namespace Auth.Models; public class RegisterRequest { public string Username { get; set; } = ""; public string Password { get; set; } = ""; public string? Email { get; set; } } public class LoginRequest { public string Username { get; set; } = ""; public string Password { get; set; } = ""; } public class ChangeRoleRequest { public string Username { get; set; } = ""; public string NewRole { get; set; } = ""; } public class RefreshRequest { public string Username { get; set; } = ""; public string RefreshToken { get; set; } = ""; }