add:

更新

backend/IM_API/Domain/Events/UploadMergeEvent.cs

@@ -0,0 +1,13 @@
+using IM_API.Dtos;
+
+namespace IM_API.Domain.Events
+{
+    public record UploadMergeEvent : DomainEvent
+    {
+        public override string EventType => "IM.FILES_UPLOAD_MERGE";
+        public Guid TaskId { get; init; }
+        public List<UploadPartDto> Parts { get; init; }
+        public int ChunckCount { get; set; }
+        public string ObjectName { get; set; }
+    }
+}