feat: Introduce core sidebar component with user controls, voice state management, and update banner.

convex/voiceState.ts

@@ -85,15 +85,23 @@ export const getAll = query({
       isMuted: boolean;
       isDeafened: boolean;
       isScreenSharing: boolean;
+      avatarUrl: string | null;
     }>> = {};
 
     for (const s of states) {
+      const user = await ctx.db.get(s.userId);
+      let avatarUrl: string | null = null;
+      if (user?.avatarStorageId) {
+        avatarUrl = await ctx.storage.getUrl(user.avatarStorageId);
+      }
+
       (grouped[s.channelId] ??= []).push({
         userId: s.userId,
         username: s.username,
         isMuted: s.isMuted,
         isDeafened: s.isDeafened,
         isScreenSharing: s.isScreenSharing,
+        avatarUrl,
       });
     }