feat(ui): move users to channel list with hover volume popup, dedicate main stage to screenshares, add ws ping

public/index.html

@@ -56,11 +56,10 @@
   <main id="main">
     <div id="stage">
       <div id="screens"></div>
-      <div id="tiles"></div>
       <div id="stage-empty">
-        <div class="big-icon">&#128266;</div>
-        <h2>Pick a voice channel to join</h2>
-        <p>Peer-to-peer WebRTC voice &amp; screen sharing. Drag avatars on the spatial plane to position who you hear.</p>
+        <div class="big-icon">&#128421;&#65039;</div>
+        <h2>No active screen shares</h2>
+        <p>When someone shares their screen, it will appear here. Click the screen button below or press <b>S</b> to share.</p>
       </div>
     </div>
 
@@ -97,6 +96,6 @@
 
 <div id="toasts"></div>
 
-<script src="app.js?v=8"></script>
+<script src="app.js?v=9"></script>
 </body>
 </html>