新增3个功能：领地改名冷却、封禁名单联控、封禁广播警告

1. 领地改名冷却机制：1小时限5次，自然滚动窗口
   - AreaProtection: renameLand/renameCooldownMap/getRenameCooldown/getRemainingRenames
   - CLI: /protect cli rename <领地名> 交互式输入
   - GUI: Name Tag按钮（slot 33）显示冷却状态
   - 改名更新DB+内存+触发PHP同步

2. PHP用户管理显示封禁名单（联控Java BanList）
   - WebManager.syncBans(): 收集Bukkit名字/IP封禁→推送到PHP
   - PHP: web_player_bans表 + handleSyncBans + list_bans API
   - admin.php: 用户行红色+禁图标标注被封禁玩家

3. 封禁事件公屏广播警告
   - Main.applyBan(): 封禁后自动广播
   - broadcastBanWarning(): 玩家名+IP(如IP封禁)+理由+到期时间
   - loadBanWarningMessage(): 从释放警告消息.txt随机读取标语
   - 支持永久封禁/限时封禁/IP封禁3种场景

src/main/java/Sdf1_login/AreaCLIManager.java

@@ -70,7 +70,7 @@ public class AreaCLIManager {
         return Component.text(text).color(color);
     }
 
-    private Component header(String title) {
+    public static Component header(String title) {
         return Component.text("\n§6§l═══════ " + title + " ═══════\n");
     }
 
@@ -336,6 +336,19 @@ public class AreaCLIManager {
         // ★ 新增：领地公告管理
         p.sendMessage(clickableAction("📢", "领地公告（进出提示消息）",
                 "/protect cli announcement " + land.name + " 1"));
+        // ★ 新增：领地改名
+        long[] cooldown = areaProtect.getRenameCooldown(p);
+        String renameHint;
+        if (cooldown != null) {
+            long remainMin = cooldown[0] / 60;
+            long remainSecR = cooldown[0] % 60;
+            renameHint = "§c冷却中（已用" + cooldown[1] + "/" + 5 + "次，"
+                    + remainMin + "分" + remainSecR + "秒后解锁）";
+        } else {
+            renameHint = "§a点击输入新名字（1小时限5次）";
+        }
+        p.sendMessage(clickableAction("✏️", "领地改名",
+                "/protect cli rename " + land.name));
 
         p.sendMessage(Component.empty()
                 .append(Component.text("§a[◀ 返回列表]")

src/main/java/Sdf1_login/AreaGUIManager.java

@@ -245,6 +245,19 @@ public class AreaGUIManager implements Listener {
                 "§7将领地所有权转移给他人",
                 "§7需要有领地所有者权限"));
 
+        // 领地改名（位置33）
+        long[] cd = areaProtect.getRenameCooldown(p);
+        String renameLore;
+        if (cd != null) {
+            long rm = cd[0] / 60;
+            long rs = cd[0] % 60;
+            renameLore = "§c冷却中（已用" + cd[1] + "/5次）\n§c" + rm + "分" + rs + "秒后解锁";
+        } else {
+            renameLore = "§7剩余次数: §a" + areaProtect.getRemainingRenames(p) + "/5\n§71小时限5次，自然滚动窗口";
+        }
+        inv.setItem(33, createItem(Material.NAME_TAG, "§e§l领地改名",
+                renameLore, "", "§e点击输入新名字"));
+
         // 返回按钮（位置48）
         inv.setItem(48, createItem(Material.ARROW, "§c§l返回领地列表", ""));
 
@@ -941,6 +954,22 @@ public class AreaGUIManager implements Listener {
             } else if (raw == 32) {
                 // 过户领地
                 openTransferLandPanel(p, landName);
+            } else if (raw == 33) {
+                // ★ 领地改名
+                p.closeInventory();
+                areaProtect.pendingEffectInput.put(p.getUniqueId(),
+                        new String[]{landName, "rename_land"});
+                p.sendMessage(AreaCLIManager.header("领地改名: " + landName));
+                long[] cooldownInfo = areaProtect.getRenameCooldown(p);
+                if (cooldownInfo != null) {
+                    long rm = cooldownInfo[0] / 60;
+                    long rs = cooldownInfo[0] % 60;
+                    p.sendMessage("§c冷却中！已用" + cooldownInfo[1] + "/5次，" + rm + "分" + rs + "秒后解锁");
+                } else {
+                    p.sendMessage("§7剩余次数: §a" + areaProtect.getRemainingRenames(p) + "/5");
+                }
+                p.sendMessage("§e请在聊天栏输入新的领地名:");
+                p.sendMessage("§7输入 §c取消 §7放弃修改");
             } else if (raw == 31) {
                 // 传送 - 优先传送点，否则安全搜索中心
                 p.closeInventory();

