feat: 订阅支付弹窗添加会员协议确认功能

- SubscriptionContentNew.tsx: 添加协议确认 Checkbox 和链接
- SubscriptionContent.js: 同步添加协议确认功能（旧版组件）
- 根据套餐类型动态显示 PRO/MAX 会员服务协议链接
- 未勾选协议时点击支付按钮显示 Toast 提示
- 切换套餐时自动重置协议勾选状态

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

src/components/Subscription/SubscriptionContent.js

@@ -32,6 +32,8 @@ import {
   Input,
   InputGroup,
   InputRightElement,
+  Checkbox,
+  Link as ChakraLink,
 } from '@chakra-ui/react';
 import React, { useState, useEffect } from 'react';
 import { logger } from '../../utils/logger';
@@ -55,6 +57,12 @@ import {
 } from 'react-icons/fa';
 import { getApiBase } from '../../utils/apiConfig';
 
+// 会员协议 URL 配置
+const AGREEMENT_URLS = {
+  pro: 'https://valuefrontier.cn/htmls/pro-member-agreement.html',
+  max: 'https://valuefrontier.cn/htmls/max-member-agreement.html',
+};
+
 export default function SubscriptionContent() {
   // Auth context
   const { user } = useAuth();
@@ -97,6 +105,9 @@ export default function SubscriptionContent() {
   const [validatingPromo, setValidatingPromo] = useState(false);
   const [priceInfo, setPriceInfo] = useState(null); // 价格信息（包含升级计算）
 
+  // 会员协议确认状态
+  const [agreementChecked, setAgreementChecked] = useState(false);
+
   // 加载订阅套餐数据
   useEffect(() => {
     fetchSubscriptionPlans();
@@ -286,6 +297,9 @@ export default function SubscriptionContent() {
 
     setSelectedPlan(plan);
 
+    // 切换套餐时重置协议勾选状态
+    setAgreementChecked(false);
+
     // 计算价格（包含升级判断）
     await calculatePrice(plan, selectedCycle, promoCodeApplied ? promoCode : null);
 
@@ -1603,11 +1617,45 @@ export default function SubscriptionContent() {
                   </Box>
                 )}
 
+                {/* 会员协议确认 */}
+                <Checkbox
+                  isChecked={agreementChecked}
+                  onChange={(e) => setAgreementChecked(e.target.checked)}
+                  colorScheme="green"
+                  size="md"
+                >
+                  <Text fontSize="sm" color={secondaryText}>
+                    我已阅读并同意
+                    <ChakraLink
+                      href={AGREEMENT_URLS[selectedPlan?.name?.toLowerCase()] || AGREEMENT_URLS.pro}
+                      isExternal
+                      color="blue.500"
+                      textDecoration="underline"
+                      mx={1}
+                      onClick={(e) => e.stopPropagation()}
+                    >
+                      《{selectedPlan?.name?.toLowerCase() === 'max' ? 'MAX' : 'PRO'}会员服务协议》
+                    </ChakraLink>
+                  </Text>
+                </Checkbox>
+
                 <Button
                   colorScheme="green"
                   size="lg"
                   leftIcon={<Icon as={FaWeixin} />}
-                  onClick={handleCreateOrder}
+                  onClick={() => {
+                    if (!agreementChecked) {
+                      toast({
+                        title: '请先阅读并同意会员服务协议',
+                        status: 'warning',
+                        duration: 3000,
+                        isClosable: true,
+                        position: 'top',
+                      });
+                      return;
+                    }
+                    handleCreateOrder();
+                  }}
                   isLoading={loading}
                   loadingText="创建订单中..."
                   isDisabled={!selectedPlan}