refactor: 榜单改用原版计分板侧边栏显示

服务端读stats定期写入scoreboard objective；客户端/slsboard设本地sidebar display。删掉自绘HUD和网络包（GuiGraphicsExtractor渲染不走）。

src/main/java/com/github/zly2006/carpetslsaddition/ServerMain.java

@@ -43,12 +43,6 @@ public class ServerMain implements ModInitializer, CarpetExtension {
         LOGGER.info("[SLSA] onInitialize: managing Carpet extension");
         INSTANCE = this;
         CarpetServer.manageExtension(this);
-        com.github.zly2006.carpetslsaddition.net.BoardSyncPayload.register();
-        com.github.zly2006.carpetslsaddition.net.BoardTogglePayload.register();
-        // 玩家加入时同步榜单
-        net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents.JOIN.register(
-                (handler, sender, srv) ->
-                        com.github.zly2006.carpetslsaddition.util.BoardSyncManager.syncTo(handler.getPlayer()));
     }
 
     @Override
@@ -60,7 +54,7 @@ public class ServerMain implements ModInitializer, CarpetExtension {
     public void onServerLoaded(MinecraftServer server) {
         ServerMain.server = server;
         com.github.zly2006.carpetslsaddition.util.BotListManager.load();
-        com.github.zly2006.carpetslsaddition.util.BoardSyncManager.syncToAll(server);
+        com.github.zly2006.carpetslsaddition.util.BoardManager.ensureObjectives(server);
         startBoardWatcher(server);
     }
 
@@ -69,7 +63,7 @@ public class ServerMain implements ModInitializer, CarpetExtension {
         Thread t = new Thread(() -> {
             while (!Thread.currentThread().isInterrupted()) {
                 try {
-                    com.github.zly2006.carpetslsaddition.util.BoardSyncManager.tick(server);
+                    com.github.zly2006.carpetslsaddition.util.BoardManager.syncScores(server);
                     Thread.sleep(1000L);
                 } catch (InterruptedException e) {
                     return;

src/main/java/com/github/zly2006/carpetslsaddition/client/BoardClient.java

@@ -1,7 +1,5 @@
 package com.github.zly2006.carpetslsaddition.client;
 
-import com.github.zly2006.carpetslsaddition.net.BoardSyncPayload;
-import com.github.zly2006.carpetslsaddition.net.BoardTogglePayload;
 import com.mojang.brigadier.arguments.StringArgumentType;
 import net.fabricmc.api.ClientModInitializer;
 import net.fabricmc.api.EnvType;
@@ -9,75 +7,61 @@ import net.fabricmc.api.Environment;
 import net.fabricmc.fabric.api.client.command.v2.ClientCommands;
 import net.fabricmc.fabric.api.client.command.v2.ClientCommandRegistrationCallback;
 import net.fabricmc.fabric.api.client.command.v2.FabricClientCommandSource;
-import net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking;
-import net.fabricmc.fabric.api.client.rendering.v1.hud.HudElementRegistry;
 import net.minecraft.commands.SharedSuggestionProvider;
 import net.minecraft.network.chat.Component;
-import net.minecraft.resources.Identifier;
+import net.minecraft.world.scores.DisplaySlot;
-
+import net.minecraft.world.scores.Objective;
-import java.util.ArrayList;
-import java.util.List;
 
 /**
- * 客户端入口：接收榜单数据、注册 /slsboard 命令、注册 HUD 渲染。
+ * 客户端入口：/slsboard 命令，控制本地计分板侧边栏显示哪个榜。
  *
- * <p>纯客户端功能：显示哪个榜由本地状态决定，各玩家可不同步。
+ * <p>利用原版计分板侧边栏渲染（可靠），各玩家本地切换、互不影响。
+ * 数据由服务端从 stats 同步到 scoreboard objective（见 BoardManager）。
  */
 @Environment(EnvType.CLIENT)
 public class BoardClient implements ClientModInitializer {
 
