chore: improve help command

src/main/kotlin/cn/rtast/fancybot/commands/HelpCommand.kt

@@ -12,6 +12,7 @@ import cn.rtast.fancybot.commands
 import cn.rtast.rob.entity.GroupMessage
 import cn.rtast.rob.util.BaseCommand
 import cn.rtast.rob.util.ob.MessageChain
+import cn.rtast.rob.util.ob.NodeMessageChain
 import cn.rtast.rob.util.ob.OneBotListener
 import kotlin.reflect.full.findAnnotation
 import kotlin.reflect.full.hasAnnotation
@@ -21,6 +22,7 @@ class HelpCommand : BaseCommand() {
     override val commandNames = listOf("/help", "/帮助")
 
     override suspend fun executeGroup(listener: OneBotListener, message: GroupMessage, args: List<String>) {
+        val node = NodeMessageChain.Builder()
         val msg = MessageChain.Builder()
         commands.sortedBy { it::class.simpleName }.forEach {
             val description = if (!it::class.hasAnnotation<CommandDescription>()) "暂无描述"
@@ -30,6 +32,8 @@ class HelpCommand : BaseCommand() {
             msg.addText("[$commandName] [$description] 命令: $commandNames")
                 .addNewLine()
         }
-        message.reply(msg.build())
+        msg.addText("共计${commands.size}条命令")
+        node.addMessageChain(msg.build(), message.sender.userId)
+        message.reply(node.build())
     }
 }