src/main/java/Sdf1_login/AreaProtection.java

@@ -101,11 +101,15 @@ public class AreaProtection implements Listener {
     // ★ 添加成员输入等待：UUID → 领地名
     private final Map<java.util.UUID, String> pendingAddMemberInput = new ConcurrentHashMap<>();
     // ★ 效果管理待处理输入：UUID → [landName, inputType]
-    private final Map<java.util.UUID, String[]> pendingEffectInput = new ConcurrentHashMap<>();
+    public final Map<java.util.UUID, String[]> pendingEffectInput = new ConcurrentHashMap<>();
     // ★ 过户领地待输入新所有者：UUID → [landName]
     public final Map<java.util.UUID, String[]> pendingTransferInput = new ConcurrentHashMap<>();
     // ★ 用户组配置编辑待输入：UUID → [groupName, field("price"|"maxlands"|"priority")]
     public final Map<java.util.UUID, String[]> pendingGroupEditInput = new ConcurrentHashMap<>();
+    // ★ 领地改名冷却：UUID → 改名时间戳列表（自然滚动窗口，1小时限5次）
+    private final Map<java.util.UUID, java.util.List<Long>> renameCooldownMap = new ConcurrentHashMap<>();
+    private static final int RENAME_LIMIT = 5;
+    private static final long RENAME_WINDOW_MS = 3600_000L; // 1小时
 
     // ★ 全局配置默认值
     private int globalCreatePricePerSqm = 10;  // 每㎡创建价格
@@ -6271,6 +6275,42 @@ public class AreaProtection implements Listener {
                     }
                     plugin.areaCLIManager.showAnnouncementManagement(p, args[2], annPage);
                     break;
+                case "rename":
+                    // ★ 领地改名（交互式输入）
+                    if (args.length < 3) {
+                        p.sendMessage("§c用法: /protect cli rename <领地名>");
+                        break;
+                    }
+                    {
+                        String rnLandName = args[2];
+                        AreaConfig rnAc = getLand(rnLandName);
+                        if (rnAc == null) {
+                            p.sendMessage("§c领地不存在: " + rnLandName);
+                            break;
+                        }
+                        boolean rnOwner = p.getName().equalsIgnoreCase(rnAc.owner);
+                        boolean rnAdmin = isAreaAdmin(p);
+                        if (!rnOwner && !rnAdmin) {
+                            p.sendMessage("§c需要领地所有者或管理员权限");
+                            break;
+                        }
+                        // 设置等待输入状态
+                        pendingEffectInput.put(p.getUniqueId(),
+                                new String[]{rnLandName, "rename_land"});
+                        p.sendMessage(AreaCLIManager.header("领地改名: " + rnLandName));
+                        long[] cd = getRenameCooldown(p);
+                        if (cd != null) {
+                            long rm = cd[0] / 60;
+                            long rs = cd[0] % 60;
+                            p.sendMessage(Component.text("§c冷却中！已用" + cd[1] + "/" + RENAME_LIMIT + "次，"
+                                    + rm + "分" + rs + "秒后解锁"));
+                        } else {
+                            p.sendMessage(Component.text("§7剩余次数: §a" + getRemainingRenames(p) + "/" + RENAME_LIMIT));
+                        }
+                        p.sendMessage(Component.text("§e请在聊天栏输入新的领地名:"));
+                        p.sendMessage(Component.text("§7输入 §c取消 §7放弃修改"));
+                    }
+                    break;
                 case "create":
                     // 跳转到创建命令
                     // 直接转发
@@ -8896,6 +8936,120 @@ public class AreaProtection implements Listener {
         }
     }
 
