feat: 优化卫星选择器标题显示，增强用户交互体验

src/pages/Satellite/Cesium/index.page.vue

@@ -131,20 +131,19 @@ const onCheckAllChange = (e: { target: { checked: boolean } }) => {
 <template>
   <div id="cesiumContainer" class="z-0">
     <div class="absolute top-0 left-0 p-4 z-10">
-      <APopover placement="bottomLeft" title="选择卫星" trigger="click" :overlayStyle="{ width: '320px' }">
+      <APopover placement="bottomLeft" trigger="click" :overlayStyle="{ width: '320px' }">
+        <template #title>
+          选择卫星
+          <span class="font-normal text-xs text-gray-500">{{ `(已选择: ${selectedCount}/${totalCount})` }}</span>
+        </template>
         <template #content>
           <div class="satellite-selector">
             <!-- 搜索框 -->
-            <AInput class="mb-3" v-model:value="state.searchText" placeholder="搜索卫星" allowClear>
+            <AInput v-model:value="state.searchText" placeholder="搜索卫星" allowClear>
               <template #prefix><SearchOutlined /></template>
             </AInput>
 
-            <!-- 选择状态信息 -->
-            <div class="flex justify-between items-center mb-2">
-              <span class="text-xs text-gray-500">已选择: {{ selectedCount }}/{{ totalCount }}</span>
-            </div>
-
-            <ADivider style="margin: 8px 0" />
+            <ADivider class="my-3" />
 
             <!-- 无结果提示 -->
             <div v-if="filteredSatellites.length === 0" class="text-center text-gray-500 py-4">没有找到匹配的卫星</div>