支持后台转移发布所有权

backend/internal/modules/listing/mutation.go

@@ -63,7 +63,7 @@ func (r *Repository) Create(ctx context.Context, ownerID uint64, req CreateReque
 		// 发布提交时建发布群
 		var conversationID uint64
 		if r.chatCreator != nil {
-			convID, err := r.chatCreator.EnsureListingConversation(tx, listing)
+			convID, err := r.chatCreator.EnsureListingConversation(tx, listing, 0)
 			if err != nil {
 				return err
 			}
@@ -137,6 +137,14 @@ func (r *Repository) CreateFromExternalUpload(ctx context.Context, upload extern
 		if err := tx.Create(&listing).Error; err != nil {
 			return err
 		}
+		var conversationID uint64
+		if r.chatCreator != nil {
+			convID, err := r.chatCreator.EnsureListingConversation(tx, listing, admin.ID)
+			if err != nil {
+				return err
+			}
+			conversationID = convID
+		}
 		matchedAdminID := admin.ID
 		ownerID := owner.ID
 		listingID := listing.ID
@@ -155,6 +163,7 @@ func (r *Repository) CreateFromExternalUpload(ctx context.Context, upload extern
 			return err
 		}
 		dto = toDTO(account, listing)
+		dto.ListingGroupConversationID = conversationID
 		return nil
 	})
 	return dto, err