feat: refactor flower.utils to sub package, added some sync api in package, added plate_order sync result model but relation of plate_order was not query (do it next step)

stateflow/services.py

@@ -175,7 +175,40 @@ def advance_to_next_state(business_object: 'models.BusinessObject', user, **para
         - state_log: 创建的状态日志（成功时）
     """
     # 业务约束：BusinessObject 必须能追溯到真实业务对象，否则状态流转记录没有业务意义。
-    # DB 允许为空仅为历史兼容；但新增数据一律禁止。
+    # DB 允许为空仅为历史兼容；但实际运行中存在“先创建 BO、后绑定到业务模型”的非标准路径。
+    # 为避免这类数据导致推进失败，这里做一次自愈：
+    # - 若 BO 未绑定 content_type/object_id（或 content_object 解析不到实例）
+    # - 则尝试通过常见的一对一反向关系（如 printing_job/plate_order）推断真实业务对象并补齐绑定
+    if business_object.content_type_id is None or business_object.object_id is None or business_object.content_object is None:
+        inferred_instance = None
+        inferred_default_name = None
+
+        # PrintingJob.business_object -> related_name='printing_job'
+        try:
+            inferred_instance = getattr(business_object, 'printing_job', None)
+            if inferred_instance is not None:
+                inferred_default_name = f"PrintingJob-{getattr(inferred_instance, 'pk', '')}"
+        except (ObjectDoesNotExist, AttributeError):
+            inferred_instance = None
+
+        # PlateOrder.business_object -> related_name='plate_order'
+        if inferred_instance is None:
+            try:
+                inferred_instance = getattr(business_object, 'plate_order', None)
+                if inferred_instance is not None:
+                    inferred_default_name = f"PlateOrder-{getattr(inferred_instance, 'pk', '')}"
+            except (ObjectDoesNotExist, AttributeError):
+                inferred_instance = None
+
+        if inferred_instance is not None:
+            ensure_business_object_bound_to_instance(
+                business_object,
+                inferred_instance,
+                default_name=inferred_default_name,
+            )
+            # GenericForeignKey 可能缓存了旧值，刷新以确保后续 content_object 判断正确
+            business_object.refresh_from_db(fields=['content_type', 'object_id', 'name'])
+
     if business_object.content_type_id is None or business_object.object_id is None:
         return False, "业务对象未绑定关联对象（content_type/object_id），禁止推进", None
     if business_object.content_object is None: