re-add ArchivedDate

src/Core/Vault/Entities/Cipher.cs

@@ -25,6 +25,9 @@ public class Cipher : ITableObject<Guid>, ICloneable
     public DateTime? DeletedDate { get; set; }
     public Enums.CipherRepromptType? Reprompt { get; set; }
     public string Key { get; set; }
+    // Deprecated. Left for backwards compatibility with old archive handling.
+    // Remove after all clients migrate to the Archives JSON column.
+    public DateTime? ArchivedDate { get; set; }
     public string Archives { get; set; }
 
     public void SetNewId()

src/Core/Vault/Models/Data/CipherDetails.cs

@@ -51,6 +51,7 @@ public class CipherDetailsWithCollections : CipherDetails
         Reprompt = cipher.Reprompt;
         Key = cipher.Key;
         FolderId = cipher.FolderId;
+        ArchivedDate = cipher.ArchivedDate;
         Favorite = cipher.Favorite;
         Edit = cipher.Edit;
         ViewPassword = cipher.ViewPassword;