Add playful joke to hang.live demo description

https://claude.ai/code/session_01PwB7tG42TsWShMo2YuzD6F

Author: claude

src/components/hang.astro

@@ -5,5 +5,6 @@
 	<div>
 		Want a better demo?
 		<a href="https://hang.live" rel="noreferrer" target="_blank">hang.live</a> uses the same open-source libraries but adds more functionality on top.
+		You'll need a friend though, or at least another tab (I won't judge).
 	</div>
 </div>