chore: add debug log for wechat appid

@@ -77,6 +77,10 @@ $ws_worker->onWorkerStart = function ($worker) use ($config) {
     $ws_port = $config['server']['websocket_port'];
     echo "Relay Server Started on {$ws_host}:{$ws_port}\n";
 
+    // Debug: Check WeChat Config
+    $appId = $config['wechat']['app_id'] ?? 'Not Set';
+    echo "Loaded WeChat AppID: {$appId}\n";
+
     // Heartbeat check
     $check_interval = $config['heartbeat']['check_interval'];
     Timer::add($check_interval, function () use ($worker) {