Chat-Einstellungen, Tabliste fürs Netzwerk, Fixes aus dem Review

src/main/java/eu/mhsl/craftattack/chatbridge/Chat.java

@@ -39,13 +39,15 @@ final class Chat {
     private final Config config;
     private final Names names;
     private final Mutes mutes;
+    private final ChatSettings settings;
 
-    Chat(ProxyServer proxy, Logger logger, Config config, Names names, Mutes mutes) {
+    Chat(ProxyServer proxy, Logger logger, Config config, Names names, Mutes mutes, ChatSettings settings) {
         this.proxy = proxy;
         this.logger = logger;
         this.config = config;
         this.names = names;
         this.mutes = mutes;
+        this.settings = settings;
     }
 
     void handle(Player sender, String message) {
@@ -56,34 +58,40 @@ final class Chat {
         }
 
         Set<Player> mentioned = new LinkedHashSet<>();
-        Component line = Component.text()
-                .append(this.tag(server))
-                .append(this.names.clickable(sender))
-                .append(Component.text(" > ", GRAY))
-                .append(this.body(message, mentioned).colorIfAbsent(SILVER))
-                .build();
+        Component highlighted = this.line(server, sender, this.body(message, mentioned));
+        Component plain = this.line(server, sender, Component.text(message));
 
         for (Player player : this.proxy.getAllPlayers()) {
             if (server != null && this.config.unsilencedServers().contains(server) && server.equals(serverOf(player))) continue;
-            player.sendMessage(line);
+            ChatSettings.Values values = this.settings.of(player.getUniqueId());
+            player.sendMessage(values.highlightMentions() ? highlighted : plain);
+            if (mentioned.contains(player) && !player.equals(sender) && values.mentionSound()) player.playSound(MENTION);
         }
-        mentioned.stream()
-                .filter(player -> !player.equals(sender))
-                .forEach(player -> player.playSound(MENTION));
 
         this.logger.info("[chat] [{}] {}: {}", server, sender.getUsername(), message);
     }
 
     void announceJoin(Player player) {
-        this.broadcast(Component.text(">>> ", NamedTextColor.GREEN).append(this.names.clickable(player)));
+        this.announce(Component.text(">>> ", NamedTextColor.GREEN).append(this.names.clickable(player)));
     }
 
     void announceLeave(Player player) {
-        this.broadcast(Component.text("<<< ", NamedTextColor.RED).append(this.names.clickable(player)));
+        this.announce(Component.text("<<< ", NamedTextColor.RED).append(this.names.clickable(player)));
     }
 
-    void broadcast(Component line) {
-        this.proxy.getAllPlayers().forEach(player -> player.sendMessage(line));
+    private void announce(Component line) {
+        this.proxy.getAllPlayers().stream()
+                .filter(player -> this.settings.of(player.getUniqueId()).joinAndLeave())
+                .forEach(player -> player.sendMessage(line));
+    }
+
+    private Component line(@Nullable String server, Player sender, Component body) {
+        return Component.text()
+                .append(this.tag(server))
+                .append(this.names.clickable(sender))
+                .append(Component.text(" > ", GRAY))
+                .append(body.colorIfAbsent(SILVER))
+                .build();
     }
 
     /** Meldet einem gestummten Spieler die Restzeit; true, wenn er gestummt ist. */

src/main/java/eu/mhsl/craftattack/chatbridge/ChatBridge.java

@@ -13,19 +13,23 @@ import net.luckperms.api.LuckPermsProvider;
 import org.slf4j.Logger;
 
 import java.nio.file.Path;
+import java.util.concurrent.TimeUnit;
 
 @Plugin(
         id = "chat-bridge",
         name = "chat-bridge",
-        version = "1.0.0",
-        description = "Serverübergreifender Chat: öffentlicher Chat, /msg, Adminchat, Mute und Join/Leave",
+        version = "1.1.0",
+        description = "Serverübergreifender Chat und Tabliste: öffentlicher Chat, /msg, Adminchat, Mute, Join/Leave",
         authors = {"MHSL"},
         dependencies = {@Dependency(id = "luckperms")}
 )
 public final class ChatBridge {
-    /** Backend → Proxy: Rang-Prefixe aus spawn ({@code "prefix"}, danach Adventure-JSON oder leer). */
+    /** Kanal zu spawn (Appliance NetworkChat): Rang-Prefixe und Chat-Einstellungen, Format siehe dort. */
     static final ChannelIdentifier CHANNEL = MinecraftChannelIdentifier.create("craftattack", "chat");
 
