fix: 星阙(xq)微信支付改读后台 club 表配置

移除 xq 强制回落 app_secrets 的逻辑，与星之界一致优先读 club 表；
字段为空时仍按项回落 settings，避免未配置时中断现网。
订单 fucha 查单同步使用 club 对应商户号。

回退: git reset --hard backup-before-xq-club-pay-20260710

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

orders/views/payment.py

@@ -541,7 +541,9 @@ class PaymentVerifyView(APIView):
 
                 try:
                     # 调用微信订单查询接口
-                    trade_state, transaction_id = self._query_wechat_payment(dingdanid)
+                    trade_state, transaction_id = self._query_wechat_payment(
+                        dingdanid, club_id=getattr(dingdan, 'ClubID', None),
+                    )
 
                     if trade_state == 'SUCCESS':
                         # 支付成功，执行本地更新
@@ -682,14 +684,16 @@ class PaymentVerifyView(APIView):
             except Exception as e:
                 logger.error(f'订单收支统计失败 {dingdan.OrderID}: {e}', exc_info=True)
 
-    def _query_wechat_payment(self, out_trade_no):
+    def _query_wechat_payment(self, out_trade_no, club_id=None):
         """
         调用微信支付订单查询接口，返回 (trade_state, transaction_id)
         若查询失败，抛出异常
         """
-        appid = settings.WEIXIN_APPID
-        mch_id = settings.WEIXIN_MCHID
-        key = settings.WEIXIN_SHANGHUMIYAO
+        from jituan.services.wechat_pay import club_id_from_order, get_wechat_v2_config
+        pay_cfg = get_wechat_v2_config(club_id or club_id_from_order(out_trade_no))
+        appid = pay_cfg['appid']
+        mch_id = pay_cfg['mch_id']
+        key = pay_cfg['key']
         nonce_str = self._generate_nonce_str()
 
         params = {