feat: mark offline nodes in sdwan mapping

web/index.html

@@ -144,7 +144,8 @@
           <div v-for="(n,i) in sd.nodes" :key="i" class="grid grid-cols-1 md:grid-cols-5 gap-2">
             <select class="ipt" v-model="n.node">
               <option value="">选择节点</option>
-              <option v-for="x in nodes" :key="x.name" :value="x.name">{{ x.name }}</option>
+              <option v-for="x in nodes" :key="x.name" :value="x.name">{{ (x.alias || x.name) }}（在线）</option>
+              <option v-for="x in (sd.nodes||[])" :key="'off'+x.node" v-if="x.node && !onlineMap.has(x.node)" :value="x.node">{{ x.node }}（离线）</option>
             </select>
             <input class="ipt md:col-span-2" v-model="n.ip" placeholder="10.10.0.X">
             <button class="btn2" @click="removeSDWANNode(i)">删除</button>
@@ -370,6 +371,8 @@ createApp({
       if (!k) return nodes.value;
       return nodes.value.filter(n => (n.name||'').toLowerCase().includes(k) || (n.publicIP||'').toLowerCase().includes(k));
     });
+    const onlineMap = computed(() => new Set((nodes.value || []).map(n => n.name)));
+    const nodeStatus = (name) => (name && onlineMap.value.has(name)) ? '在线' : '离线';
 
     const toast = (text, t='ok') => { msg.value = text; msgType.value = t; setTimeout(() => { if (msg.value === text) msg.value = ''; }, 2500); };
     const bearer = () => ({ Authorization: 'Bearer ' + (localStorage.getItem('t') || '') });
@@ -668,6 +671,7 @@ createApp({
       health, stats, nodes, nodeKeyword, filteredNodes, sd, connectForm,
       tenants, activeTenant, keys, users, enrolls, tenantForm, keyForm, userForm,
       settings, audit, auditTenant,
+      onlineMap, nodeStatus,
       natText, uptime, fmtTime,
       login, logout, refreshAll, saveSDWAN, addSDWANNode, removeSDWANNode, addSubnetProxy, removeSubnetProxy, autoAssignIPs,
       kickNode, renameNode, changeNodeIP, openAppManager, pushAppConfigs, openConnect, doConnect,