feat: persist messages separately and update ingress docs

app/gosqs/delete_message_batch.go

@@ -73,6 +73,7 @@ func DeleteMessageBatchV1(req *http.Request) (int, interfaces.AbstractResponseBo
 	}
 
 	deletedEntries := make([]models.DeleteMessageBatchResultEntry, 0)
+	deletedUuids := make([]string, 0)
 	remainingMessages := make([]models.SqsMessage, 0, len(models.SyncQueues.Queues[key].Messages))
 
 	for _, message := range models.SyncQueues.Queues[key].Messages {
@@ -82,13 +83,16 @@ func DeleteMessageBatchV1(req *http.Request) (int, interfaces.AbstractResponseBo
 			delete(models.SyncQueues.Queues[key].Duplicates, message.DeduplicationID)
 			de.Deleted = true
 			deletedEntries = append(deletedEntries, models.DeleteMessageBatchResultEntry{Id: de.Id})
+			deletedUuids = append(deletedUuids, message.Uuid)
 		} else {
 			remainingMessages = append(remainingMessages, message)
 		}
 	}
 
 	models.SyncQueues.Queues[key].Messages = remainingMessages
-	// Персистим обновлённое состояние очереди, чтобы не терять batch-delete после рестарта.
+	// Удаляем сообщения из Redis отдельно — O(batch_size)
+	persistence.DeleteMessagesPersist(key, deletedUuids)
+	// Метаданные очереди (duplicates, FIFO state)
 	persistence.SaveQueue(key, models.SyncQueues.Queues[key])
 
 	notFoundEntries := make([]models.BatchResultErrorEntry, 0)