using System; using System.Collections.Generic; namespace API.DTOs.Progress; public sealed record ReadingSessionDto { public int Id { get; set; } public DateTime StartTimeUtc { get; set; } public DateTime? EndTimeUtc { get; set; } public bool IsActive { get; set; } = true; public IList ActivityData { get; set; } public int UserId { get; set; } public string Username { get; set; } }