refactor(admin): replace AdminPageTitleContext with direct registry lookup for breadcrumbs

src/features/admin/AdminPage.client.js

@@ -1,8 +1,6 @@
 'use client';
 
-import { useEffect } from 'react';
 import { getPage } from './registry.js';
-import { useAdminPageTitle } from './components/AdminPageTitleContext.js';
 import './pages/DashboardPage.client.js';
 import './pages/UsersPage.client.js';
 import './pages/RolesPage.client.js';
@@ -15,11 +13,6 @@ export default function AdminPageClient({ params, user, widgetData }) {
 
   const slug = first || 'dashboard';
   const page = getPage(slug) || getPage('dashboard');
-  const { setTitle } = useAdminPageTitle();
-
-  useEffect(() => {
-    if (page?.title) setTitle(page.title);
-  }, [page?.title]);
 
   if (!page) return null;