Init

Prefab/Data/Entities/AuditLog.cs

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+using Prefab.Domain.Common;
+
+namespace Prefab.Data.Entities;
+
+/// <summary>
+/// Represents an audit log entry that captures an entity state transition.
+/// </summary>
+public class AuditLog : Entity<int>, ICreated
+{
+    /// <summary>
+    /// Gets or sets the correlation identifier tying related audit events together.
+    /// </summary>
+    public Guid CorrelationId { get; set; }
+
+    /// <summary>
+    /// Gets or sets the fully qualified entity name that generated the audit record.
+    /// </summary>
+    public string Entity { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Gets or sets the serialized state of the entity when the audit was captured.
+    /// </summary>
+    public string State { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Gets or sets the collection of field-level changes associated with the audit.
+    /// </summary>
+    public virtual ICollection<AuditLogItem> Items { get; set; } = new List<AuditLogItem>();
+
+    /// <summary>
+    /// Gets or sets the identifier of the user who triggered the change.
+    /// </summary>
+    public Guid CreatedBy { get; set; }
+
+    /// <summary>
+    /// Gets or sets the timestamp when the change occurred.
+    /// </summary>
+    public DateTimeOffset CreatedOn { get; set; }
+}

Prefab/Data/Entities/AuditLogItem.cs

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+using Prefab.Domain.Common;
+
+namespace Prefab.Data.Entities;
+
+/// <summary>
+/// Represents a field-level change within an audit log entry.
+/// </summary>
+public class AuditLogItem : Entity<int>
+{
+    /// <summary>
+    /// Gets or sets the parent audit log identifier.
+    /// </summary>
+    public int AuditLogId { get; set; }
+
+    /// <summary>
+    /// Gets or sets the property name that changed.
+    /// </summary>
+    public string Property { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Gets or sets the previous serialized value.
+    /// </summary>
+    public string? OldValue { get; set; }
+
+    /// <summary>
+    /// Gets or sets the new serialized value.
+    /// </summary>
+    public string? NewValue { get; set; }
+
+    /// <summary>
+    /// Gets or sets the navigation back to the owning audit log.
+    /// </summary>
+    public virtual AuditLog AuditLog { get; set; } = null!;
+}

Prefab/Data/Entities/GenericAttribute.cs

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+using Prefab.Domain.Common;
+
+namespace Prefab.Data.Entities;
+
+/// <summary>
+/// Represents a persisted generic attribute for an entity.
+/// </summary>
+public class GenericAttribute : EntityWithAuditAndStatus<int>
+{
+    /// <summary>
+    /// Gets or sets the owning entity identifier.
+    /// </summary>
+    public Guid EntityId { get; set; }
+
+    /// <summary>
+    /// Gets or sets the logical group used to partition attributes by entity type.
+    /// </summary>
+    public string KeyGroup { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Gets or sets the attribute key.
+    /// </summary>
+    public string Key { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Gets or sets the fully qualified type name of the serialized value.
+    /// </summary>
+    public string Type { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Gets or sets the serialized attribute value.
+    /// </summary>
+    public string Value { get; set; } = string.Empty;
+}

Prefab/Data/Entities/SeederLog.cs

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+using Prefab.Domain.Common;
+
+namespace Prefab.Data.Entities;
+
+/// <summary>
+/// Captures metadata about seeder executions to prevent duplicate runs.
+/// </summary>
+public class SeederLog : Entity<int>
+{
+    /// <summary>
+    /// Gets the seeder identifier.
+    /// </summary>
+    public string SeederName { get; init; } = string.Empty;
+
+    /// <summary>
+    /// Gets the run mode (e.g., Development or Production) used for the execution.
+    /// </summary>
+    public string RunMode { get; init; } = string.Empty;
+
+    /// <summary>
+    /// Gets the timestamp when the seeder completed.
+    /// </summary>
+    public DateTime RunAt { get; init; }
+}