-    public static final Identifier HUD_ID = Identifier.fromNamespaceAndPath("slsa", "board_hud");
-
     @Override
     public void onInitializeClient() {
-        // 1) 接收服务端下发的榜单数据
-        ClientPlayNetworking.registerGlobalReceiver(BoardSyncPayload.TYPE, (payload, context) -> {
-            List<BoardClientState.Entry> entries = new ArrayList<>();
-            for (BoardSyncPayload.Entry e : payload.entries()) {
-                entries.add(new BoardClientState.Entry(e.name(), e.score()));
-            }
-            com.github.zly2006.carpetslsaddition.ServerMain.LOGGER.info("[SLSA-BOARD-C] recv board={} entries={}", payload.board(), entries.size());
-            context.client().execute(() -> BoardClientState.setBoard(payload.board(), entries));
-        });
-
-        // 接收开关状态
-        ClientPlayNetworking.registerGlobalReceiver(BoardTogglePayload.TYPE, (payload, context) -> {
-            context.client().execute(() -> BoardClientState.enabled = payload.enabled());
-        });
-
-        // 2) /slsboard 命令（纯客户端，非 OP 也能用）
         ClientCommandRegistrationCallback.EVENT.register((dispatcher, registryAccess) -> {
             dispatcher.register(
                     ClientCommands.literal("slsboard")
-                            .then(ClientCommands.literal("deaths")
+                            .then(ClientCommands.literal("deaths").executes(c -> show(c.getSource(), "sls_deaths")))
-                                    .executes(c -> run(c.getSource(), () -> BoardClientState.toggle("deaths"))))
+                            .then(ClientCommands.literal("mined").executes(c -> show(c.getSource(), "sls_mined")))
-                            .then(ClientCommands.literal("mined")
+                            .then(ClientCommands.literal("off").executes(c -> { clear(c.getSource()); return 1; }))
-                                    .executes(c -> run(c.getSource(), () -> BoardClientState.toggle("mined"))))
-                            .then(ClientCommands.literal("off")
-                                    .executes(c -> run(c.getSource(), () -> BoardClientState.set(""))))
                             .then(ClientCommands.argument("board", StringArgumentType.word())
                                     .suggests((c, b) -> SharedSuggestionProvider.suggest(
                                             new String[]{"deaths", "mined", "off"}, b))
                                     .executes(c -> {
                                         String v = StringArgumentType.getString(c, "board");
-                                        return run(c.getSource(), () -> BoardClientState.set("off".equals(v) ? "" : v));
+                                        if ("off".equals(v)) { clear(c.getSource()); return 1; }
+                                        return show(c.getSource(), "sls_" + v);
                                     }))
             );
         });
-
-        // 3) HUD 渲染
-        HudElementRegistry.addLast(HUD_ID, new BoardHudElement());
     }
 
-    /** 统一的命令入口：先检查服务端开关，再执行动作。 */
+    private static int show(FabricClientCommandSource source, String objectiveName) {
-    private static int run(FabricClientCommandSource source, Runnable action) {
+        var mc = source.getClient();
-        if (!BoardClientState.enabled) {
+        var level = mc.level;
-            source.sendError(Component.literal("[SLSA] 榜单功能未开启（服务端 /carpet slsBoardEnabled true）"));
+        if (level == null) {
             return 0;
         }
-        action.run();
+        Objective obj = level.getScoreboard().getObjective(objectiveName);
-        String d = BoardClientState.displaying;
+        if (obj == null) {
-        source.sendFeedback(Component.literal("[SLSA] 榜单显示：" + (d.isEmpty() ? "关闭" : d)));
+            source.sendError(Component.literal("[SLSA] 找不到计分板 " + objectiveName + "（服务端规则未开启？）"));
+            return 0;
+        }
+        level.getScoreboard().setDisplayObjective(DisplaySlot.SIDEBAR, obj);
+        source.sendFeedback(Component.literal("[SLSA] 榜单显示：" + objectiveName));
         return 1;
     }
+
+    private static void clear(FabricClientCommandSource source) {
+        var level = source.getClient().level;
+        if (level != null) {
+            level.getScoreboard().setDisplayObjective(DisplaySlot.SIDEBAR, null);
+        }
+        source.sendFeedback(Component.literal("[SLSA] 榜单已关闭"));
+    }
 }

