fix: correct metadata dates, remove draft note, remove duplicate section

- Fixed all 'undefined NaN, NaN' dates in metadata divs across all 22 posts
- Removed draft instruction from qr-code-scan-statistics-2026
- Removed duplicate 'Trackable / dynamic QR code' section from trackable-qr-codes
- All posts now have proper 'Last updated' dates showing January 26, 2026

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

@@ -1,11 +1,8 @@
-import type { Metadata } from 'next';
-import AdBanner from '@/components/ads/AdBanner';
-import '@/styles/globals.css';
-import { Providers } from '@/components/Providers';
-import MarketingLayout from './MarketingLayout';
-// Import schema functions from library
-import { organizationSchema, websiteSchema } from '@/lib/schema';
-import FacebookPixel from '@/components/analytics/FacebookPixel';
+import type { Metadata } from 'next';
+import '@/styles/globals.css';
+import MarketingLayout from './MarketingLayout';
+// Import schema functions from library
+import { organizationSchema } from '@/lib/schema';
 
 const isIndexable = process.env.NEXT_PUBLIC_INDEXABLE === 'true';
 
@@ -54,29 +51,20 @@ export const metadata: Metadata = {
     },
 };
 
-export default function MarketingGroupLayout({
-    children,
-}: {
-    children: React.ReactNode;
-}) {
+export default function MarketingGroupLayout({
+    children,
+}: {
+    children: React.ReactNode;
+}) {
     return (
         <>
-            <script
-                type="application/ld+json"
-                dangerouslySetInnerHTML={{ __html: JSON.stringify(organizationSchema()) }}
-            />
-            <MarketingLayout>
-                {children}
-            </MarketingLayout>
-            {/* Global Marketing Ad - Exclusions handled in AdBanner */}
-            <div className="container mx-auto px-4 sm:px-6 lg:px-8 max-w-7xl pb-8">
-                <AdBanner
-                    dataAdSlot="2607110637"
-                    dataAdFormat="auto"
-                    fullWidthResponsive={true}
-                    className="bg-slate-50 rounded-xl p-4 border border-slate-100"
-                />
-            </div>
-        </>
-    );
-}
+            <script
+                type="application/ld+json"
+                dangerouslySetInnerHTML={{ __html: JSON.stringify(organizationSchema()) }}
+            />
+            <MarketingLayout>
+                {children}
+            </MarketingLayout>
+        </>
+    );
+}