+    /** Abgleich der Tablisten; nach Join, Wechsel und Quit zusätzlich kurz danach. */
+    static final long TAB_REFRESH_SECONDS = 2;
+
     private final ProxyServer proxy;
     private final Logger logger;
     private final Path dataDirectory;
@@ -47,13 +51,24 @@ public final class ChatBridge {
             return;
         }
 
+        ChatSettings settings;
+        try {
+            settings = new ChatSettings(this.dataDirectory, this.logger);
+        } catch (Exception e) {
+            this.logger.error("settings.properties nicht lesbar, chat-bridge ist aus", e);
+            return;
+        }
+
         Names names = new Names(config);
         Mutes mutes = new Mutes(LuckPermsProvider.get());
-        Chat chat = new Chat(this.proxy, this.logger, config, names, mutes);
+        Chat chat = new Chat(this.proxy, this.logger, config, names, mutes, settings);
         PrivateMessages privateMessages = new PrivateMessages(this.proxy, this.logger, config, names, chat);
 
+        TabLists tabLists = new TabLists(this.proxy, config, names);
+
         this.proxy.getChannelRegistrar().register(CHANNEL);
-        this.proxy.getEventManager().register(this, new ChatListener(this, this.proxy, this.logger, names, chat, privateMessages));
+        this.proxy.getEventManager().register(this, new ChatListener(this, this.proxy, this.logger, config, names, chat, privateMessages, settings, tabLists));
+        this.proxy.getScheduler().buildTask(this, tabLists::refresh).repeat(TAB_REFRESH_SECONDS, TimeUnit.SECONDS).schedule();
         Commands.register(this, this.proxy, this.logger, config, names, chat, privateMessages, mutes);
 
         this.logger.info("chat-bridge aktiv, Kürzel {}, ohne Silencer {}", config.serverTags(), config.unsilencedServers());

src/main/java/eu/mhsl/craftattack/chatbridge/ChatListener.java

@@ -1,6 +1,8 @@
 package eu.mhsl.craftattack.chatbridge;
 
 import com.google.common.io.ByteArrayDataInput;
+import com.google.common.io.ByteArrayDataOutput;
+import com.google.common.io.ByteStreams;
 import com.velocitypowered.api.event.Subscribe;
 import com.velocitypowered.api.event.connection.DisconnectEvent;
 import com.velocitypowered.api.event.connection.PluginMessageEvent;
@@ -12,9 +14,9 @@ import com.velocitypowered.api.proxy.ServerConnection;
 import net.kyori.adventure.text.serializer.gson.GsonComponentSerializer;
 import org.slf4j.Logger;
 
+import java.util.HashSet;
 import java.util.Set;
 import java.util.UUID;
-import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.TimeUnit;
 
 final class ChatListener {
@@ -27,16 +29,23 @@ final class ChatListener {
     private final Names names;
     private final Chat chat;
     private final PrivateMessages privateMessages;
+    private final ChatSettings settings;
+    private final Config config;
+    private final TabLists tabLists;
     /** Wer eine Join-Meldung bekommen hat, bekommt beim Verlassen auch eine. */
-    private final Set<UUID> announced = ConcurrentHashMap.newKeySet();
+    private final Set<UUID> announced = new HashSet<>();
 
-    ChatListener(Object plugin, ProxyServer proxy, Logger logger, Names names, Chat chat, PrivateMessages privateMessages) {
+    ChatListener(Object plugin, ProxyServer proxy, Logger logger, Config config, Names names, Chat chat,
+                 PrivateMessages privateMessages, ChatSettings settings, TabLists tabLists) {
         this.plugin = plugin;
         this.proxy = proxy;
         this.logger = logger;
         this.names = names;
         this.chat = chat;
         this.privateMessages = privateMessages;
+        this.settings = settings;
+        this.config = config;
+        this.tabLists = tabLists;
     }
 