src/main/java/com/github/zly2006/carpetslsaddition/client/BoardClientState.java

@@ -1,61 +0,0 @@
-package com.github.zly2006.carpetslsaddition.client;
-
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-
-/**
- * 客户端榜单状态（纯客户端，各玩家独立，不同步）。
- *
- * <ul>
- *   <li>{@link #displaying}：当前显示哪个榜（"" = 不显示）。</li>
- *   <li>{@code deaths}/{@code mined}：从服务端收到的排行数据缓存。</li>
- * </ul>
- */
-public final class BoardClientState {
-
-    private BoardClientState() {}
-
-    /** 当前显示的榜："" / "deaths" / "mined"。 */
-    public static volatile String displaying = "";
-
-    /** 服务端 Carpet 规则 slsBoardEnabled 的状态（未开启则禁止使用）。 */
-    public static volatile boolean enabled = false;
-
-    private static volatile List<Entry> deaths = Collections.emptyList();
-    private static volatile List<Entry> mined = Collections.emptyList();
-
-    public record Entry(String name, int score) {}
-
-    public static void setBoard(String board, List<Entry> entries) {
-        if ("deaths".equals(board)) {
-            deaths = entries;
-        } else if ("mined".equals(board)) {
-            mined = entries;
-        }
-    }
-
-    public static List<Entry> current() {
-        return switch (displaying) {
-            case "deaths" -> deaths;
-            case "mined" -> mined;
-            default -> Collections.emptyList();
-        };
-    }
-
-    public static void toggle(String board) {
-        displaying = displaying.equals(board) ? "" : board;
-    }
-
-    public static void set(String board) {
-        displaying = board;
-    }
-
-    public static String currentTitle() {
-        return switch (displaying) {
-            case "deaths" -> "死亡榜";
-            case "mined" -> "挖掘榜";
-            default -> "";
-        };
-    }
-}

src/main/java/com/github/zly2006/carpetslsaddition/client/BoardHudElement.java

@@ -1,76 +0,0 @@
-package com.github.zly2006.carpetslsaddition.client;
-
-import net.fabricmc.api.EnvType;
-import net.fabricmc.api.Environment;
-import net.fabricmc.fabric.api.client.rendering.v1.hud.HudElement;
-import net.minecraft.client.DeltaTracker;
-import net.minecraft.client.Minecraft;
-import net.minecraft.client.gui.Font;
-import net.minecraft.client.gui.GuiGraphicsExtractor;
-import net.minecraft.network.chat.Component;
-
-import java.util.List;
-
-/**
- * 右侧排行榜 HUD：显示死亡榜/挖掘榜的 Top N。
- *
- * <p>纯客户端渲染，内容来自 {@link BoardClientState}（服务端同步而来）。
- */
-@Environment(EnvType.CLIENT)
-public class BoardHudElement implements HudElement {
-
-    private static final int LINE_H = 10;
-    private static final int PAD = 4;
-    private static final int BG = 0x80000000;       // 半透明黑
-    private static final int TITLE_COLOR = 0xFFFF55; // 黄
-    private static final int TEXT_COLOR = 0xFFFFFF;  // 白
-
-    @Override
-    public void extractRenderState(GuiGraphicsExtractor g, DeltaTracker delta) {
-        String board = BoardClientState.displaying;
-        if (board == null || board.isEmpty()) {
-            return;
-        }
-        Minecraft mc = Minecraft.getInstance();
-        if (mc.player == null || mc.options.hideGui) {
-            return;
-        }
-        List<BoardClientState.Entry> list = BoardClientState.current();
-        if (list.isEmpty()) {
-            return;
-        }
-        Font font = mc.font;
-
-        // 关键：进入新的渲染层，否则画的内容不显示
-        g.nextStratum();
-
-        String title = BoardClientState.currentTitle();
-        int maxW = font.width(title);
-        for (BoardClientState.Entry e : list) {
-            maxW = Math.max(maxW, font.width(line(e)));
-        }
-
-        int screenW = g.guiWidth();
-        int screenH = g.guiHeight();
-        int x = screenW - maxW - PAD * 2 - 2;
-        // 背景（右侧垂直居中）
-        int h = PAD * 2 + LINE_H * (list.size() + 1);
-        int y = screenH / 2 - h / 2;
-        g.fill(x, y, x + maxW + PAD * 2, y + h, BG);
-
-        int ty = y + PAD;
-        g.text(font, Component.literal(title), x + PAD, ty, TITLE_COLOR);
-        ty += LINE_H;
-        for (int i = 0; i < list.size(); i++) {
-            BoardClientState.Entry e = list.get(i);
-            g.text(font, Component.literal(line(e)), x + PAD, ty, TEXT_COLOR);
-            ty += LINE_H;
-        }
-    }
-
-    private static String line(BoardClientState.Entry e) {
-        String name = e.name();
-        if (name.length() > 12) name = name.substring(0, 12);
-        return name + " " + e.score();
-    }
-}

