feat(webrtc): render remote audio tracks and allow camera access

web/src/components/VoicePanel.tsx

@@ -2,6 +2,7 @@ import { useVoiceStore } from '../stores/voice.ts';
 import { useAuthStore } from '../stores/auth.ts';
 import { VoiceControls } from './VoiceControls.tsx';
 import { VideoGrid } from './VideoGrid.tsx';
+import { AudioRenderers } from './AudioRenderers.tsx';
 
 export function VoicePanel() {
   const isConnected = useVoiceStore((state) => state.isConnected);
@@ -122,6 +123,7 @@ export function VoicePanel() {
 
       {/* Video grid */}
       <VideoGrid />
+      <AudioRenderers />
 
       {/* Controls */}
       <div className="px-3 py-1.5">