feat(vip): 实现VIP服务权限控制和食物识别功能限制

- 添加VIP服务权限检查hook，支持免费使用次数限制
- 为食物识别功能添加登录验证和VIP权限检查
- 优化RevenueCat用户标识同步逻辑
- 修复会员购买状态检查的类型安全问题
- 为营养成分分析添加登录验证

contexts/MembershipModalContext.tsx

@@ -2,6 +2,8 @@ import React, { createContext, useCallback, useContext, useEffect, useMemo, useS
 import Purchases from 'react-native-purchases';
 
 import { MembershipModal } from '@/components/model/MembershipModal';
+import { useAppSelector } from '@/hooks/redux';
+import { selectUserProfile } from '@/store/userSlice';
 import { logger } from '@/utils/logger';
 
 type MembershipModalOptions = {
@@ -20,6 +22,9 @@ export function MembershipModalProvider({ children }: { children: React.ReactNod
   const [pendingSuccessCallback, setPendingSuccessCallback] = useState<(() => void) | undefined>();
   const [isInitialized, setIsInitialized] = useState(false);
 
+  // 获取用户信息，用于RevenueCat用户标识
+  const userProfile = useAppSelector(selectUserProfile);
+
   useEffect(() => {
     // 直接使用生产环境的 API Key，避免环境变量问题
     const iosApiKey = 'appl_lmVvuLWFlXlrEsnvxMzTnKapqcc';
@@ -28,18 +33,51 @@ export function MembershipModalProvider({ children }: { children: React.ReactNod
       try {
         // 检查是否已经配置过，避免重复配置
         if (!isInitialized) {
-          await Purchases.configure({ apiKey: iosApiKey });
+          // 如果有用户ID，在配置时传入用户标识
+          const configOptions: any = { apiKey: iosApiKey };
+
+          if (userProfile?.id) {
+            configOptions.appUserID = userProfile.id;
+            logger.info('[MembershipModalProvider] RevenueCat SDK 初始化，使用用户ID:', userProfile.id);
+          } else {
+            logger.info('[MembershipModalProvider] RevenueCat SDK 初始化，未设置用户ID');
+          }
+
+          await Purchases.configure(configOptions);
           setIsInitialized(true);
-          console.log('[MembershipModalProvider] RevenueCat SDK 初始化成功');
+          logger.info('[MembershipModalProvider] RevenueCat SDK 初始化成功');
         }
       } catch (error) {
-        console.error('[MembershipModalProvider] RevenueCat SDK 初始化失败:', error);
+        logger.error('[MembershipModalProvider] RevenueCat SDK 初始化失败:', error);
         // 初始化失败时不阻止应用正常运行
       }
     };
 
     initializeRevenueCat();
-  }, [isInitialized]);
+  }, [isInitialized, userProfile?.id]);
+
+  // 监听用户登录状态变化，在用户登录后更新RevenueCat的用户标识
+  useEffect(() => {
+    const updateRevenueCatUser = async () => {
+      if (isInitialized && userProfile?.id) {
+        try {
+          // 检查当前RevenueCat的用户标识
+          const customerInfo = await Purchases.getCustomerInfo();
+          const currentAppUserID = customerInfo.originalAppUserId;
+
+          // 如果当前用户ID与RevenueCat中的用户ID不同，则更新
+          if (currentAppUserID !== userProfile.id) {
+            console.log('[MembershipModalProvider] 更新RevenueCat用户标识:', userProfile.id);
+            await Purchases.logIn(userProfile.id);
+          }
+        } catch (error) {
+          console.error('[MembershipModalProvider] 更新RevenueCat用户标识失败:', error);
+        }
+      }
+    };
+
+    updateRevenueCatUser();
+  }, [userProfile?.id, isInitialized]);
 
   const openMembershipModal = useCallback((options?: MembershipModalOptions) => {
     setPendingSuccessCallback(() => options?.onPurchaseSuccess);