feat: migrate Payload CMS to MDX and harden static infrastructure

app/[locale]/layout.tsx

@@ -2,7 +2,6 @@ import Footer from '@/components/Footer';
 import Header from '@/components/Header';
 import JsonLd from '@/components/JsonLd';
 import SkipLink from '@/components/SkipLink';
-import CMSConnectivityNotice from '@/components/CMSConnectivityNotice';
 import AnalyticsShell from '@/components/analytics/AnalyticsShell';
 import { Metadata, Viewport } from 'next';
 import { NextIntlClientProvider } from 'next-intl';
@@ -144,9 +143,6 @@ export default async function Layout(props: {
             {children}
           </main>
           <Footer />
-
-          <CMSConnectivityNotice />
-
           <AnalyticsShell />
           <FeedbackClientWrapper feedbackEnabled={feedbackEnabled} />
         </NextIntlClientProvider>