feat: 商家派单金额限额改为后台可配置，派单接口读取XcxSysPeizhi

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

dingdan/views.py

@@ -2556,15 +2556,11 @@ class ShangjiaPaifaView(APIView):
                 logger.warning(f"参数缺失: {request.data}")
                 return Response({'code': 400, 'msg': '缺少必填参数'})
 
-            # ----- 4. 价格验证 -----
-            try:
-                jiage = float(jiage_str)
-                if jiage < 10 or jiage > 10000:
-                    return Response({'code': 400, 'msg': '价格需在10-10000元之间'})
-                if '.' in str(jiage_str) and len(str(jiage_str).split('.')[1]) > 2:
-                    return Response({'code': 400, 'msg': '最多支持两位小数'})
-            except ValueError:
-                return Response({'code': 400, 'msg': '价格格式错误'})
+            # ----- 4. 价格验证（限额读后台配置，非写死）-----
+            from utils.shangjia_paifa_config import validate_shangjia_paifa_jiage
+            price_ok, price_msg, jiage = validate_shangjia_paifa_jiage(jiage_str)
+            if not price_ok:
+                return Response({'code': 400, 'msg': price_msg})
 
             # ----- 5. 商品类型 -----
             try: