feat: mission replied calling task

shipment/services.py

@@ -625,7 +625,7 @@ def modify_status(
     规则：
     - 草稿 -> 只能已发布
     - 已发布 -> 已审核 / 已驳回 / 已取消
-    - 已驳回 -> 已审核 / 已取消
+    - 已驳回 -> 已取消
     - 已审核 -> 已取消
     - 已取消 -> 不可再变
     - 重复设置同一状态保持幂等，直接返回
@@ -642,7 +642,9 @@ def modify_status(
             ShipmentStatus.CANCELLED,
         },
         ShipmentStatus.REJECTED: {
-            ShipmentStatus.APPROVED,
+            # 驳回现在会解绑销售品并回退到待分配池。
+            # 在没有重新绑定流程前，暂时关闭 REJECTED -> APPROVED，避免审核空出货单。
+            # ShipmentStatus.APPROVED,
             ShipmentStatus.CANCELLED,
         },
         ShipmentStatus.APPROVED: {
@@ -660,6 +662,22 @@ def modify_status(
     if target_status == ShipmentStatus.APPROVED and approved_by is None:
         raise ValueError("目标状态为已审核时，approved_by 不能为空")
 
+    update_fields = [
+        "status",
+        "status_modified_at",
+        "cancelled_by",
+        "approved_by",
+        "updated_at",
+    ]
+
+    if target_status == ShipmentStatus.REJECTED:
+        bound_sales_item_qs = SalesItem.objects.select_for_update().filter(shipment=shipment)
+        shipment.rejected_sales_item_ids = list(
+            bound_sales_item_qs.order_by("id").values_list("id", flat=True)
+        )
+        bound_sales_item_qs.update(shipment=None)
+        update_fields.append("rejected_sales_item_ids")
+
     shipment.status = target_status
     shipment.status_modified_at = timezone.now()
 
@@ -669,15 +687,7 @@ def modify_status(
     if target_status == ShipmentStatus.APPROVED:
         shipment.approved_by = approved_by
 
-    shipment.save(
-        update_fields=[
-            "status",
-            "status_modified_at",
-            "cancelled_by",
-            "approved_by",
-            "updated_at",
-        ]
-    )
+    shipment.save(update_fields=update_fields)
     return shipment