     /**
@@ -57,13 +66,30 @@ final class ChatListener {
 
         try {
             ByteArrayDataInput in = event.dataAsDataStream();
-            String type = in.readUTF();
-            if (type.equals("prefix")) {
-                String json = in.readUTF();
-                this.names.setPrefix(
-                        connection.getPlayer().getUniqueId(),
-                        connection.getServerInfo().getName(),
-                        json.isEmpty() ? null : GsonComponentSerializer.gson().deserialize(json));
+            UUID player = connection.getPlayer().getUniqueId();
+            String server = connection.getServerInfo().getName();
+            switch (in.readUTF()) {
+                case "prefix" -> {
+                    String json = in.readUTF();
+                    this.names.setPrefix(player, server, json.isEmpty() ? null : GsonComponentSerializer.gson().deserialize(json));
+                }
+                case "settings-set" -> {
+                    // Andere spawn-Server haben eigene Spielerdaten mit Defaults; die sollen echte Werte nicht verdrängen
+                    ChatSettings.Values sent = readSettings(in);
+                    if (this.settings.has(player) || server.equals(this.config.settingsServer())) this.settings.set(player, sent);
+                }
+                case "settings-hello" -> {
+                    ChatSettings.Values sent = readSettings(in);
+                    if (this.settings.has(player)) {
+                        // Velocity kennt die Werte schon, das Backend übernimmt sie
+                        ChatSettings.Values known = this.settings.of(player);
+                        if (!known.equals(sent)) sendSettings(connection, known);
+                    } else if (server.equals(this.config.settingsServer())) {
+                        this.settings.set(player, sent);
+                    }
+                }
+                default -> {
+                }
             }
         } catch (Exception e) {
             this.logger.warn("Ungültige Nachricht von {} für {}", connection.getServerInfo().getName(),
@@ -71,12 +97,29 @@ final class ChatListener {
         }
     }
 
+    private static ChatSettings.Values readSettings(ByteArrayDataInput in) {
+        return new ChatSettings.Values(in.readBoolean(), in.readBoolean(), in.readBoolean());
+    }
+
+    private static void sendSettings(ServerConnection connection, ChatSettings.Values values) {
+        ByteArrayDataOutput out = ByteStreams.newDataOutput();
+        out.writeUTF("settings");
+        out.writeBoolean(values.joinAndLeave());
+        out.writeBoolean(values.highlightMentions());
+        out.writeBoolean(values.mentionSound());
+        connection.sendPluginMessage(ChatBridge.CHANNEL, out.toByteArray());
+    }
+
     @Subscribe
     public void onServerPostConnect(ServerPostConnectEvent event) {
-        if (event.getPreviousServer() != null) return;
         Player player = event.getPlayer();
+        this.tabLists.reset(player.getUniqueId());
+        this.refreshTabListsSoon();
+        if (event.getPreviousServer() != null) return;
         this.proxy.getScheduler().buildTask(this.plugin, () -> {
-            if (!player.isActive() || !this.announced.add(player.getUniqueId())) return;
+            synchronized (this.announced) {
+                if (!player.isActive() || !this.announced.add(player.getUniqueId())) return;
+            }
             this.chat.announceJoin(player);
         }).delay(JOIN_DELAY_MS, TimeUnit.MILLISECONDS).schedule();
     }
@@ -84,8 +127,17 @@ final class ChatListener {
     @Subscribe
     public void onDisconnect(DisconnectEvent event) {
         Player player = event.getPlayer();
-        if (this.announced.remove(player.getUniqueId())) this.chat.announceLeave(player);
+        boolean wasAnnounced;
+        synchronized (this.announced) {
+            wasAnnounced = this.announced.remove(player.getUniqueId());
+        }
+        if (wasAnnounced) this.chat.announceLeave(player);
         this.names.forget(player.getUniqueId());
         this.privateMessages.forget(player.getUniqueId());
+        this.refreshTabListsSoon();
+    }
+
+    private void refreshTabListsSoon() {
+        this.proxy.getScheduler().buildTask(this.plugin, this.tabLists::refresh).delay(500, TimeUnit.MILLISECONDS).schedule();
     }
 }