+    /**
+     * ★ 领地改名（带冷却检查）
+     * @return null=成功, 非null=错误/冷却信息
+     */
+    public String renameLand(Player p, String oldName, String newName) {
+        // 1. 基本校验
+        if (newName == null || newName.trim().isEmpty()) return "新名字不能为空";
+        newName = newName.trim();
+        if (newName.length() > 20) return "名字不能超过20个字符";
+        if (newName.contains(" ") || newName.contains("§")) return "名字不能包含空格或颜色代码";
+        if (newName.equalsIgnoreCase(oldName)) return "新名字和旧名字相同";
+
+        // 2. 重名检查
+        if (getLand(newName) != null) return "已存在同名领地: " + newName;
+
+        // 3. 冷却检查
+        long now = System.currentTimeMillis();
+        java.util.List<Long> timestamps = renameCooldownMap.computeIfAbsent(
+                p.getUniqueId(), k -> new java.util.ArrayList<>());
+
+        // 清除过期记录（超出1小时窗口的）
+        timestamps.removeIf(t -> now - t > RENAME_WINDOW_MS);
+
+        if (timestamps.size() >= RENAME_LIMIT) {
+            long firstInWindow = timestamps.get(0);
+            long unlockTime = firstInWindow + RENAME_WINDOW_MS;
+            long remainSec = (unlockTime - now) / 1000;
+            long remainMin = remainSec / 60;
+            long remainSecR = remainSec % 60;
+            return "改名冷却中！本小时已改名" + RENAME_LIMIT + "次，"
+                    + remainMin + "分" + remainSecR + "秒后解锁";
+        }
+
+        // 4. 执行改名
+        try {
+            if (dbConnection == null || dbConnection.isClosed()) return "数据库未连接";
+
+            // 4a. 更新 area_lands 表的 name
+            PreparedStatement ps = dbConnection.prepareStatement(
+                    "UPDATE area_lands SET name = ? WHERE name = ?");
+            ps.setString(1, newName);
+            ps.setString(2, oldName);
+            int affected = ps.executeUpdate();
+            ps.close();
+
+            if (affected <= 0) return "数据库中未找到领地: " + oldName;
+
+            // 4b. 更新 area_land_permissions 表的 land_id（如果用name关联）
+            // land_id 是 area_lands 的自增 id，改名不影响 id，所以无需更新
+
+            // 4c. 更新内存
+            AreaConfig ac = areas.remove(oldName);
+            if (ac != null) {
+                ac.name = newName;
+                areas.put(newName, ac);
+            }
+
+            // 4d. 更新内存中的成员权限缓存等（如果有以旧名字为key的缓存）
+            // areaPlayerWhitelist 也以 landName 为 key，需同步
+            java.util.Set<String> whitelist = areaPlayerWhitelist.remove(oldName);
+            if (whitelist != null) {
+                areaPlayerWhitelist.put(newName, whitelist);
+            }
+
+            // 4e. 记录冷却
+            timestamps.add(now);
+
+            // 4f. 触发PHP同步
+            try {
+                plugin.webManager.syncLandData();
+            } catch (Exception ignored) {}
+
+            plugin.getLogger().info("[防护] 领地改名: " + oldName + " → " + newName + " (by " + p.getName() + ")");
+            return null; // 成功
+        } catch (SQLException e) {
+            plugin.getLogger().warning("[防护] 领地改名失败: " + e.getMessage());
+            return "数据库错误: " + e.getMessage();
+        }
+    }
+
+    /**
+     * ★ 获取改名冷却信息（用于显示在菜单中）
+     * @return [剩余秒数, 已用次数] 或 null（无冷却）
+     */
+    public long[] getRenameCooldown(Player p) {
+        long now = System.currentTimeMillis();
+        java.util.List<Long> timestamps = renameCooldownMap.get(p.getUniqueId());
+        if (timestamps == null || timestamps.isEmpty()) return null;
+
+        // 清除过期
+        timestamps.removeIf(t -> now - t > RENAME_WINDOW_MS);
+
+        int used = timestamps.size();
+        if (used == 0) return null;
+
+        long firstInWindow = timestamps.get(0);
+        long unlockTime = firstInWindow + RENAME_WINDOW_MS;
+        if (now >= unlockTime) return null; // 已解锁
+
+        long remainSec = (unlockTime - now) / 1000;
+        return new long[]{remainSec, used};
+    }
+
+    /**
+     * 获取剩余改名次数
+     */
+    public int getRemainingRenames(Player p) {
+        long now = System.currentTimeMillis();
+        java.util.List<Long> timestamps = renameCooldownMap.get(p.getUniqueId());
+        if (timestamps == null) return RENAME_LIMIT;
+        timestamps.removeIf(t -> now - t > RENAME_WINDOW_MS);
+        return Math.max(0, RENAME_LIMIT - timestamps.size());
+    }
+
     /**
      * 将 PHP 端同步过来的单个字段值直接写入内存 AreaConfig 对象
      */
@@ -9467,6 +9621,24 @@ public class AreaProtection implements Listener {
             }
             saveAreaToDb(land);
             if (plugin.areaCLIManager != null) plugin.areaCLIManager.showEffectsManagement(p, landName, 3);
+        } else if ("rename_land".equals(inputType)) {
+            // ★ 领地改名输入处理
+            if (message.trim().equals("取消") || message.trim().equals("0")) {
+                p.sendMessage(Component.text("§e已取消改名，保持原样"));
+                if (plugin.areaCLIManager != null) plugin.areaCLIManager.showLandManage(p, landName, 1);
+                return true;
+            }
+            String newName = message.trim();
+            String error = renameLand(p, landName, newName);
+            if (error != null) {
+                p.sendMessage(Component.text("§c改名失败: " + error));
+                p.sendMessage(Component.text("§7请重新输入（或输入 §c取消§7）"));
+                pendingEffectInput.put(p.getUniqueId(), new String[]{landName, "rename_land"});
+                return true;
+            }
+            p.sendMessage(Component.text("§a✓ 领地已改名: §f" + landName + " §a→ §f" + newName));
+            if (plugin.areaCLIManager != null) plugin.areaCLIManager.showLandManage(p, newName, 1);
+            return true;
         }
 
