SEO: Fix structured data validation errors, delete static sitemap, and update indexing scripts

src/app/(main)/(app)/layout.tsx

@@ -0,0 +1,32 @@
+import type { Metadata } from 'next';
+import '@/styles/globals.css';
+import { Suspense } from 'react';
+import { Providers } from '@/components/Providers';
+import AppLayout from './AppLayout';
+
+export const metadata: Metadata = {
+    title: 'Dashboard | QR Master',
+    description: 'Manage your QR Master dashboard. Create dynamic QR codes, view real-time scan analytics, and configure your account settings in one secure place.',
+    robots: { index: false, follow: false },
+    icons: {
+        icon: [
+            { url: '/favicon.svg', type: 'image/svg+xml' },
+            { url: '/logo.svg', type: 'image/svg+xml' },
+        ],
+        apple: '/logo.svg',
+    },
+};
+
+export default function AppGroupLayout({
+    children,
+}: {
+    children: React.ReactNode;
+}) {
+    return (
+        <Suspense fallback={null}>
+            <AppLayout>
+                {children}
+            </AppLayout>
+        </Suspense>
+    );
+}