src/main/java/eu/mhsl/craftattack/chatbridge/ChatSettings.java

@@ -0,0 +1,86 @@
+package eu.mhsl.craftattack.chatbridge;
+
+import org.slf4j.Logger;
+
+import java.io.IOException;
+import java.io.Reader;
+import java.io.Writer;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardCopyOption;
+import java.util.Map;
+import java.util.Properties;
+import java.util.UUID;
+import java.util.concurrent.ConcurrentHashMap;
+
+/**
+ * Chat-Einstellungen der Spieler, Quelle der Wahrheit für das ganze Netzwerk. Geändert werden sie in
+ * {@code /settings} auf einem spawn-Server, der sie herschickt; beim Join bekommt spawn die
+ * gespeicherten Werte zurück. Gespeichert in {@code plugins/chat-bridge/settings.properties}.
+ */
+final class ChatSettings {
+    record Values(boolean joinAndLeave, boolean highlightMentions, boolean mentionSound) {
+        static final Values DEFAULT = new Values(true, true, true);
+
+        String serialize() {
+            return this.joinAndLeave + "," + this.highlightMentions + "," + this.mentionSound;
+        }
+
+        static Values parse(String value) {
+            String[] parts = value.split(",");
+            if (parts.length != 3) throw new IllegalArgumentException("drei Werte erwartet: " + value);
+            return new Values(Boolean.parseBoolean(parts[0]), Boolean.parseBoolean(parts[1]), Boolean.parseBoolean(parts[2]));
+        }
+    }
+
+    private final Path file;
+    private final Logger logger;
+    private final Map<UUID, Values> values = new ConcurrentHashMap<>();
+
+    ChatSettings(Path dataDirectory, Logger logger) throws IOException {
+        this.file = dataDirectory.resolve("settings.properties");
+        this.logger = logger;
+        if (Files.notExists(this.file)) return;
+        Properties properties = new Properties();
+        try (Reader reader = Files.newBufferedReader(this.file, StandardCharsets.UTF_8)) {
+            properties.load(reader);
+        }
+        properties.forEach((key, value) -> {
+            try {
+                this.values.put(UUID.fromString((String) key), Values.parse((String) value));
+            } catch (IllegalArgumentException e) {
+                logger.warn("settings.properties: Eintrag {} ungültig, ignoriert", key);
+            }
+        });
+    }
+
+    Values of(UUID player) {
+        return this.values.getOrDefault(player, Values.DEFAULT);
+    }
+
+    boolean has(UUID player) {
+        return this.values.containsKey(player);
+    }
+
+    void set(UUID player, Values values) {
+        if (values.equals(this.values.get(player))) return;
+        this.values.put(player, values);
+        this.save();
+    }
+
+    private synchronized void save() {
+        Properties properties = new Properties();
+        this.values.forEach((uuid, values) -> properties.setProperty(uuid.toString(), values.serialize()));
+        Path temporary = this.file.resolveSibling("settings.properties.new");
+        try {
+            Files.createDirectories(this.file.getParent());
+            try (Writer writer = Files.newBufferedWriter(temporary, StandardCharsets.UTF_8)) {
+                properties.store(writer, "chat-bridge: UUID=Join/Leave,Erwähnungen hervorheben,Erwähnungston");
+            }
+            Files.move(temporary, this.file, StandardCopyOption.REPLACE_EXISTING, StandardCopyOption.ATOMIC_MOVE);
+        } catch (IOException e) {
+            this.logger.error("Chat-Einstellungen konnten nicht gespeichert werden", e);
+        }
+    }
+}

src/main/java/eu/mhsl/craftattack/chatbridge/Commands.java

@@ -15,6 +15,7 @@ import java.util.List;
 import java.util.Locale;
 import java.util.UUID;
 import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionException;
 
 /** Befehle auf dem Proxy; sie greifen vor dem Backend und funktionieren damit auf jedem Server. */
 final class Commands {
@@ -93,7 +94,7 @@ final class Commands {
                         .thenCompose(uuid -> mutes.mute(uuid, Duration.ofHours(hours)))
                         .whenComplete((ignored, error) -> {
                             if (error != null) {
-                                invocation.source().sendMessage(Component.text("Der Spieler " + args[0] + " ist unbekannt.", NamedTextColor.RED));
+                                reportError(invocation, logger, args[0], error);
                                 return;
                             }
                             invocation.source().sendMessage(Component.text(args[0] + " wurde für " + hours + " Stunden gestummt!", NamedTextColor.GREEN));
@@ -125,9 +126,13 @@ final class Commands {
                 }
                 resolve(proxy, mutes, args[0])
                         .thenCompose(mutes::unmute)
-                        .whenComplete((ignored, error) -> {
+                        .whenComplete((wasMuted, error) -> {
                             if (error != null) {
-                                invocation.source().sendMessage(Component.text("Der Spieler " + args[0] + " ist unbekannt.", NamedTextColor.RED));
+                                reportError(invocation, logger, args[0], error);
+                                return;
+                            }
+                            if (!wasMuted) {
+                                invocation.source().sendMessage(Component.text(args[0] + " war nicht gestummt.", NamedTextColor.GRAY));
                                 return;
                             }
                             invocation.source().sendMessage(Component.text(args[0] + " ist nicht mehr gestummt.", NamedTextColor.GREEN));
@@ -147,12 +152,28 @@ final class Commands {
         });
     }
 
