feat: fill contacto page gap with plated dessert photo

The two-column contact grid lost its second column when the form was
removed. Restore the layout with a real branded photo (dessert plate
with an embroidered MNQ napkin) next to the contact info instead of
leaving empty space.

src/pages/contacto.astro

@@ -128,6 +128,18 @@ const whatsappAriaLabel = 'Contactar con MNQ por WhatsApp';
 
         </aside>
 
+        <div class="contacto-plate-img overflow-hidden rounded-lg">
+          <img
+            src="/images/foto-plato-mnq.jpg"
+            alt="Postre de autor MNQ Catering servido sobre mantelería con servilleta bordada MNQ"
+            width="1200"
+            height="800"
+            style="width:100%;height:100%;object-fit:cover;object-position:center;"
+            loading="lazy"
+            decoding="async"
+          />
+        </div>
+
       </div>
     </div>
   </section>
@@ -203,7 +215,10 @@ const whatsappAriaLabel = 'Contactar con MNQ por WhatsApp';
     display: flex;
     flex-direction: column;
     gap: var(--space-8);
-    max-width: 28rem;
+  }
+
+  .contacto-plate-img {
+    aspect-ratio: 4/3;
   }
 
   .contact-link {
@@ -229,6 +244,12 @@ const whatsappAriaLabel = 'Contactar con MNQ por WhatsApp';
       gap: var(--space-12);
     }
 
+    .contacto-grid {
+      grid-template-columns: 2fr 3fr;
+      align-items: center;
+      gap: var(--space-16);
+    }
+
     .contact-detail-grid {
       grid-template-columns: 5fr 7fr;
       align-items: start;