Update dependencies and improve configuration management

- Updated LoLib dependency to version 3.0.0 in build.gradle.kts
- Added HikariCP and MySQL connector dependencies for improved database handling
- Enhanced jar minimization process to exclude JDBC pool and driver
- Refactored configuration management by introducing ConfigAccessor and ConfigLoader for better file handling and validation
- Removed deprecated GenerationOptions class and integrated its functionality into the new structure
- Improved command error handling and added cooldown hints for admin commands

src/main/java/dev/loki/loparkour/command/AdminCommandHandler.java

@@ -2,8 +2,6 @@ package dev.loki.loparkour.command;
 
 import dev.loki.loparkour.LoParkour;
 import dev.loki.loparkour.api.Registry;
-import dev.loki.loparkour.config.Locales;
-import dev.loki.loparkour.leaderboard.Leaderboard;
 import dev.loki.loparkour.menu.ParkourOption;
 import dev.loki.loparkour.mode.Mode;
 import dev.loki.loparkour.mode.Modes;
@@ -28,6 +26,8 @@ import java.util.UUID;
  */
 public class AdminCommandHandler {
 
+    private static final String COOLDOWN_HINT = "<gray>Please wait before using this again.";
+
     private final PlayerCommandHandler base;
 
     public AdminCommandHandler(PlayerCommandHandler base) {
@@ -56,6 +56,8 @@ public class AdminCommandHandler {
     // ── forcejoin ──────────────────────────────────────────────────────────────
 
     private void handleForceJoin(String target, CommandSender sender) {
+        if (!base.cooldown(sender, "forcejoin", 2500, COOLDOWN_HINT)) return;
+
         if (target.equalsIgnoreCase("everyone")) {
             Bukkit.getOnlinePlayers().forEach(p -> Modes.DEFAULT.create(p));
             send(sender, LoParkour.PREFIX + "Force joined everyone!");
@@ -76,6 +78,8 @@ public class AdminCommandHandler {
     // ── forceleave ─────────────────────────────────────────────────────────────
 
     private void handleForceLeave(String target, CommandSender sender) {
+        if (!base.cooldown(sender, "forceleave", 2500, COOLDOWN_HINT)) return;
+
         if (target.equalsIgnoreCase("everyone")) {
             ParkourPlayer.getPlayers().forEach(ParkourUser::leave);
             send(sender, LoParkour.PREFIX + "Force kicked everyone!");
@@ -91,7 +95,7 @@ public class AdminCommandHandler {
     // ── reset ──────────────────────────────────────────────────────────────────
 
     private void handleReset(String target, CommandSender sender) {
-        if (!base.cooldown(sender, "reset", 2500)) return;
+        if (!base.cooldown(sender, "reset", 2500, COOLDOWN_HINT)) return;
 
         if (target.equalsIgnoreCase("everyone")) {
             Registry.getModes().stream()
@@ -116,7 +120,7 @@ public class AdminCommandHandler {
     // ── recoverinventory ───────────────────────────────────────────────────────
 
     private void handleRecoverInventory(String target, CommandSender sender) {
-        if (!base.cooldown(sender, "recoverinventory", 2500)) return;
+        if (!base.cooldown(sender, "recoverinventory", 2500, COOLDOWN_HINT)) return;
         Player other = Bukkit.getPlayer(target);
         if (other == null) { send(sender, LoParkour.PREFIX + "Player not online!"); return; }
 
@@ -142,10 +146,17 @@ public class AdminCommandHandler {
             .orElse(null);
     }
 
+    @SuppressWarnings("deprecation") // Bukkit: name-based OfflinePlayer lookup (admin-only)
     private UUID resolveUUID(String input) {
         Player online = Bukkit.getPlayerExact(input);
         if (online != null) return online.getUniqueId();
-        if (input.contains("-")) return UUID.fromString(input);
+        if (input.contains("-")) {
+            try {
+                return UUID.fromString(input);
+            } catch (IllegalArgumentException ignored) {
+                // fall through to offline lookup by name
+            }
+        }
         return Bukkit.getOfflinePlayer(input).getUniqueId();
     }
 

src/main/java/dev/loki/loparkour/command/PlayerCommandHandler.java

@@ -60,7 +60,13 @@ public class PlayerCommandHandler {
             case "menu", "main" -> {
                 if (ParkourOption.MAIN.mayPerform(player)) Menus.MAIN.open(player);
             }
-            case "leaderboard" -> player.performCommand("LoParkour leaderboard invalid");
+            case "leaderboard" -> {
+                if (!ParkourOption.LEADERBOARDS.mayPerform(player)) {
+                    send(sender, Locales.getString(player, "other.no_do"));
+                    return;
+                }
+                Menus.LEADERBOARDS.open(player);
+            }
             case "schematic" -> {
                 if (!player.hasPermission(ParkourOption.ADMIN.permission)) {
                     send(sender, Locales.getString(player, "other.no_do"));
@@ -107,10 +113,22 @@ public class PlayerCommandHandler {
     }
 
     public boolean cooldown(CommandSender sender, String key, long millis) {
+        return cooldown(sender, key, millis, null);
+    }
+
+    /**
+     * @param whenBlocked message sent (MiniMessage color) if still on cooldown; may be null for silent block
+     */
+    public boolean cooldown(CommandSender sender, String key, long millis, @Nullable String whenBlocked) {
         String fullKey = sender.getName() + ":" + key;
         long now = System.currentTimeMillis();
         Long last = cooldowns.get(fullKey);
-        if (last != null && now - last < millis) return false;
+        if (last != null && now - last < millis) {
+            if (whenBlocked != null) {
+                send(sender, whenBlocked);
+            }
+            return false;
+        }
         cooldowns.put(fullKey, now);
         return true;
     }