Add XML documentation to Premium in OrganizationUserUserDetails and User classes

src/Core/AdminConsole/Models/Data/Organizations/OrganizationUsers/OrganizationUserUserDetails.cs

@@ -20,6 +20,10 @@ public class OrganizationUserUserDetails : IExternal, ITwoFactorProvidersUser, I
     public string Email { get; set; }
     public string AvatarColor { get; set; }
     public string TwoFactorProviders { get; set; }
+    /// <summary>
+    /// User's personal premium subscription status. Does not reflect organization premium access.
+    /// Null when the organization user is in Invited status (UserId is null).
+    /// </summary>
     public bool? Premium { get; set; }
     public OrganizationUserStatusType Status { get; set; }
     public OrganizationUserType Type { get; set; }

src/Core/Entities/User.cs

@@ -69,6 +69,10 @@ public class User : ITableObject<Guid>, IStorableSubscriber, IRevisable, ITwoFac
     /// The security state is a signed object attesting to the version of the user's account.
     /// </summary>
     public string? SecurityState { get; set; }
+    /// <summary>
+    /// Indicates whether the user has a personal premium subscription.
+    /// Does not include premium access from organizations.
+    /// </summary>
     public bool Premium { get; set; }
     public DateTime? PremiumExpirationDate { get; set; }
     public DateTime? RenewalReminderDate { get; set; }