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

src/app/(main)/api/csrf/route.ts

@@ -0,0 +1,14 @@
+import { NextResponse } from 'next/server';
+import { getOrCreateCsrfToken } from '@/lib/csrf';
+
+export const dynamic = 'force-dynamic';
+
+/**
+ * GET /api/csrf
+ * Returns a CSRF token for the current session
+ */
+export async function GET() {
+  const token = getOrCreateCsrfToken();
+
+  return NextResponse.json({ csrfToken: token });
+}