feat: 添加卫星数据加载按钮，优化初始加载逻辑

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

@@ -8,14 +8,14 @@ import SatelliteSelector from './components/SatelliteSelector.vue';
 // Cesium相关
 let viewer = $ref<null | Viewer>(null);
 
-const tleList = ref([] as string[]);
+const tleList = ref([TLE_LIST[0]] as string[]);
 const spinning = ref(true);
 
 // 模拟接口获取TLE数据
 const fetchTLEData = async () => {
   spinning.value = true; // 开始加载，设置状态为true
   await new Promise((resolve) => setTimeout(resolve, 2000)); // 模拟2秒延迟
-  tleList.value = TLE_LIST; // 设置TLE数据
+  tleList.value = TLE_LIST.slice(0, 2); // 设置TLE数据
   spinning.value = false; // 加载完成，设置状态为false
 };
 
@@ -48,6 +48,17 @@ onBeforeUnmount(() => {
       v-if="spinning"
       class="z-101 absolute top-1/2 left-1/2 transform -translate-x-1/2 -translate-y-1/2"
     />
-    <SatelliteSelector class="z-100 absolute left-0 top-0 p-4" :viewer="viewer" :tle-list />
+    <SatelliteSelector class="z-100 absolute left-4 top-4" :viewer="viewer" :tle-list />
+
+    <AButton
+      @click="
+        () => {
+          tleList = TLE_LIST;
+        }
+      "
+      class="z-100 absolute left-4 top-15"
+    >
+      <template #icon> <ReloadOutlined /> </template>3 个卫星
+    </AButton>
   </div>
 </template>