src/main/java/com/github/zly2006/carpetslsaddition/net/BoardSyncPayload.java

@@ -1,47 +0,0 @@
-package com.github.zly2006.carpetslsaddition.net;
-
-import com.github.zly2006.carpetslsaddition.ServerMain;
-import net.minecraft.network.RegistryFriendlyByteBuf;
-import net.minecraft.network.codec.ByteBufCodecs;
-import net.minecraft.network.codec.StreamCodec;
-import net.minecraft.network.protocol.common.custom.CustomPacketPayload;
-
-import java.util.List;
-
-/**
- * 服务端 → 客户端：同步排行榜数据。
- *
- * <p>携带某一种榜单（死亡/挖掘）的完整排行：条目为 (玩家名, 分数)，已按分数降序。
- * 客户端收到后缓存，供 HUD 渲染。
- */
-public record BoardSyncPayload(String board, List<Entry> entries) implements CustomPacketPayload {
-
-    /** 单条排行数据。 */
-    public record Entry(String name, int score) {
-        public static final StreamCodec<RegistryFriendlyByteBuf, Entry> CODEC = StreamCodec.composite(
-                ByteBufCodecs.STRING_UTF8, Entry::name,
-                ByteBufCodecs.VAR_INT, Entry::score,
-                Entry::new
-        );
-    }
-
-    public static final CustomPacketPayload.Type<BoardSyncPayload> TYPE =
-            new CustomPacketPayload.Type<>(net.minecraft.resources.Identifier.fromNamespaceAndPath("slsa", "board_sync"));
-
-    public static final StreamCodec<RegistryFriendlyByteBuf, BoardSyncPayload> CODEC = StreamCodec.composite(
-            ByteBufCodecs.STRING_UTF8, BoardSyncPayload::board,
-            Entry.CODEC.apply(ByteBufCodecs.list()), BoardSyncPayload::entries,
-            BoardSyncPayload::new
-    );
-
-    @Override
-    public CustomPacketPayload.Type<? extends CustomPacketPayload> type() {
-        return TYPE;
-    }
-
-    /** 在 onInitialize 里调用，注册 payload 类型。 */
-    public static void register() {
-        net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry.clientboundPlay().register(TYPE, CODEC);
-        ServerMain.LOGGER.info("[SLSA] registered BoardSyncPayload");
-    }
-}

