feat: added plate order clone

api_v1/views/printing/services.py

@@ -4,6 +4,7 @@ Printing module business logic services
 from typing import Dict, Any, Tuple
 from django.conf import settings
 from django.db import transaction
+from django.contrib.contenttypes.models import ContentType
 from printing import models as printing_models
 from stateflow import models as stateflow_models
 from stateflow import services as stateflow_services
@@ -126,10 +127,14 @@ class PrintingJobService:
         
         # 如果 PrintingOrder 有关联的流程，创建 BusinessObject
         if printing_order and printing_order.process:
+            # 将流程实例绑定到该 PrintingJob（便于跨模块定位与审计）
+            ct = ContentType.objects.get_for_model(printing_models.PrintingJob)
             business_object = stateflow_models.BusinessObject.objects.create(
                 name=f"PrintingJob-{job.id}",
                 process=printing_order.process,
                 description=f"印染任务 {job.id} 的流程实例",
+                content_type=ct,
+                object_id=job.id,
             )
             job.business_object = business_object
             job.save()