feat: 抢单大厅假单池，仅改造 ddhq 接口

Co-authored-by: Cursor <cursoragent@cursor.com>

orders/views.py

@@ -3050,6 +3050,13 @@ class DashouDingdanHuoquView(APIView):
 
     def post(self, request):
         try:
+            from orders.services.fake_order_pool import (
+                dashou_should_use_fake_pool,
+                build_fake_order_pool_response,
+            )
+            if dashou_should_use_fake_pool(request.user):
+                return build_fake_order_pool_response(request)
+
             # 1. 获取请求参数
             data = request.data
             leixing_id = pick_leixing_id(data)