feat(membership): 重构会员系统架构并优化VIP卡片显示

- 创建独立的会员服务模块 services/membership.ts，统一管理会员计划元数据和工具函数
- 新增 membershipSlice Redux状态管理，集中处理会员数据和状态
- 重构个人中心VIP会员卡片，支持动态显示会员计划和有效期
- 优化会员购买弹窗，使用统一的会员计划配置
- 改进会员数据获取流程，确保状态同步和一致性

contexts/MembershipModalContext.tsx

@@ -2,7 +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 { useAppDispatch, useAppSelector } from '@/hooks/redux';
+import { fetchMembershipData } from '@/store/membershipSlice';
 import { selectUserProfile } from '@/store/userSlice';
 import { logger } from '@/utils/logger';
 
@@ -18,6 +19,7 @@ interface MembershipModalContextValue {
 const MembershipModalContext = createContext<MembershipModalContextValue | null>(null);
 
 export function MembershipModalProvider({ children }: { children: React.ReactNode }) {
+  const dispatch = useAppDispatch();
   const [visible, setVisible] = useState(false);
   const [pendingSuccessCallback, setPendingSuccessCallback] = useState<(() => void) | undefined>();
   const [isInitialized, setIsInitialized] = useState(false);
@@ -46,6 +48,7 @@ export function MembershipModalProvider({ children }: { children: React.ReactNod
           await Purchases.configure(configOptions);
           setIsInitialized(true);
           logger.info('[MembershipModalProvider] RevenueCat SDK 初始化成功');
+          dispatch(fetchMembershipData());
         }
       } catch (error) {
         logger.error('[MembershipModalProvider] RevenueCat SDK 初始化失败:', error);
@@ -54,7 +57,7 @@ export function MembershipModalProvider({ children }: { children: React.ReactNod
     };
 
     initializeRevenueCat();
-  }, [isInitialized, userProfile?.id]);
+  }, [dispatch, 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(() => {
@@ -70,14 +73,17 @@ export function MembershipModalProvider({ children }: { children: React.ReactNod
             console.log('[MembershipModalProvider] 更新RevenueCat用户标识:', userProfile.id);
             await Purchases.logIn(userProfile.id);
           }
+          dispatch(fetchMembershipData());
         } catch (error) {
           console.error('[MembershipModalProvider] 更新RevenueCat用户标识失败:', error);
         }
+      } else if (isInitialized && !userProfile?.id) {
+        dispatch(fetchMembershipData());
       }
     };
 
     updateRevenueCatUser();
-  }, [userProfile?.id, isInitialized]);
+  }, [dispatch, userProfile?.id, isInitialized]);
 
   const openMembershipModal = useCallback((options?: MembershipModalOptions) => {
     setPendingSuccessCallback(() => options?.onPurchaseSuccess);