         // 刷新GUI，回到原来的subPage（必须切主线程）

src/main/java/Sdf1_login/Main.java

@@ -1033,6 +1033,103 @@ public class Main extends JavaPlugin
         Bukkit.getBanList(type).addBan(target, reason,
                 expireMs == null ? null : new java.util.Date(expireMs),
                 sender.getName());
+
+        // ★ 公屏广播封禁警告
+        broadcastBanWarning(target, type, reason, expireMs, sender.getName());
+    }
+
+    /**
+     * ★ 封禁事件公屏广播警告
+     * 从"释放警告消息.txt"读取随机标语，结合封禁信息发送给全服
+     */
+    private void broadcastBanWarning(String target, org.bukkit.BanList.Type type,
+                                     String reason, Long expireMs, String adminName) {
+        try {
+            // 确定封禁类型描述
+            boolean isIpBan = (type == org.bukkit.BanList.Type.IP);
+            boolean isPerm = (expireMs == null);
+
+            // 如果是IP封禁，获取被封IP对应的在线玩家名
+            String displayTarget = target;
+            String ipInfo = "";
+            if (isIpBan) {
+                // IP封禁：target是IP，尝试查找对应玩家
+                for (org.bukkit.entity.Player p : Bukkit.getOnlinePlayers()) {
+                    if (p.getAddress() != null && p.getAddress().getAddress() != null) {
+                        String playerIp = p.getAddress().getAddress().getHostAddress();
+                        if (target.equals(playerIp)) {
+                            displayTarget = p.getName();
+                            ipInfo = ",IP: " + target;
+                            break;
+                        }
+                    }
+                }
+                if (displayTarget.equals(target)) {
+                    // 没找到在线玩家，直接用IP
+                    ipInfo = ",IP: " + target;
+                }
+            }
+
+            // 构建封禁描述
+            String banDesc;
+            if (isIpBan) {
+                banDesc = "被永久封禁IP";
+            } else if (isPerm) {
+                banDesc = "被终身封禁";
+            } else {
+                banDesc = "被封禁至" + new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm").format(new java.util.Date(expireMs));
+            }
+
+            // 读取警告标语
+            String warningLine = loadBanWarningMessage();
+
+            // 构建消息
+            String msg = "§c§l⚠ " + displayTarget + ipInfo + "因违反服务器规则" + banDesc + "。";
+            if (reason != null && !reason.isEmpty() && !reason.startsWith("§")) {
+                msg += "§r§7理由: " + reason + "。";
+            }
+            msg += "§r§c" + warningLine;
+
+            // 广播
+            for (org.bukkit.entity.Player online : Bukkit.getOnlinePlayers()) {
+                online.sendMessage(msg);
+            }
+            // 控制台也打印
+            getLogger().info("[封禁广播] " + msg.replaceAll("§[0-9a-fk-orA-FK-OR]", ""));
+        } catch (Exception e) {
+            getLogger().warning("[封禁广播] 异常: " + e.getMessage());
+        }
+    }
+
+    /**
+     * 从"释放警告消息.txt"读取随机标语
+     */
+    private String loadBanWarningMessage() {
+        try {
+            java.io.File file = new java.io.File(getDataFolder(), "释放警告消息.txt");
+            if (!file.exists()) {
+                // 创建默认文件
+                getDataFolder().mkdirs();
+                java.io.FileWriter fw = new java.io.FileWriter(file);
+                fw.write("请大家引以为戒，务必遵守服务器规则。\n");
+                fw.write("请大家务必遵守服务器规则，切勿以身试险。\n");
+                fw.write("请大家务必遵守规则，注意一言一行。\n");
+                fw.close();
+            }
+            java.util.List<String> lines = new java.util.ArrayList<>();
+            java.io.BufferedReader br = new java.io.BufferedReader(
+                    new java.io.InputStreamReader(new java.io.FileInputStream(file), java.nio.charset.StandardCharsets.UTF_8));
+            String line;
+            while ((line = br.readLine()) != null) {
+                line = line.trim();
+                if (!line.isEmpty()) lines.add(line);
+            }
+            br.close();
+            if (lines.isEmpty()) return "请大家遵守服务器规则。";
+            return lines.get(new java.util.Random().nextInt(lines.size()));
+        } catch (Exception e) {
+            return "请大家遵守服务器规则。";
+        }
     }
 