+    private static void reportError(SimpleCommand.Invocation invocation, Logger logger, String name, Throwable error) {
+        Throwable cause = error instanceof CompletionException && error.getCause() != null ? error.getCause() : error;
+        if (cause instanceof UnknownPlayerException) {
+            invocation.source().sendMessage(Component.text("Der Spieler " + name + " ist unbekannt.", NamedTextColor.RED));
+            return;
+        }
+        invocation.source().sendMessage(Component.text("Konnte nicht gespeichert werden, siehe Velocity-Log.", NamedTextColor.RED));
+        logger.error("[mute] Fehler für {}", name, cause);
+    }
+
+    private static final class UnknownPlayerException extends RuntimeException {
+        UnknownPlayerException(String name) {
+            super("unbekannt: " + name);
+        }
+    }
+
     /** Online zuerst über den Proxy, sonst über LuckPerms (Spieler, die schon mal da waren). */
     private static CompletableFuture<UUID> resolve(ProxyServer proxy, Mutes mutes, String name) {
         return proxy.getPlayer(name)
                 .map(player -> CompletableFuture.completedFuture(player.getUniqueId()))
                 .orElseGet(() -> mutes.lookup(name).thenApply(uuid -> {
-                    if (uuid == null) throw new IllegalArgumentException("unbekannt: " + name);
+                    if (uuid == null) throw new UnknownPlayerException(name);
                     return uuid;
                 }));
     }

src/main/java/eu/mhsl/craftattack/chatbridge/Config.java

@@ -20,7 +20,9 @@ import java.util.stream.Collectors;
  */
 record Config(
         Map<String, String> serverTags,
+        Map<String, String> tabTags,
         Set<String> unsilencedServers,
+        String settingsServer,
         String adminPermission,
         String markerPermission
 ) {
@@ -44,7 +46,9 @@ record Config(
     static Config fromProperties(Properties p) {
         return new Config(
                 pairs(p.getProperty("server-tags", "")),
+                pairs(p.getProperty("tab-tags", "")),
                 Set.copyOf(split(p.getProperty("unsilenced-servers", ""))),
+                p.getProperty("settings-server", "craftattack").trim(),
                 p.getProperty("admin-permission", "admin").trim(),
                 p.getProperty("marker-permission", "adminmarker").trim()
         );
@@ -54,7 +58,7 @@ record Config(
         Map<String, String> pairs = new HashMap<>();
         for (String entry : split(value)) {
             int separator = entry.indexOf('=');
-            if (separator <= 0) throw new IllegalArgumentException("server-tags: '" + entry + "' braucht Server=Kürzel");
+            if (separator <= 0) throw new IllegalArgumentException("'" + entry + "' braucht Server=Kürzel");
             pairs.put(entry.substring(0, separator).trim(), entry.substring(separator + 1).trim());
         }
         return Map.copyOf(pairs);

src/main/java/eu/mhsl/craftattack/chatbridge/Mutes.java

@@ -12,6 +12,7 @@ import java.util.Objects;
 import java.util.Optional;
 import java.util.UUID;
 import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.function.Consumer;
 
 /**
@@ -46,8 +47,14 @@ final class Mutes {
         });
     }
 
-    CompletableFuture<Void> unmute(UUID player) {
-        return this.modify(player, user -> user.data().clear(node -> node.getKey().equals(NODE)));
+    /** true, wenn ein (noch laufender) Mute entfernt wurde. */
+    CompletableFuture<Boolean> unmute(UUID player) {
+        AtomicBoolean wasMuted = new AtomicBoolean();
+        return this.modify(player, user -> {
+            wasMuted.set(user.getNodes(NodeType.PERMISSION).stream()
+                    .anyMatch(node -> node.getPermission().equals(NODE) && !node.hasExpired()));
+            user.data().clear(node -> node.getKey().equals(NODE));
+        }).thenApply(ignored -> wasMuted.get());
     }
 
