{"message":"SmartLearning API Server","version":"1.0.0","endpoints":{"health":"/api/health","health_schema":"/api/health/schema","auth":"/api/auth","resources":"/api/resources","questions":"/api/questions","papers":"/api/papers","users":"/api/users","reviews":"/api/reviews","download":"/api/download"},"note":"前端应用运行在 http://localhost:3000"}