feat: add CSV export to audit log

ui/src/pages/Admin/UsersTab.tsx

@@ -16,7 +16,6 @@ import {
   AlertDialog,
   SplitPane,
   EntityList,
-  Spinner,
   useToast,
 } from '@cameleer/design-system';
 import {
@@ -34,6 +33,7 @@ import {
 } from '../../api/queries/admin/rbac';
 import type { UserDetail } from '../../api/queries/admin/rbac';
 import { useAuthStore } from '../../auth/auth-store';
+import { PageLoader } from '../../components/PageLoader';
 import styles from './UserManagement.module.css';
 import sectionStyles from '../../styles/section-card.module.css';
 
@@ -200,7 +200,7 @@ export default function UsersTab({ highlightId, onHighlightConsumed }: { highlig
     return user.directGroups.map((g) => g.name).join(', ');
   }
 
-  if (isLoading) return <Spinner size="md" />;
+  if (isLoading) return <PageLoader />;
 
   return (
     <>