Документирование и небольшой рефакторинг модели.

Pf2eModel/Model/Structure/Background.cs

@@ -1,24 +1,40 @@
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
+using Microsoft.EntityFrameworkCore;
 using Pf2eModel.Model.Base;
 using Pf2eModel.Model.Enum;
 using Pf2eModel.Model.Structure.BackgroundRelation;
 
 namespace Pf2eModel.Model.Structure;
 
+/// <summary>
+/// Предыстория.
+/// </summary>
 [EntityOfType(EntityType.Background)]
 public class Background : IEntity
 {
+    /// <inheritdoc/>
     [Key]
     [DatabaseGenerated(DatabaseGeneratedOption.None)]
     [Column(Order = 1)]
+    [Comment("Идентификатор")]
     public int Id { get; set; }
 
+    /// <inheritdoc/>
     public Entity Entity { get; set; } = null!;
 
+    /// <summary>
+    /// Аттрибуты предыстории.
+    /// </summary>
     public ICollection<BackgroundBoost> BackgroundBoosts { get; set; } = [];
 
+    /// <summary>
+    /// Способности предыстории.
+    /// </summary>
     public ICollection<BackgroundItem> BackgroundItems { get; set; } = [];
 
+    /// <summary>
+    /// Навыки предыстории.
+    /// </summary>
     public ICollection<BackgroundTraining> BackgroundSkills { get; set; } = [];
 }