refactor(init): 优化应用初始化流程，将权限请求延迟到引导完成后

- 将服务初始化拆分为基础服务和权限相关服务两个阶段
- 基础服务（用户数据、HealthKit初始化、快捷动作等）在应用启动时立即执行
- 权限相关服务（通知、HealthKit权限请求）仅在用户完成引导流程后才执行
- 在Redux store中添加onboardingCompleted状态管理
- 引导页面完成时通过Redux更新状态而非直接操作AsyncStorage
- 启动页面从预加载数据中读取引导完成状态，避免重复读取存储
- 使用ref防止权限服务重复初始化

app/onboarding.tsx

@@ -22,10 +22,8 @@ import { SafeAreaView } from 'react-native-safe-area-context';
 
 import { palette } from '@/constants/Colors';
 import { ROUTES } from '@/constants/Routes';
-import { STORAGE_KEYS } from '@/services/api';
-import AsyncStorage from '@/utils/kvStore';
-
-const ONBOARDING_COMPLETED_KEY = STORAGE_KEYS.onboardingCompleted;
+import { useAppDispatch } from '@/hooks/redux';
+import { setOnboardingCompleted } from '@/store/userSlice';
 
 type OnboardingSlide = {
   key: string;
@@ -63,6 +61,7 @@ const SLIDES: OnboardingSlide[] = [
 
 export default function OnboardingScreen() {
   const router = useRouter();
+  const dispatch = useAppDispatch();
   const { width } = useWindowDimensions();
   const [currentIndex, setCurrentIndex] = useState(0);
   const listRef = useRef<FlatList<OnboardingSlide>>(null);
@@ -92,9 +91,10 @@ export default function OnboardingScreen() {
   );
 
   const completeOnboarding = useCallback(async () => {
-    await AsyncStorage.setItem(ONBOARDING_COMPLETED_KEY, 'true');
+    // 通过 Redux 更新 onboarding 状态（会自动保存到 AsyncStorage）
+    await dispatch(setOnboardingCompleted());
     router.replace(ROUTES.TAB_STATISTICS);
-  }, [router]);
+  }, [dispatch, router]);
 
   const handleSkip = useCallback(() => {
     completeOnboarding();