feat: new chain

app/Telegram/Middleware/OfficialBotOnly.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Telegram\Middleware;
+
+use App\Telegram\TelegramBotContext;
+use SergiX44\Nutgram\Nutgram;
+
+/** Blocks /transfer (and similar) on agent bots. */
+class OfficialBotOnly
+{
+    public function __invoke(Nutgram $bot, callable $next): mixed
+    {
+        if (! app(TelegramBotContext::class)->isOfficial()) {
+            $bot->sendMessage('⛔ /transfer 仅限官方系统群使用');
+
+            return null;
+        }
+
+        return $next($bot);
+    }
+}