Update templates/index.html

templates/index.html

@@ -126,7 +126,7 @@
 
     <div id="chat-messages" class="flex-1 overflow-y-auto p-4 md:p-8 space-y-6 scroll-smooth">
       <div id="welcome-msg" class="flex flex-col items-center justify-center h-full text-center px-4">
-        <img src="/static/icon.png" class="w-16 h-16 mb-4 shadow-sm rounded-2xl" onerror="this.style.display='none'">
+        <img src="/static/orbit.png" class="w-16 h-16 mb-4 shadow-sm rounded-2xl" onerror="this.style.display='none'">
         <h2 class="text-2xl font-bold text-gray-800 mb-2">Welcome to ORBIT</h2>
         <p class="text-gray-500 text-sm max-w-md">Your AI-powered Educational Research Assistant. Upload a document or type a prompt below to begin.</p>
       </div>