stopwaiting angle: squeeze page on the lander (combined overview video) + handout QR now carries ?v=stopwaiting

The stop-waiting handout QR previously hit the plain join page with no angle continuation.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

public/join.js

@@ -121,7 +121,9 @@
     two:{h:'You know two people.<br><span class="gold">That’s all this takes.</span>',
       v:'/v/rmc-two-people-4102f2d719.mp4',p:'/v/rmc-two-people-poster.jpg'},
     graveyard:{h:'This one runs on <span class="gold">teamwork</span> — not your transmission.',
-      v:'/v/rmc-graveyard-290fabee9d.mp4',p:'/v/rmc-graveyard-poster.jpg'}
+      v:'/v/rmc-graveyard-290fabee9d.mp4',p:'/v/rmc-graveyard-poster.jpg'},
+    stopwaiting:{h:'Stop <span class="gold">waiting</span>. Start <span class="gold">receiving</span>.',
+      v:'/v/rmc-combined-16284edbab.mp4',p:'/v/rmc-combined-poster.jpg'}
   };
   var a=ANGLES[new URLSearchParams(location.search).get('v')];
   if(!a)return;