src/main/java/com/github/zly2006/carpetslsaddition/net/BoardTogglePayload.java

@@ -1,31 +0,0 @@
-package com.github.zly2006.carpetslsaddition.net;
-
-import net.minecraft.network.RegistryFriendlyByteBuf;
-import net.minecraft.network.codec.ByteBufCodecs;
-import net.minecraft.network.codec.StreamCodec;
-import net.minecraft.network.protocol.common.custom.CustomPacketPayload;
-
-/**
- * 服务端 → 客户端：榜单功能总开关状态（对应 Carpet 规则 {@code slsBoardEnabled}）。
- *
- * <p>规则变化时下发；客户端收到后决定 {@code /slsboard} 是否可用。
- */
-public record BoardTogglePayload(boolean enabled) implements CustomPacketPayload {
-
-    public static final CustomPacketPayload.Type<BoardTogglePayload> TYPE =
-            new CustomPacketPayload.Type<>(net.minecraft.resources.Identifier.fromNamespaceAndPath("slsa", "board_toggle"));
-
-    public static final StreamCodec<RegistryFriendlyByteBuf, BoardTogglePayload> CODEC = StreamCodec.composite(
-            ByteBufCodecs.BOOL, BoardTogglePayload::enabled,
-            BoardTogglePayload::new
-    );
-
-    @Override
-    public CustomPacketPayload.Type<? extends CustomPacketPayload> type() {
-        return TYPE;
-    }
-
-    public static void register() {
-        net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry.clientboundPlay().register(TYPE, CODEC);
-    }
-}

src/main/java/com/github/zly2006/carpetslsaddition/util/BoardManager.java

@@ -4,6 +4,9 @@ import com.github.zly2006.carpetslsaddition.ServerMain;
 import net.minecraft.network.chat.Component;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.stats.ServerStatsCounter;
+import net.minecraft.stats.Stat;
+import net.minecraft.stats.Stats;
 import net.minecraft.world.scores.Objective;
 import net.minecraft.world.scores.ScoreAccess;
 import net.minecraft.world.scores.ScoreHolder;
@@ -13,12 +16,14 @@ import net.minecraft.world.scores.criteria.ObjectiveCriteria;
 /**
  * 死亡榜 / 挖掘榜的 scoreboard 管理器（服务端）。
  *
- * <ul>
+ * <p>数据源是 vanilla stats，但 stats 不会自动同步给其他客户端。
- *   <li>{@code sls_deaths}：使用原版 {@link ObjectiveCriteria#DEATH_COUNT} 判据，自动统计死亡次数。</li>
+ * 因此本类定期把 stats 的聚合值写入 scoreboard objective，
- *   <li>{@code sls_mined}：使用 {@link ObjectiveCriteria#DUMMY} 判据，由 {@code BoardEvents} 在破坏方块时写入。</li>
+ * 客户端再用原版计分板侧边栏显示（scoreboard 会自动同步给所有客户端）。
- * </ul>
  *
- * <p>objective 在服务器启动时自动创建；客户端会同步到这两个 objective，用于 HUD 显示。
+ * <ul>
+ *   <li>{@code sls_deaths}：死亡次数（DUMMY 判据，从 stats 的 {@link Stats#DEATHS} 写入）。</li>
+ *   <li>{@code sls_mined}：挖掘总数（DUMMY 判据，从 stats 的 {@link Stats#BLOCK_MINED} 聚合）。</li>
+ * </ul>
  */
 public final class BoardManager {
 
@@ -31,41 +36,54 @@ public final class BoardManager {
     public static void ensureObjectives(MinecraftServer server) {
         Scoreboard sb = server.getScoreboard();
         if (sb.getObjective(OBJ_DEATHS) == null) {
-            sb.addObjective(
+            sb.addObjective(OBJ_DEATHS, ObjectiveCriteria.DUMMY,
-                    OBJ_DEATHS,
+                    Component.literal("死亡榜"), ObjectiveCriteria.RenderType.INTEGER, true, null);
-                    ObjectiveCriteria.DEATH_COUNT,
-                    Component.literal("死亡榜"),
-                    ObjectiveCriteria.RenderType.INTEGER,
-                    true,
-                    null
-            );
             ServerMain.LOGGER.info("[SLSA] created scoreboard objective {}", OBJ_DEATHS);
         }
         if (sb.getObjective(OBJ_MINED) == null) {
-            sb.addObjective(
+            sb.addObjective(OBJ_MINED, ObjectiveCriteria.DUMMY,
-                    OBJ_MINED,
+                    Component.literal("挖掘榜"), ObjectiveCriteria.RenderType.INTEGER, true, null);
-                    ObjectiveCriteria.DUMMY,
-                    Component.literal("挖掘榜"),
-                    ObjectiveCriteria.RenderType.INTEGER,
-                    true,
-                    null
-            );
             ServerMain.LOGGER.info("[SLSA] created scoreboard objective {}", OBJ_MINED);
         }
     }
 
