Update public/index.html

public/index.html

@@ -348,7 +348,7 @@
             const isAtBottom = chatWindow.scrollHeight - chatWindow.clientHeight <= chatWindow.scrollTop + 20;
 
             // Strict: Only render the last 3 messages
-            const limitedMessages = messages.slice(-5); // messages.slice(-3);
+            const limitedMessages = messages.slice(-6); // messages.slice(-3);
 
             chatWindow.innerHTML = limitedMessages.map(m => {
                 let html = '';