refactor(PointsPage): 移除内联背景样式并添加星空背景组件

 <template>
-    <div class="points-page h-screen bg-cover bg-center bg-no-repeat relative overflow-hidden flex flex-col" :style="{ backgroundImage: `url(${bgImg})` }">
+    <div class="points-page h-screen bg-cover bg-center bg-no-repeat relative overflow-hidden flex flex-col">
+        <!-- Starry Background Effect -->
+        <StarryBackground :bg-image="bgImg" />
+
         <!-- 头部积分球区域 -->
         <div class="header-bubbles relative h-48 w-full pt-6 flex-shrink-0">
             <!-- 球体 1 -->