Hide query clients from the log and name server groups correctly

- Query clients were already left out of the tree, but their joins, moves
  and ping-timeout drops were still logged and could play sounds; TS3 keeps
  them out of sight entirely.
- The name field of notifyservergroupclientadded/deleted is the client's
  nickname, not the group's, so "added to server group" named the wrong
  thing. Resolve the group by id instead.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

ts3-client/core/src/main/java/com/ts3client/net/ConnectionEventHandler.java

@@ -50,7 +50,8 @@ final class ConnectionEventHandler implements TS3Listener {
         c.serverGroupIds = parseIntList(e.getClientServerGroups());
         c.channelGroupId = e.getClientChannelGroupId();
         c.self = (e.getClientId() == conn.getSelfClientId());
-        if (e.getClientId() != conn.getSelfClientId()) {
+        // Query clients stay out of sight, as they do in the tree and in TS3's log.
+        if (!c.self && !c.isQuery()) {
             conn.applyContact(c);
             announceClientEntered(e);
             logClientEntered(e);
@@ -60,9 +61,10 @@ final class ConnectionEventHandler implements TS3Listener {
 
     @Override
     public void onClientLeave(ClientLeaveEvent e) {
+        ClientEntry gone = conn.getModel().getClient(e.getClientId());
         if (e.getClientId() == conn.getSelfClientId()) {
             announceOwnRemoval(safeInt(e, "reasonid"), e);
-        } else {
+        } else if (gone == null || !gone.isQuery()) {
             String name = conn.clientLink(e.getClientId());
             announceClientLeft(e);
             logClientLeft(e, name);
@@ -81,7 +83,7 @@ final class ConnectionEventHandler implements TS3Listener {
             if (e.getClientId() == conn.getSelfClientId()) {
                 announceOwnMove(safeInt(e, "reasonid"), e);
                 logOwnMove(e, from, e.getTargetChannelId());
-            } else {
+            } else if (!c.isQuery()) {
                 announceClientMoved(safeInt(e, "reasonid"), e.getClientId(), from, e.getTargetChannelId());
                 logClientMoved(e, conn.clientLink(c.id), from, e.getTargetChannelId());
             }
@@ -487,8 +489,8 @@ final class ConnectionEventHandler implements TS3Listener {
                 SoundEvent.YOU_SERVERGROUP_ADDED_BY_SERVER)
                 : byInvoker(e, SoundEvent.CLIENT_SERVERGROUP_ADDED_BY_USER,
                 SoundEvent.CLIENT_SERVERGROUP_ADDED_BY_USER, SoundEvent.CLIENT_SERVERGROUP_ADDED_BY_SERVER),
-                groupVars(e.getClientId(), e.getName()));
-        conn.log(clientLogName(e.getClientId()) + " was added to server group \"" + e.getName()
+                groupVars(e.getClientId(), serverGroupName(e.getServerGroupId())));
+        conn.log(clientLogName(e.getClientId()) + " was added to server group \"" + serverGroupName(e.getServerGroupId())
                 + "\" by " + invokerName(e) + ".");
         conn.ui.onModelChanged();
     }
@@ -504,8 +506,8 @@ final class ConnectionEventHandler implements TS3Listener {
                 SoundEvent.YOU_SERVERGROUP_REMOVED_BY_USER, SoundEvent.YOU_SERVERGROUP_REMOVED_BY_SERVER)
                 : byInvoker(e, SoundEvent.CLIENT_SERVERGROUP_REMOVED_BY_USER,
                 SoundEvent.CLIENT_SERVERGROUP_REMOVED_BY_USER, SoundEvent.CLIENT_SERVERGROUP_REMOVED_BY_SERVER),
-                groupVars(clientId, e.get("name")));
-        conn.log(clientLogName(clientId) + " was removed from server group \"" + TeamspeakConnection.orEmpty(e.get("name"))
+                groupVars(clientId, serverGroupName(e.getServerGroupId())));
+        conn.log(clientLogName(clientId) + " was removed from server group \"" + serverGroupName(e.getServerGroupId())
                 + "\" by " + invokerName(e) + ".");
         conn.ui.onModelChanged();
     }
@@ -527,6 +529,15 @@ final class ConnectionEventHandler implements TS3Listener {
         conn.ui.onModelChanged();
     }
 
+    /**
+     * The group's own name. The notify's {@code name} field is misleading: TeamSpeak fills
+     * it with the client's nickname, not the group's.
+     */
+    private String serverGroupName(int groupId) {
+        Group g = conn.getModel().serverGroup(groupId);
+        return g != null ? g.name : "#" + groupId;
+    }
+
     /** A client's name for a log line, as a link, falling back to its id once it has left. */
     private String clientLogName(int clientId) {
         return conn.clientLink(clientId);

ts3-client/core/src/main/java/com/ts3client/net/ServerModel.java

@@ -64,6 +64,10 @@ public final class ServerModel {
         return g == null ? null : g.name;
     }
 
+    public synchronized Group serverGroup(int id) {
+        return serverGroups.get(id);
+    }
+
     /** Resolves a client's server-group ids to groups, ordered for display. */
     public synchronized List<Group> serverGroupsOf(int[] ids) {
         List<Group> groups = new ArrayList<>();