Add AiDevCon London to presentations index

index.html

@@ -158,6 +158,15 @@
     <section>
       <h2>2026</h2>
       <ul class="conference-list">
+        <li class="conference">
+          <p class="conference-title">AiDevCon London <span class="tag">2026</span></p>
+          <div class="links">
+            <a href="2026/aidevcon-london/">View presentation</a>
+          </div>
+          <div class="extras">
+            <p class="note">Slidev deck on MCP, agents, and Hugging Face.</p>
+          </div>
+        </li>
         <li class="conference">
           <p class="conference-title">MCP Connect Paris (February) <span class="tag">Feb 2026</span></p>
           <div class="links">