perf(admin): 实现切页即时导航与列表 loading 壳

非阻塞 session 刷新、侧边栏 chunk 预取、KeepAlive 对齐，以及按 tab 延迟加载重型列表页。

apps/admin/src/views/agent/Bets.vue

@@ -1,5 +1,8 @@
 <script setup lang="ts">
-import { ref, onMounted } from 'vue';
+defineOptions({ name: 'AgentBets' });
+
+import { ref } from 'vue';
+import { useStaleListLifecycle } from '../../composables/useStaleList';
 import { useAdminLocale } from '../../composables/useAdminLocale';
 import api from '../../api';
 import { formatAmount } from '../../utils/format-amount';
@@ -22,8 +25,6 @@ const total = ref(0);
 const page = ref(1);
 const pageSize = ref(10);
 
-onMounted(load);
-
 async function load() {
   const { data } = await api.get('/agent/bets', {
     params: { page: page.value, pageSize: pageSize.value },
@@ -32,15 +33,17 @@ async function load() {
   total.value = data.data.total ?? 0;
 }
 
+const { loading, runLoad } = useStaleListLifecycle(() => bets.value.length > 0, load);
+
 function onPageChange(p: number) {
   page.value = p;
-  load();
+  void runLoad(true);
 }
 
 function onSizeChange(size: number) {
   pageSize.value = size;
   page.value = 1;
-  load();
+  void runLoad(true);
 }
 </script>
 
@@ -51,7 +54,7 @@ function onSizeChange(size: number) {
       <span class="page-desc">{{ t('page.agent_bets.desc') }}</span>
     </div>
 
-    <el-card class="data-card" shadow="never">
+    <el-card v-loading="loading" class="data-card" shadow="never">
       <div class="table-wrap">
         <el-table :data="bets" stripe>
           <el-table-column prop="id" :label="t('bet.col.serial')" width="56" align="center" />