     CompletableFuture<UUID> lookup(String name) {

src/main/java/eu/mhsl/craftattack/chatbridge/PrivateMessages.java

@@ -50,6 +50,8 @@ final class PrivateMessages {
     void reply(Player sender, String message) {
         List<Conversation> replyList = this.replyMapping.computeIfAbsent(sender.getUniqueId(), uuid -> new ArrayList<>());
         long now = System.currentTimeMillis();
+        // whisper() sperrt die Liste des Empfängers; erst nach diesem Block, sonst Deadlock bei gleichzeitigem /r
+        Player whisperTo = null;
 
         synchronized (replyList) {
             replyList.removeIf(conversation -> conversation.lastSet() < now - CONVERSATION_TIMEOUT_MINUTES * 60_000L);
@@ -81,36 +83,40 @@ final class PrivateMessages {
                     return;
                 }
                 replyList.clear();
-                this.whisper(sender, target, message);
-                return;
+                whisperTo = target;
+            } else {
+                this.offerChoice(sender, message, replyList, old);
             }
-
-            TextComponent.Builder choice = Component.text()
-                    .append(Component.newline())
-                    .append(PREFIX)
-                    .append(Component.text("Das Ziel für /r hat sich bei dir in den letzten " + TARGET_CHANGE_TIMEOUT_SECONDS
-                            + " Sekunden geändert. Wer soll deine Nachricht erhalten? ", NamedTextColor.RED))
-                    .append(Component.newline())
-                    .append(Component.newline());
-
-            if (!old.isEmpty()) {
-                Conversation youngestOld = old.stream()
-                        .max(Comparator.comparingLong(Conversation::lastSet))
-                        .orElse(old.getLast());
-                replyList.removeAll(old);
-                replyList.add(youngestOld);
-            }
-
-            replyList.stream().map(Conversation::targetName).distinct().forEach(name -> choice
-                    .append(Component.text("[")
-                            .append(Component.text(name, NamedTextColor.GOLD))
-                            .append(Component.text("]"))
-                            .clickEvent(ClickEvent.runCommand("/msg " + name + " " + message))
-                            .hoverEvent(HoverEvent.showText(Component.text("Klicke, um diesem Spieler zu schreiben.", NamedTextColor.GOLD))))
-                    .append(Component.text("  ")));
-            choice.append(Component.newline());
-            sender.sendMessage(choice.build());
         }
+        if (whisperTo != null) this.whisper(sender, whisperTo, message);
+    }
+
+    private void offerChoice(Player sender, String message, List<Conversation> replyList, List<Conversation> old) {
+        TextComponent.Builder choice = Component.text()
+                .append(Component.newline())
+                .append(PREFIX)
+                .append(Component.text("Das Ziel für /r hat sich bei dir in den letzten " + TARGET_CHANGE_TIMEOUT_SECONDS
+                        + " Sekunden geändert. Wer soll deine Nachricht erhalten? ", NamedTextColor.RED))
+                .append(Component.newline())
+                .append(Component.newline());
+
+        if (!old.isEmpty()) {
+            Conversation youngestOld = old.stream()
+                    .max(Comparator.comparingLong(Conversation::lastSet))
+                    .orElse(old.getLast());
+            replyList.removeAll(old);
+            replyList.add(youngestOld);
+        }
+
+        replyList.stream().map(Conversation::targetName).distinct().forEach(name -> choice
+                .append(Component.text("[")
+                        .append(Component.text(name, NamedTextColor.GOLD))
+                        .append(Component.text("]"))
+                        .clickEvent(ClickEvent.runCommand("/msg " + name + " " + message))
+                        .hoverEvent(HoverEvent.showText(Component.text("Klicke, um diesem Spieler zu schreiben.", NamedTextColor.GOLD))))
+                .append(Component.text("  ")));
+        choice.append(Component.newline());
+        sender.sendMessage(choice.build());
     }
 
