refactor(model): 重构模型实体和数据访问层

dao/task_dao_bg.go

@@ -150,14 +150,6 @@ func (d *taskDao) UpdateTmpAfterModelGlobal(ctx context.Context, id int64, tmpFi
 	return err
 }
 
-func (d *taskDao) SoftDeleteByTaskIDGlobal(ctx context.Context, taskID string) error {
-	_, err := gfdb.DB(ctx).Exec(ctx,
-		fmt.Sprintf(`UPDATE %s SET deleted_at=NOW(), updated_at=NOW() WHERE task_id=? AND deleted_at IS NULL`, public.TableNameTask),
-		taskID,
-	)
-	return err
-}
-
 func (d *taskDao) RollbackToPendingGlobal(ctx context.Context, id int64) error {
 	_, err := gfdb.DB(ctx).Exec(ctx,
 		fmt.Sprintf(`UPDATE %s SET state=0, enqueue_at=NOW(), updated_at=NOW() WHERE id=? AND state=1`, public.TableNameTask),