add refillcore and fix help

src/main/java/me/chayapak1/chomens_bot/commands/HelpCommand.java

@@ -98,11 +98,10 @@ public class HelpCommand implements Command {
 
         final String prefix = bot.chatCommandHandler().prefix();
 
-        final String commandName = args[0];
-
         for (Command command : bot.commandHandler().commands()) {
-            if (!command.name().equals(commandName) && !command.alias().contains(commandName)) continue;
+            if (!command.name().equals(args[0]) && !command.alias().contains(args[0])) continue;
 
+            final String commandName = command.name();
             final List<Component> usages = new ArrayList<>();
 
             usages.add(

src/main/java/me/chayapak1/chomens_bot/commands/RefillCoreCommand.java

@@ -0,0 +1,44 @@
+package me.chayapak1.chomens_bot.commands;
+
+import me.chayapak1.chomens_bot.Bot;
+import me.chayapak1.chomens_bot.command.Command;
+import me.chayapak1.chomens_bot.command.CommandContext;
+import net.kyori.adventure.text.Component;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class RefillCoreCommand implements Command {
+    public String name() { return "refillcore"; }
+
+    public String description() {
+        return "Refills and resets the bot's command core";
+    }
+
+    public List<String> usage() {
+        final List<String> usages = new ArrayList<>();
+        usages.add("");
+
+        return usages;
+    }
+
+    public List<String> alias() {
+        final List<String> aliases = new ArrayList<>();
+        aliases.add("rc");
+
+        return aliases;
+    }
+
+    public int trustLevel() {
+        return 0;
+    }
+
+    public Component execute(CommandContext context, String[] args, String[] fullArgs) {
+        final Bot bot = context.bot();
+
+        bot.core().reset();
+        bot.core().refill();
+
+        return Component.text("success");
+    }
+}

src/main/java/me/chayapak1/chomens_bot/plugins/CommandHandlerPlugin.java

@@ -32,6 +32,7 @@ public class CommandHandlerPlugin {
         registerCommand(new BotVisibilityCommand());
         registerCommand(new TPSBarCommand());
         registerCommand(new NetMessageCommand());
+        registerCommand(new RefillCoreCommand());
     }
 
     public void registerCommand (Command command) {

src/main/java/me/chayapak1/chomens_bot/plugins/CorePlugin.java

@@ -127,6 +127,10 @@ public class CorePlugin extends PositionPlugin.PositionListener {
         }
     }
 
+    public void reset () {
+        relativeCorePosition = Vector3i.from(coreStart);
+    }
+
     public void refill () {
         final String command = String.format(
                 "minecraft:fill %s %s %s %s %s %s minecraft:command_block{CustomName:'%s'}",