-    /** 玩家破坏一个方块 → 挖掘榜 +1。 */
+    /** 读取某玩家的挖掘总数（遍历 stats map 中 BLOCK_MINED 类型条目）。 */
-    public static void onBlockMined(ServerPlayer player, int count) {
+    private static int totalMined(ServerStatsCounter counter) {
-        MinecraftServer server = ServerMain.server;
+        int sum = 0;
-        if (server == null) {
+        for (Stat<?> stat : counter.stats.keySet()) {
-            return;
+            if (stat.getType() == Stats.BLOCK_MINED) {
+                sum += counter.getValue(stat);
             }
-        Scoreboard sb = server.getScoreboard();
+        }
-        Objective obj = sb.getObjective(OBJ_MINED);
+        return sum;
+    }
+
+    /** 读取某玩家的死亡次数。 */
+    private static int totalDeaths(ServerStatsCounter counter) {
+        return counter.getValue(Stats.CUSTOM, Stats.DEATHS);
+    }
+
+    /** 把一个分数写入 objective（若不存在则创建/更新）。 */
+    private static void setScore(Scoreboard sb, Objective obj, ServerPlayer player, int value) {
         if (obj == null) {
             return;
         }
         ScoreAccess access = sb.getOrCreatePlayerScore((ScoreHolder) player, obj);
-        access.add(count);
+        access.set(value);
+    }
+
+    /** 从 stats 同步所有在线玩家的分数到 scoreboard（定期调用）。 */
+    public static void syncScores(MinecraftServer server) {
+        Scoreboard sb = server.getScoreboard();
+        Objective deaths = sb.getObjective(OBJ_DEATHS);
+        Objective mined = sb.getObjective(OBJ_MINED);
+        if (deaths == null && mined == null) {
+            return;
+        }
+        for (ServerPlayer player : server.getPlayerList().getPlayers()) {
+            ServerStatsCounter counter = player.getStats();
+            setScore(sb, deaths, player, totalDeaths(counter));
+            setScore(sb, mined, player, totalMined(counter));
+        }
     }
 }

