stadardize site slector sector selctor

frontend/src/pages/Planner/Clusters.tsx

@@ -26,6 +26,7 @@ import { createClustersPageConfig } from '../../config/pages/clusters.config';
 import { useSectorStore } from '../../store/sectorStore';
 import { usePageSizeStore } from '../../store/pageSizeStore';
 import { getDifficultyLabelFromNumber, getDifficultyRange } from '../../utils/difficulty';
+import PageHeader from '../../components/common/PageHeader';
 
 export default function Clusters() {
   const toast = useToast();
@@ -384,6 +385,7 @@ export default function Clusters() {
 
   return (
     <>
+      <PageHeader title="Keyword Clusters" />
       <TablePageTemplate
         title="Keyword Clusters"
         titleIcon={<GroupIcon className="text-success-500 size-5" />}