namespace UniVerse.Domain.Entities; public class Course { public int Id { get; set; } public string Name { get; set; } = string.Empty; public string? Description { get; set; } public string? ExternalId { get; set; } public bool IsSynced { get; set; } public DateTime CreatedAt { get; set; } = DateTime.UtcNow; public DateTime UpdatedAt { get; set; } = DateTime.UtcNow; // Navigation properties public ICollection Lectures { get; set; } = new List(); public ICollection CourseTags { get; set; } = new List(); }