src/main/java/com/github/zly2006/carpetslsaddition/util/BoardSyncManager.java

@@ -1,114 +0,0 @@
-package com.github.zly2006.carpetslsaddition.util;
-
-import com.github.zly2006.carpetslsaddition.ServerMain;
-import com.github.zly2006.carpetslsaddition.net.BoardSyncPayload;
-import net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking;
-import net.minecraft.core.registries.BuiltInRegistries;
-import net.minecraft.server.MinecraftServer;
-import net.minecraft.server.level.ServerPlayer;
-import net.minecraft.stats.ServerStatsCounter;
-import net.minecraft.stats.Stat;
-import net.minecraft.stats.Stats;
-import net.minecraft.world.level.block.Block;
-
-import java.util.ArrayList;
-import java.util.Comparator;
-import java.util.List;
-
-/**
- * 服务端：读取玩家原版统计（挖掘/死亡），打包排行榜发给客户端。
- *
- * <p>数据源是 vanilla stats（{@code stats/<uuid>.json}），非 scoreboard。
- * 客户端原生拿不到别人的 stats，故由服务端读取后通过网络包 {@link BoardSyncPayload} 下发。
- */
-public final class BoardSyncManager {
-
-    private BoardSyncManager() {}
-
-    public static final String BOARD_DEATHS = "deaths";
-    public static final String BOARD_MINED = "mined";
-
-    /** 排行榜最多显示条目数。 */
-    public static final int TOP_N = 10;
-
-    /** 读取某玩家的挖掘总数（遍历该玩家的 stats，累加 BLOCK_MINED 类型条目）。 */
-    private static int totalMined(ServerStatsCounter counter) {
-        int sum = 0;
-        int cnt = 0;
-        for (Stat<?> stat : counter.stats.keySet()) {
-            if (stat.getType() == Stats.BLOCK_MINED) {
-                cnt++;
-                sum += counter.getValue(stat);
-            }
-        }
-        com.github.zly2006.carpetslsaddition.ServerMain.LOGGER.info("[SLSA-BOARD] totalMined: mapSize={} minedTypes={} sum={}", counter.stats.size(), cnt, sum);
-        return sum;
-    }
-    /** 读取某玩家的死亡次数。 */
-    private static int deaths(ServerStatsCounter counter) {
-        return counter.getValue(Stats.CUSTOM, Stats.DEATHS);
-    }
-
-    /** 构建某榜单的排行数据（降序，取前 TOP_N）。 */
-    public static List<BoardSyncPayload.Entry> buildBoard(MinecraftServer server, String board) {
-        List<BoardSyncPayload.Entry> list = new ArrayList<>();
-        for (ServerPlayer player : server.getPlayerList().getPlayers()) {
-            ServerStatsCounter counter = player.getStats();
-            int score = BOARD_MINED.equals(board) ? totalMined(counter) : deaths(counter);
-            if (score > 0) {
-                list.add(new BoardSyncPayload.Entry(player.getScoreboardName(), score));
-            }
-        }
-        list.sort(Comparator.comparingInt(BoardSyncPayload.Entry::score).reversed());
-        if (list.size() > TOP_N) {
-            return new ArrayList<>(list.subList(0, TOP_N));
-        }
-        return list;
-    }
-
-    /** 把两个榜单 + 开关状态同步给某玩家。 */
-    public static void syncTo(ServerPlayer player) {
-        MinecraftServer server = ServerMain.server;
-        if (server == null) {
-            return;
-        }
-        boolean enabled = com.github.zly2006.carpetslsaddition.SLSCarpetSettings.slsBoardEnabled;
-        // 先发开关状态
-        ServerPlayNetworking.send(player, new com.github.zly2006.carpetslsaddition.net.BoardTogglePayload(enabled));
-        if (!enabled) {
-            return;
-        }
-        List<BoardSyncPayload.Entry> d = buildBoard(server, BOARD_DEATHS);
-        List<BoardSyncPayload.Entry> m = buildBoard(server, BOARD_MINED);
-        com.github.zly2006.carpetslsaddition.ServerMain.LOGGER.info("[SLSA-BOARD] syncTo {} deaths={} mined={}", player.getScoreboardName(), d.size(), m.size());
-        ServerPlayNetworking.send(player, new BoardSyncPayload(BOARD_DEATHS, d));
-        ServerPlayNetworking.send(player, new BoardSyncPayload(BOARD_MINED, m));
-    }
-
-    /** 同步给所有在线玩家。 */
-    public static void syncToAll(MinecraftServer server) {
-        for (ServerPlayer player : server.getPlayerList().getPlayers()) {
-            syncTo(player);
-        }
-    }
-
-    private static volatile Boolean lastEnabled = null;
-    private static long lastSyncTick = 0;
-
-    /** 由轮询线程每秒调用：规则值变化时立即同步；否则每 5 秒定期同步一次数据。 */
-    public static void tick(MinecraftServer server) {
-        boolean now = com.github.zly2006.carpetslsaddition.SLSCarpetSettings.slsBoardEnabled;
-        if (lastEnabled == null || lastEnabled != now) {
-            lastEnabled = now;
-            syncToAll(server);
-            return;
-        }
-        if (now) {
-            long tick = server.getTickCount();
-            if (tick - lastSyncTick >= 100) {  // 每 100 tick（5秒）同步一次数据
-                lastSyncTick = tick;
-                syncToAll(server);
-            }
-        }
-    }
-}