fix: 三致命Bug—macro_status预计算+排除已完工脏读+flush落盘+递归深度限制10

backend/app/schemas/product.py

@@ -51,6 +51,7 @@ class ProductResponse(BaseModel):
     parent_product_id: uuid.UUID | None
     current_location_id: str | None = None
     current_location_name: str | None = None
+    macro_status: str | None = None  # 🔧 后端预计算的任务树状态（免前端逐条展开）
     overall_status: str | None = None
     status: str
     created_at: datetime