fix(permissions): wire up MUTE_MEMBERS bitmask and fix member permissions in frontend

web/src/components/VoicePanel.tsx

@@ -5,6 +5,8 @@ import { api } from '../lib/api.ts';
 import { VoiceControls } from './VoiceControls.tsx';
 import { VideoGrid } from './VideoGrid.tsx';
 import { AudioRenderers } from './AudioRenderers.tsx';
+import { usePermissions } from '../lib/usePermissions.ts';
+import { useChannelStore } from '../stores/channel.ts';
 
 export function VoicePanel() {
   const isConnected = useVoiceStore((state) => state.isConnected);
@@ -17,8 +19,15 @@ export function VoicePanel() {
   const dismissWhisper = useVoiceStore((state) => state.dismissWhisper);
   const currentUserId = useAuthStore((state) => state.user?.id);
 
-  const userPermissions = useServerStore((state) => state.userPermissions);
-  const canMute = userPermissions.mute_members || userPermissions.administrator;
+  const activeChannelId = useChannelStore((s) => s.activeChannelId);
+  const channelsByServer = useChannelStore((s) => s.channelsByServer);
+  const activeServerId = useServerStore((s) => s.activeServerId);
+  
+  const serverId = activeChannelId 
+    ? Object.entries(channelsByServer).find(([_, channels]) => channels.some(c => c.id === activeChannelId))?.[0]
+    : null;
+    
+  const { canMute } = usePermissions(serverId || activeServerId);
 
   const handleMute = async (identity: string) => {
     if (!currentRoom) return;