     /** 临时封禁（名字或IP），由 /tempban 与 /tempbanip 共用 */

src/main/java/Sdf1_login/WebManager.java

@@ -3343,6 +3343,9 @@ public class WebManager {
             // 4. 同步成员权限数据（area_land_permissions → web_area_permissions）
             syncPermissions(areaProtect);
 
+            // 5. 同步封禁名单到PHP
+            syncBans();
+
             // 5. ★ 同步插件管理员列表到PHP
             syncAdmins();
 
@@ -3488,6 +3491,63 @@ public class WebManager {
         }
     }
 
+    /**
+     * ★ 同步封禁名单到PHP（供用户管理页面显示封禁状态）
+     */
+    private void syncBans() {
+        if (!enabled) return;
+        try {
+            org.bukkit.BanList nameBanList = Bukkit.getBanList(org.bukkit.BanList.Type.NAME);
+            org.bukkit.BanList ipBanList = Bukkit.getBanList(org.bukkit.BanList.Type.IP);
+
+            StringBuilder sb = new StringBuilder("[");
+            boolean first = true;
+
+            // 名字封禁
+            @SuppressWarnings("unchecked")
+            Set<org.bukkit.BanEntry<?>> nameEntries = (Set<org.bukkit.BanEntry<?>>)(Set<?>) nameBanList.getEntries();
+            for (org.bukkit.BanEntry<?> entry : nameEntries) {
+                if (!first) sb.append(",");
+                first = false;
+                String target = entry.getTarget();
+                String reason = entry.getReason() != null ? entry.getReason() : "";
+                String source = entry.getSource() != null ? entry.getSource() : "";
+                long expireDate = entry.getExpiration() != null ? entry.getExpiration().getTime() : 0;
+                sb.append("{\"type\":\"name\",\"target\":\"").append(escapeJson(target))
+                  .append("\",\"reason\":\"").append(escapeJson(reason))
+                  .append("\",\"source\":\"").append(escapeJson(source))
+                  .append("\",\"expire\":").append(expireDate).append("}");
+            }
+
+            // IP封禁
+            @SuppressWarnings("unchecked")
+            Set<org.bukkit.BanEntry<?>> ipEntries = (Set<org.bukkit.BanEntry<?>>)(Set<?>) ipBanList.getEntries();
+            for (org.bukkit.BanEntry<?> entry : ipEntries) {
+                if (!first) sb.append(",");
+                first = false;
+                String target = entry.getTarget();
+                String reason = entry.getReason() != null ? entry.getReason() : "";
+                String source = entry.getSource() != null ? entry.getSource() : "";
+                long expireDate = entry.getExpiration() != null ? entry.getExpiration().getTime() : 0;
+                sb.append("{\"type\":\"ip\",\"target\":\"").append(escapeJson(target))
+                  .append("\",\"reason\":\"").append(escapeJson(reason))
+                  .append("\",\"source\":\"").append(escapeJson(source))
+                  .append("\",\"expire\":").append(expireDate).append("}");
+            }
+
+            sb.append("]");
+
+            Map<String, String> params = new LinkedHashMap<>();
+            params.put("action", "sync_bans");
+            params.put("secret", secretKey);
+            params.put("bans", sb.toString());
+            String resp = httpGet("api/sync.php", params);
+            plugin.getLogger().fine("[防护-sync] 封禁名单同步: " + resp);
+        } catch (Exception e) {
+            plugin.getLogger().warning("[防护-sync] 封禁名单同步异常: " + e.getMessage());
+        }
+    }
+
     /**
      * ★ 从PHP拉取用户组配置到Java本地
      * PHP管理后台创建的用户组通过此方法同步到Java