Add orphaned pages to sitemap and link review tool from industry pages

src/lib/content.ts

@@ -12,6 +12,9 @@ import type { BlogPost, PillarKey, AuthorProfile } from "./types";
 export const REDIRECTED_BLOG_SLUGS = new Set<string>([
     "qr-code-analytics",
     "qr-code-restaurant-menu",
+    // Duplicate of the standalone /qr-code-print-size-guide, which is the version
+    // Google actually ranks. Both were live and self-canonical until 2026-08-13.
+    "qr-code-print-size-guide",
 ]);
 
 export function isRedirectedSlug(slug: string): boolean {