Add Siemens Marketplace link to developer resources

Author: zephyrie

mayo-siemens-case-study.html

@@ -192,6 +192,15 @@ <h2 class="text-3xl font-bold text-gray-800 mb-6 relative inline-block pb-2">
                     forum.siemens-healthineers.com/#/group-feeds/syngoViaFrontierDeveloperCommunity
                   </a>
                 </li>
+                <li class="flex items-center gap-3">
+                  <svg class="w-5 h-5 text-brand-primary flex-shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13.828 10.172a4 4 0 00-5.656 0l-4 4a4 4 0 105.656 5.656l1.102-1.101m-.758-4.899a4 4 0 005.656 0l4-4a4 4 0 00-5.656-5.656l-1.1 1.1"></path>
+                  </svg>
+                  <a href="https://marketplace.teamplay.siemens-healthineers.com/app/detail/Frontier-BreastDensity" 
+                     target="_blank" rel="noopener noreferrer" class="text-brand-primary hover:text-brand-dark underline transition-colors break-all">
+                    marketplace.teamplay.siemens-healthineers.com/app/detail/Frontier-BreastDensity
+                  </a>
+                </li>
               </ul>
             </div>