public class DraftObservation { public Guid Id { get; set; } public Guid BatchId { get; set; } public string ObservationCode { get; set; } = null!; public decimal Value { get; set; } public string Unit { get; set; } = null!; public DateTimeOffset RecordedAt { get; set; } public string? Note { get; set; } public DateTimeOffset CreatedAt { get; set; } public DigitizationBatch Batch { get; set; } = null!; }