Add WAL file for database and log instance deployment failures

OTSSignsOrchestrator.Core/Models/Entities/OperationLog.cs

@@ -1,5 +1,4 @@
 using System.ComponentModel.DataAnnotations;
-using System.ComponentModel.DataAnnotations.Schema;
 
 namespace OTSSignsOrchestrator.Core.Models.Entities;
 
@@ -28,10 +27,9 @@ public class OperationLog
 
     public OperationType Operation { get; set; }
 
-    public Guid? InstanceId { get; set; }
-
-    [ForeignKey(nameof(InstanceId))]
-    public CmsInstance? Instance { get; set; }
+    /// <summary>Name of the Docker stack this operation relates to (e.g. "acm-cms-stack").</summary>
+    [MaxLength(150)]
+    public string? StackName { get; set; }
 
     [MaxLength(200)]
     public string? UserId { get; set; }