fix:商店购买成功时，积分和数量数量显示问题修正

src/pages/shop/Shop.vue

@@ -1,3 +1,12 @@
+<!--
+ * @Descripttion: 
+ * @version: 1.0.0
+ * @Author: LyMy
+ * @Date: 2025-04-11 16:51:41
+ * @LastEditors: LyMy
+ * @LastEditTime: 2025-04-15 17:26:25
+ * @FilePath: \go_fish_web\src\pages\shop\Shop.vue
+-->
 <template>
     <div class="shop-page">
         <h1>商店 - 您当前拥有 {{ points }} 积分</h1>
@@ -54,8 +63,8 @@ const buyItem = async (good) => {
         try {
             const res = await await buy({ EquipmentId: good.id, Quantity: count })
             if (res) {
-                good.myQuantity += count
-                points.value -= count
+                good.myQuantity += Number(count)
+                points.value -= good.points * count
                 ElMessage.success("购买成功 😎")
             } else {
                 ElMessage.error(res.message + ' 😞')