{"mensaje":"🚀 Cambiaxo Backend funcionando","version":"1.0.0","estado":"OK","rutas":["POST /api/auth/register","POST /api/auth/login","GET  /api/auth/me","POST /api/orders/create","GET  /api/orders/market/:country","GET  /api/orders/my","POST /api/orders/:orderId/escrow","POST /api/orders/:orderId/confirm-payment","POST /api/orders/:orderId/release"]}