Fix initial user list visibility with channelsubscribeall

pkg/ts3client/client.go

@@ -372,6 +372,13 @@ func (c *Client) handleInternalEvent(eventType string, data map[string]any) {
 			}
 			c.channelsMu.Unlock()
 			c.emit(EventChannelList, &ChannelListEvent{Channels: chList})
+
+			// Subscribe to all channels to see users
+			// This fixes the issue where users are invisible until joining the channel
+			if c.internal != nil {
+				log.Println("Received channel list. Subscribing to all channels...")
+				c.internal.SendCommandString("channelsubscribeall")
+			}
 		}
 
 	case "audio":