更新依赖项版本，优化后台任务管理器，添加后台任务自动启动功能，调整后台获取配置，移除冗余代码

services/backgroundTaskManager.ts

@@ -38,7 +38,7 @@ export class BackgroundTaskManager {
     try {
       // 配置后台获取
       const status = await BackgroundFetch.configure({
-        minimumFetchInterval: 15, // 最小间隔15分钟（iOS 实际控制间隔）
+        minimumFetchInterval: 15, // 最小间隔15分钟（单位：秒）
       }, async (taskId) => {
         console.log('[BackgroundFetch] 后台任务执行:', taskId);
         await this.executeBackgroundTasks();
@@ -53,6 +53,10 @@ export class BackgroundTaskManager {
       this.isInitialized = true;
       console.log('后台任务管理器初始化完成');
 
+      // 初始化完成后自动启动后台任务
+      await this.start();
+      console.log('后台任务已自动启动');
+
     } catch (error) {
       console.error('初始化后台任务管理器失败:', error);
       throw error;
@@ -214,6 +218,11 @@ export class BackgroundTaskManager {
    */
   async start(): Promise<void> {
     try {
+      BackgroundFetch.scheduleTask({
+        taskId: 'com.anonymous.digitalpilates.backgroundfetch',
+        delay: 15 * 60 * 1000
+      });
+
       await BackgroundFetch.start();
       console.log('后台任务已启动');
     } catch (error) {
@@ -410,31 +419,3 @@ export interface BackgroundTaskEvent {
   success: boolean;
   error?: string;
 }
-
-/**
- * 后台任务配置选项
- */
-export interface BackgroundTaskConfig {
-  minimumFetchInterval?: number;
-  stopOnTerminate?: boolean;
-  startOnBoot?: boolean;
-  enableHeadless?: boolean;
-  requiredNetworkType?: 'NONE' | 'ANY' | 'CELLULAR' | 'WIFI';
-  requiresCharging?: boolean;
-  requiresDeviceIdle?: boolean;
-  requiresBatteryNotLow?: boolean;
-}
-
-/**
- * 默认后台任务配置
- */
-export const DEFAULT_BACKGROUND_TASK_CONFIG: BackgroundTaskConfig = {
-  minimumFetchInterval: 15000, // 15分钟
-  stopOnTerminate: false,
-  startOnBoot: true,
-  enableHeadless: true,
-  requiredNetworkType: 'ANY',
-  requiresCharging: false,
-  requiresDeviceIdle: false,
-  requiresBatteryNotLow: false,
-};