     void message(Player sender, String targetName, String message) {

src/main/java/eu/mhsl/craftattack/chatbridge/TabLists.java

@@ -0,0 +1,103 @@
+package eu.mhsl.craftattack.chatbridge;
+
+import com.velocitypowered.api.proxy.Player;
+import com.velocitypowered.api.proxy.ProxyServer;
+import com.velocitypowered.api.proxy.player.TabList;
+import com.velocitypowered.api.proxy.player.TabListEntry;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.format.NamedTextColor;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+import java.util.UUID;
+import java.util.concurrent.ConcurrentHashMap;
+
+/**
+ * Ergänzt die Tabliste jedes Spielers um die Spieler auf anderen Servern (grau, unten, mit Server).
+ * Die Einträge der Spieler auf dem eigenen Server schickt weiter das Backend (Skins, Spielmodus,
+ * Prefixe); die werden hier nie angefasst.
+ * <p>
+ * Abgleich statt Ereignisketten: Beim Serverwechsel räumen Velocity und das alte Backend die Liste
+ * in unbestimmter Reihenfolge auf, {@link #refresh()} läuft deshalb regelmäßig und stellt den
+ * Sollzustand her.
+ */
+final class TabLists {
+    /** Vanilla sortiert höhere Werte nach oben; Backends lassen 0 stehen. */
+    private static final int REMOTE_ORDER = -1000;
+
+    private final ProxyServer proxy;
+    private final Config config;
+    private final Names names;
+    /** Je Betrachter die Einträge, die von hier stammen. */
+    private final Map<UUID, Set<UUID>> added = new ConcurrentHashMap<>();
+
+    TabLists(ProxyServer proxy, Config config, Names names) {
+        this.proxy = proxy;
+        this.config = config;
+        this.names = names;
+    }
+
+    synchronized void refresh() {
+        for (Player viewer : this.proxy.getAllPlayers()) {
+            String viewerServer = Chat.serverOf(viewer);
+            if (viewerServer == null) continue;
+            TabList tabList = viewer.getTabList();
+            Set<UUID> ours = this.added.computeIfAbsent(viewer.getUniqueId(), uuid -> new HashSet<>());
+
+            Set<UUID> wanted = new HashSet<>();
+            for (Player other : this.proxy.getAllPlayers()) {
+                String otherServer = Chat.serverOf(other);
+                if (other.equals(viewer) || otherServer == null || otherServer.equals(viewerServer)) continue;
+                wanted.add(other.getUniqueId());
+
+                Component displayName = this.displayName(other, otherServer);
+                TabListEntry entry = tabList.getEntry(other.getUniqueId()).orElse(null);
+                if (entry == null || !ours.contains(other.getUniqueId())) {
+                    // Ein Rest-Eintrag vom Backend (gerade gewechselt) wird ersetzt
+                    if (entry != null) tabList.removeEntry(other.getUniqueId());
+                    tabList.addEntry(TabListEntry.builder()
+                            .tabList(tabList)
+                            .profile(other.getGameProfile())
+                            .displayName(displayName)
+                            .latency((int) Math.min(other.getPing(), Integer.MAX_VALUE))
+                            .gameMode(0)
+                            .listed(true)
+                            .listOrder(REMOTE_ORDER)
+                            .build());
+                    ours.add(other.getUniqueId());
+                } else {
+                    if (!Objects.equals(entry.getDisplayNameComponent().orElse(null), displayName)) entry.setDisplayName(displayName);
+                    int latency = (int) Math.min(other.getPing(), Integer.MAX_VALUE);
+                    if (entry.getLatency() != latency) entry.setLatency(latency);
+                }
+            }
+
+            ours.removeIf(uuid -> {
+                if (wanted.contains(uuid)) return false;
+                // Jetzt auf demselben Server: Der Eintrag gehört dem Backend, nicht entfernen
+                boolean sameServer = this.proxy.getPlayer(uuid)
+                        .map(Chat::serverOf)
+                        .map(viewerServer::equals)
+                        .orElse(false);
+                if (!sameServer) tabList.removeEntry(uuid);
+                return true;
+            });
+        }
+        this.added.keySet().removeIf(uuid -> this.proxy.getPlayer(uuid).isEmpty());
+    }
+
+    /** Nach einem Serverwechsel hat der Client eine frische Liste, eigene Einträge neu anlegen. */
+    synchronized void reset(UUID viewer) {
+        this.added.remove(viewer);
+    }
+
+    private Component displayName(Player player, String server) {
+        String tag = this.config.tabTags().getOrDefault(server, this.config.serverTags().getOrDefault(server, server));
+        return Component.text()
+                .append(this.names.plain(player))
+                .append(Component.text(" · " + tag, NamedTextColor.DARK_GRAY))
+                .build();
+    }
+}