fix: 修复强充场景幂等 key 在微信支付失败时未被清除的问题

将 markClientPurchaseCreated 移至 CreateJSAPIPayment 成功之后调用，
确保支付失败时 defer 能可靠地删除幂等 key，避免用户无法重新下单。

原顺序：创建充值单 → markClientPurchaseCreated → CreateJSAPIPayment
修复后：创建充值单 → CreateJSAPIPayment → markClientPurchaseCreated → *created=true

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

internal/service/client_order/service.go

@@ -366,13 +366,13 @@ func (s *Service) createForceRechargeOrder(
 		return nil, errors.Wrap(errors.CodeDatabaseError, err, "创建充值记录失败")
 	}
 
-	s.markClientPurchaseCreated(ctx, redisKey, recharge.RechargeNo)
-
 	paymentResult, err := paymentProvider.CreateJSAPIPayment(ctx, recharge.RechargeNo, "余额充值", openID, int(recharge.Amount))
 	if err != nil {
 		return nil, err
 	}
 
+	// 微信支付创建成功后才标记幂等 key，确保支付失败时 defer 能正确清除 key
+	s.markClientPurchaseCreated(ctx, redisKey, recharge.RechargeNo)
 	*created = true
 
 	return &dto.ClientCreateOrderResponse{