feat: 新增/botall批量控制假人命令（sit/stand）

遍历所有isBot()为true的EntityPlayerMPFake，批量坐下/站起。重构SitCommand抽出sitPlayer公共方法。

src/main/java/com/github/zly2006/carpetslsaddition/command/BotAllCommand.java

@@ -0,0 +1,84 @@
+package com.github.zly2006.carpetslsaddition.command;
+
+import carpet.patches.EntityPlayerMPFake;
+import carpet.utils.Messenger;
+import com.github.zly2006.carpetslsaddition.SLSCarpetSettings;
+import com.github.zly2006.carpetslsaddition.util.access.SLSBotAccessor;
+import com.mojang.brigadier.CommandDispatcher;
+import com.mojang.brigadier.builder.LiteralArgumentBuilder;
+import net.minecraft.commands.CommandSourceStack;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.level.ServerPlayer;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static net.minecraft.commands.Commands.literal;
+
+/**
+ * /botall —— 批量控制本模组生成的所有假人。
+ *
+ * <p>与 {@link BotCommand} 的区别：{@code /bot <player>} 操作单个指定玩家，
+ * 而 {@code /botall} 操作所有由本模组（Carpet SLS Addition）生成的假人（即 isBot() 为 true 的 EntityPlayerMPFake）。
+ */
+public class BotAllCommand {
+
+    public static void register(CommandDispatcher<CommandSourceStack> dispatcher) {
+        LiteralArgumentBuilder<CommandSourceStack> command = literal("botall")
+                .requires(source -> source.hasPermission(4) || me.lucko.fabric.api.permissions.v0.Permissions.check(source, "slsaddition.command.bot"))
+                .then(literal("sit").executes(BotAllCommand::sitAll))
+                .then(literal("stand").executes(BotAllCommand::standAll));
+        dispatcher.register(command);
+    }
+
+    /** 收集所有本模组生成的假人。 */
+    private static List<ServerPlayer> collectBots(CommandSourceStack source) {
+        MinecraftServer server = source.getServer();
+        List<ServerPlayer> bots = new ArrayList<>();
+        for (ServerPlayer player : server.getPlayerList().getPlayers()) {
+            if (player instanceof EntityPlayerMPFake && ((SLSBotAccessor) player).carpet_SLS_Addition$isBot()) {
+                bots.add(player);
+            }
+        }
+        return bots;
+    }
+
+    /** 批量坐下。 */
+    private static int sitAll(com.mojang.brigadier.context.CommandContext<CommandSourceStack> context) {
+        if (!SLSCarpetSettings.canUseSitCommand) {
+            Messenger.m(context.getSource(), "r 坐下功能未启用（canUseSitCommand）");
+            return 0;
+        }
+        List<ServerPlayer> bots = collectBots(context.getSource());
+        int ok = 0;
+        for (ServerPlayer bot : bots) {
+            if (SitCommand.sitPlayer(bot)) {
+                ok++;
+            }
+        }
+        final int done = ok;
+        context.getSource().sendSuccess(
+                () -> net.minecraft.network.chat.Component.literal(
+                        "[SLSA] 已让 " + done + "/" + bots.size() + " 个假人坐下"),
+                false);
+        return ok;
+    }
+
+    /** 批量站起（下坐骑）。 */
+    private static int standAll(com.mojang.brigadier.context.CommandContext<CommandSourceStack> context) {
+        List<ServerPlayer> bots = collectBots(context.getSource());
+        int ok = 0;
+        for (ServerPlayer bot : bots) {
+            if (bot.getVehicle() != null) {
+                bot.stopRiding();
+                ok++;
+            }
+        }
+        final int done = ok;
+        context.getSource().sendSuccess(
+                () -> net.minecraft.network.chat.Component.literal(
+                        "[SLSA] 已让 " + done + "/" + bots.size() + " 个假人站起"),
+                false);
+        return ok;
+    }
+}