fix: 分类树显示中文标签(通过CAT_MAP映射)

frontend/src/views/KPIList.vue

@@ -447,7 +447,10 @@ async function loadCategories() {
   try {
     const r: any = await kpiApi.listCategories()
     categoryTree.value = [
-      { key: '_all', label: '全部', count: r.total, children: r.tree || [] }
+      { key: '_all', label: '全部', count: r.total, children: (r.tree || []).map((dim: any) => ({
+        ...dim,
+        children: (dim.children || []).map((cat: any) => ({ ...cat, label: CAT_MAP[cat.key] || cat.label }))
+      })) }
     ]
     defaultExpanded.value = ['_all', ...(r.tree || []).map((n: any) => n.key)]
   } catch (e) {