feat(支付): 添加借呗余额支持并完善支付检查

在用户DTO中添加借呗余额字段，并在微信商店中处理借呗用户数据
添加支付方式可用性检查，当无可用支付方式时提示用户
在个人中心页面计算并显示借呗余额（当前注释掉）

src/common/apis/shop/type.ts

@@ -200,6 +200,8 @@ export interface ab98UserDTO {
   address?: string;
   /** 是否已注册（0未注册 1已注册） */
   registered?: boolean;
+  /** 借呗余额 单位分 */
+  ab98Balance?: number;
 }
 
 export interface OpenCabinetApiData {

src/pages/me/index.vue

@@ -11,7 +11,7 @@ const route = useRoute();
 const wxStore = useWxStore();
 const ab98UserStore = useAb98UserStore();
 
-const { balance, useBalance, balanceLimit, name: qyName } = storeToRefs(wxStore);
+const { balance, useBalance, balanceLimit, name: qyName, ab98User } = storeToRefs(wxStore);
 const { name: userName, sex: userSex, face_img } = storeToRefs(ab98UserStore);
 
 const name = computed(() => {
@@ -20,6 +20,13 @@ const name = computed(() => {
 
 const userAvatar = face_img.value ? face_img.value : `${publicPath}img/1.jpg`;
 
+const ab98BalanceInYuan = computed(() => {
+  if (ab98User.value && ab98User.value.ab98Balance !== undefined) {
+    return (ab98User.value.ab98Balance / 100).toFixed(2);
+  }
+  return '0.00';
+});
+
 const handleLogout = () => {
   showConfirmDialog({
     title: '退出登录',
@@ -77,6 +84,10 @@ wxStore.refreshBalance();
         <div class="text-sm text-gray-700">剩余借呗</div>
         <div class="text-lg font-bold text-primary">{{ balance }}</div>
       </div>
+      <!-- <div class="flex-1 ml-1">
+        <div class="text-sm text-gray-700">余额</div>
+        <div class="text-lg font-bold text-primary">{{ ab98BalanceInYuan }}</div>
+      </div> -->
     </div>
 
     <!-- 个人中心按钮 -->

src/pages/product/components/checkout.vue

@@ -121,6 +121,14 @@ async function handleSubmit() {
     }
   }
 
+  // 检查是否有可用支付方式
+  if (supportedPayments.value.length === 0) {
+    return showConfirmDialog({
+      title: "提示",
+      message: "没有支持的支付方法，请从微信进入智借还"
+    });
+  }
+
   if (!openid.value && !wxStore.isFakeQyLogin) {
     return showConfirmDialog({
       title: "登录提示",

src/pinia/stores/wx.ts

@@ -68,6 +68,10 @@ export const useWxStore = defineStore("wx", () => {
         balance.value = res.data.balance;
         useBalance.value = res.data.useBalance;
         balanceLimit.value = res.data.balanceLimit;
+        
+        if (res.data.ab98User) {
+          setAb98User(res.data.ab98User);
+        }
       }
     }
   }