refactor(StarryBackground): 设置默认背景图片并移除重复代码

将背景图片URL设为StarryBackground组件的默认值
移除多个视图组件中重复的背景图片变量

@@ -23,7 +23,7 @@ const props = defineProps({
   // 背景图片 URL
   bgImage: {
     type: String,
-    default: ''
+    default: 'https://cdn.ipadbiz.cn/mlaj/recall/img/bg01@2x.png'
   },
   // 星星数量
   starCount: {

 <template>
     <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" />
+        <StarryBackground />
 
         <!-- 头部积分球区域 -->
         <div class="header-bubbles relative h-48 w-full pt-6 flex-shrink-0">
@@ -121,7 +121,6 @@ import { ref, onMounted } from 'vue'
 
 import { getPointsListAPI } from '@/api/points'
 
-const bgImg = 'https://cdn.ipadbiz.cn/mlaj/recall/img/bg01@2x.png'
 const ppImg = 'https://cdn.ipadbiz.cn/mlaj/recall/img/pp@2x.png'
 const jbImg = 'https://cdn.ipadbiz.cn/mlaj/recall/img/jb@2x.png'
 const pzImg = 'https://cdn.ipadbiz.cn/mlaj/recall/img/pz@2x.png'

 <template>
   <div class="recall-boot w-full min-h-screen relative overflow-hidden flex flex-col items-center">
     <!-- Starry Background Effect -->
-    <StarryBackground :bg-image="bgImg" />
+    <StarryBackground />
 
     <!-- Title Section -->
     <div class="mt-16 flex flex-col items-center z-10 w-full px-8">
@@ -54,7 +54,6 @@ import { useRouter, useRoute } from 'vue-router'
 import { useTitle } from '@vueuse/core'
 
 const titleImg = 'https://cdn.ipadbiz.cn/mlaj/recall/img/title02@2x.png'
-const bgImg = 'https://cdn.ipadbiz.cn/mlaj/recall/img/bg01@2x.png'
 const starImg = 'https://cdn.ipadbiz.cn/mlaj/recall/img/xing@2x.png'
 
 const router = useRouter()

 <template>
   <div class="recall-login w-full min-h-screen relative overflow-hidden flex flex-col items-center">
     <!-- Starry Background Effect -->
-    <StarryBackground :bg-image="bgImg" />
+    <StarryBackground />
 
     <!-- Title Section -->
     <div class="mt-10 flex flex-col items-center z-10 w-full px-8">
@@ -94,7 +94,6 @@ import { loginAPI, userInfoAPI } from '@/api/recall_users'
 import { useTracking } from '@/composables/useTracking'
 // 导入图片
 const titleImg = 'https://cdn.ipadbiz.cn/mlaj/recall/img/title01@2x.png'
-const bgImg = 'https://cdn.ipadbiz.cn/mlaj/recall/img/bg01@2x.png'
 
 // 路由相关
 const $route = useRoute()

 <template>
   <div class="timeline-page w-full h-screen relative overflow-hidden">
     <!-- Shared Background -->
-    <StarryBackground :bg-image="bgImg" class="absolute inset-0 z-0" />
+    <StarryBackground />
 
     <!-- Swiper -->
     <swiper :direction="'vertical'" :modules="[Mousewheel]" :mousewheel="true" :speed="800"
@@ -97,7 +97,6 @@ import 'swiper/css'
 import { userInfoAPI, searchOldActivityAPI } from '@/api/recall_users'
 
 
-const bgImg = 'https://cdn.ipadbiz.cn/mlaj/recall/img/bg01@2x.png'
 const title03 = 'https://cdn.ipadbiz.cn/mlaj/recall/img/title03@2x.png'
 const title04 = 'https://cdn.ipadbiz.cn/mlaj/recall/img/title04@2x.png'
 const arrowDown = 'https://cdn.ipadbiz.cn/mlaj/recall/img/xia@2x.png'