修复：点击标签多次请求问题，加入防抖机制

src/views/Home.vue

@@ -216,7 +216,7 @@ const props = withDefaults(
   { initialSearchExpanded: false },
 )
 
-defineOptions({ name: 'Home' })
+defineOptions({ name: 'HomePage' })
 import {
   ref,
   onMounted,
@@ -320,24 +320,6 @@ function filterVisible(nodes: CategoryTreeNode[] | undefined): CategoryTreeNode[
   return nodes.filter((n) => n.forceShow !== false && !n.forceHide)
 }
 
-/** 第三层区块标题：取当前选中的第一层节点的 sectionTitle 或 label */
-const selectedLayer0SectionTitle = computed(() => {
-  const root = filterVisible(categoryTree.value)
-  const id = layerActiveValues.value[0]
-  const node = id ? root.find((n) => n.id === id) : root[0]
-  return node?.sectionTitle ?? node?.label ?? ''
-})
-
-/** 从树中递归查找节点 */
-function findNodeById(nodes: CategoryTreeNode[], id: string): CategoryTreeNode | undefined {
-  for (const n of nodes) {
-    if (n.id === id) return n
-    const found = n.children ? findNodeById(n.children, id) : undefined
-    if (found) return found
-  }
-  return undefined
-}
-
 /** 当前选中分类的 tagIds：收集所有选中层级节点的 tagId 数组（含父级），用于事件筛选 */
 const activeTagIds = computed(() => {
   const activeIds = layerActiveValues.value
@@ -384,6 +366,14 @@ const categoryLayers = computed(() => {
 
 /** 分类选中时：若有 children 则展开下一层并默认选中第一个，并重新加载列表 */
 function onCategorySelect(layerIndex: number, selectedId: string) {
+  if (!selectedId || layerActiveValues.value[layerIndex] === selectedId) {
+    return
+  }
+
+  if (categorySelectTimer) {
+    clearTimeout(categorySelectTimer)
+  }
+
   const nextValues = [...layerActiveValues.value]
   nextValues[layerIndex] = selectedId
   nextValues.length = layerIndex + 1
@@ -401,7 +391,11 @@ function onCategorySelect(layerIndex: number, selectedId: string) {
 
   clearEventListCache()
   eventPage.value = 1
+
+  categorySelectTimer = setTimeout(() => {
+    categorySelectTimer = null
     loadEvents(1, false)
+  }, 100)
 }
 
 /** 初始化分类选中：默认选中第一个，若有 children 则递归展开 */
@@ -424,6 +418,9 @@ function initCategorySelection() {
 
 const PAGE_SIZE = 10
 
+/** 分类切换时的防抖状态，防止重复请求 */
+let categorySelectTimer: ReturnType<typeof setTimeout> | null = null
+
 /** 接口返回的列表（已映射为卡片所需结构） */
 const eventList = ref<EventCardItem[]>([])
 /** 当前页码（从 1 开始） */
@@ -613,6 +610,7 @@ async function loadEvents(page: number, append: boolean, keyword?: string) {
       pageSize: eventPageSize.value,
     })
   } catch (e) {
+    console.log(e)
     if (!append) eventList.value = []
   } finally {
     if (!append) eventListLoading.value = false