优化cnc工单返工：在原有的cnc工单后新增返工标志的cnc工单，且工序累加，状态为就绪，解除装夹工单的状态为等待其他工单

sf_manufacturing/models/product_template.py

@@ -7,8 +7,8 @@ import os
 from odoo import models, fields, api, _
 from odoo.exceptions import ValidationError
 from odoo.modules import get_resource_path
-from OCC.Extend.DataExchange import read_step_file
-from OCC.Extend.DataExchange import write_stl_file
+# from OCC.Extend.DataExchange import read_step_file
+# from OCC.Extend.DataExchange import write_stl_file
 
 
 class ResProductMo(models.Model):