minor

app.py

@@ -204,7 +204,17 @@ def main() -> None:
                 daemon=True
             ).start()
 
-            return "", "**System Status:** Visualization loaded successfully."
+            return f"""
+            <iframe 
+                src="{protocol}://{host}/viser/{request.session_hash}/" 
+                width="100%" 
+                height="500px" 
+                frameborder="0" 
+                style="display: block;"
+                allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
+                loading="lazy"
+            ></iframe>
+            """, "**System Status:** Visualization loaded successfully."
         
 
         @demo.unload