feat(admin): sync page title to admin shell via context

src/features/admin/AdminPage.server.js

@@ -2,7 +2,7 @@ import AdminShell from './components/AdminShell.js';
 import AdminPageClient from './AdminPage.client.js';
 import { protectAdmin } from './protect.js';
 import { buildNavigationSections } from './navigation.js';
-import { collectWidgetData, getPage } from './registry.js';
+import { collectWidgetData } from './registry.js';
 import { logoutAction } from '@zen/core/features/auth/actions';
 import { getAppName } from '@zen/core';
 import './widgets/index.server.js';
@@ -14,8 +14,6 @@ export default async function AdminPage({ params }) {
 
   const widgetData = await collectWidgetData();
   const navigationSections = buildNavigationSections('/');
-  const slug = resolvedParams?.admin?.[0] || 'dashboard';
-  const currentPageTitle = getPage(slug)?.title;
 
   return (
     <AdminShell
@@ -23,7 +21,6 @@ export default async function AdminPage({ params }) {
       onLogout={logoutAction}
       appName={appName}
       navigationSections={navigationSections}
-      currentPageTitle={currentPageTitle}
     >
       <AdminPageClient
         params={resolvedParams}