷新通知徽章
+      NotificationBadgeManager().refresh();
     }
   }