feat: add analytics summary API, dashboard page with stats grid, and blog post detail page.

src/app/(marketing)/blog/[slug]/page.tsx

@@ -2014,6 +2014,30 @@ export default function BlogPostPage({ params }: { params: { slug: string } }) {
                   <Button size="lg">Create QR Code Free</Button>
                 </Link>
               </div>
+
+              {/* Related Articles Section */}
+              <div className="mt-16">
+                <h2 className="text-2xl font-bold text-gray-900 mb-8">Related Articles</h2>
+                <div className="grid md:grid-cols-3 gap-6">
+                  {Object.values(blogPosts)
+                    .filter((p) => p.slug !== post.slug)
+                    .slice(0, 3)
+                    .map((relatedPost) => (
+                      <Link
+                        key={relatedPost.slug}
+                        href={`/blog/${relatedPost.slug}`}
+                        className="group block bg-gray-50 rounded-xl p-6 hover:bg-gray-100 transition-colors"
+                      >
+                        <Badge variant="default" className="mb-3">{relatedPost.category}</Badge>
+                        <h3 className="font-semibold text-gray-900 group-hover:text-primary-600 transition-colors mb-2 line-clamp-2">
+                          {relatedPost.title}
+                        </h3>
+                        <p className="text-sm text-gray-600 line-clamp-2">{relatedPost.excerpt}</p>
+                        <span className="text-sm text-primary-600 mt-3 inline-block">Read more →</span>
+                      </Link>
+                    ))}
+                </div>
+              </div>
             </article>
           </div>
         </div>