优化节点加载逻辑

apps/jingrow/frontend/src/core/features/flows/components/Sidebar/NodePalette.vue

@@ -26,8 +26,6 @@ async function refreshNodeList() {
   ALL_NODE_TYPES.value = getAllNodeTypes();
 }
 
-let checkInterval = null;
-
 // 异步加载节点元数据
 onMounted(async () => {
   await refreshNodeList();
@@ -35,10 +33,6 @@ onMounted(async () => {
   // 监听节点更新事件，当新节点安装后自动刷新
   if (typeof window !== 'undefined') {
     window.addEventListener('nodeMetadataUpdated', refreshNodeList);
-    // 定期检查节点更新（每30秒，作为备用机制）
-    checkInterval = setInterval(() => {
-      refreshNodeList();
-    }, 30000);
   }
 });
 
@@ -46,9 +40,6 @@ onMounted(async () => {
 onUnmounted(() => {
   if (typeof window !== 'undefined') {
     window.removeEventListener('nodeMetadataUpdated', refreshNodeList);
-    if (checkInterval) {
-      clearInterval(checkInterval);
-    }
   }
 });