refactor: remove unused page hero components

app/pages/sites.vue

@@ -5,14 +5,7 @@
       :visible="previewVisible"
       @close="closePreview"
     />
-    <!-- Hero Section -->
-    <PageHero
-      title="Gestion des Sites"
-      subtitle="Gérez vos sites industriels et leurs emplacements."
-      min-height="min-h-[24vh]"
-      max-width="max-w-md"
-    />
-
+  
     <!-- Sites Management -->
     <div class="my-8">
       <!-- Header with Add Button -->
@@ -378,7 +371,6 @@ import { getFileIcon } from '~/utils/fileIcons'
 import { canPreviewDocument } from '~/utils/documentPreview'
 import DocumentUpload from '~/components/DocumentUpload.vue'
 import DocumentPreviewModal from '~/components/DocumentPreviewModal.vue'
-import PageHero from '~/components/PageHero.vue'
 
 const { sites, loading, loadSites, createSite, updateSite, deleteSite } = useSites()
 const { uploadDocuments, deleteDocument, loadDocumentsBySite } = useDocuments()