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)/use-cases/[slug]/page.tsx

@@ -0,0 +1,78 @@
+import { notFound } from "next/navigation";
+
+import {
+  buildUseCaseMetadata,
+  UseCasePageTemplate,
+} from "@/components/marketing/UseCasePageTemplate";
+import {
+  featuredUseCases,
+  getUseCasePage,
+} from "@/lib/growth-pages";
+
+export function generateStaticParams() {
+  return featuredUseCases.map((item) => ({
+    slug: item.slug,
+  }));
+}
+
+export function generateMetadata({ params }: { params: { slug: string } }) {
+  const page = getUseCasePage(params.slug);
+
+  if (!page) {
+    return {};
+  }
+
+  return buildUseCaseMetadata({
+    title: page.title,
+    description: page.metaDescription,
+    canonicalPath: page.href,
+  });
+}
+
+export default function UseCaseDetailPage({
+  params,
+}: {
+  params: { slug: string };
+}) {
+  const page = getUseCasePage(params.slug);
+
+  if (!page) {
+    notFound();
+  }
+
+  return (
+    <UseCasePageTemplate
+      title={page.title}
+      description={page.metaDescription}
+      eyebrow={page.eyebrow}
+      intro={page.intro}
+      pageType="use_case"
+      cluster={page.cluster}
+      useCase={page.slug}
+      breadcrumbs={[
+        { name: "Home", url: "/" },
+        { name: "Use Cases", url: "/use-cases" },
+        { name: page.title, url: page.href },
+      ]}
+      answer={page.answer}
+      whenToUse={page.whenToUse}
+      comparisonItems={page.comparisonItems}
+      howToSteps={page.howToSteps}
+      primaryCta={{
+        href: page.parentHref,
+        label: page.ctaLabel,
+      }}
+      secondaryCta={{
+        href: "/use-cases",
+        label: "Explore more use cases",
+      }}
+      workflowTitle={page.workflowTitle}
+      workflowIntro={page.workflowIntro}
+      workflowCards={page.workflowCards}
+      checklistTitle={page.checklistTitle}
+      checklist={page.checklist}
+      supportLinks={page.supportLinks}
+      faq={page.faq}
+    />
+  );
+}