refactor(order): 优化订单列表倒计时展示逻辑

- 更新 API 基础 URL 以适应开发环境
- 调整倒计时组件样式，移除冗余样式
- 优化订单列表中倒计时的显示逻辑
- 统一处理订单状态文本和颜色

src/components/PaymentCountdown.tsx

@@ -1,10 +1,10 @@
 import React from 'react';
 import { View, Text } from '@tarojs/components';
-import { 
-  usePaymentCountdown, 
-  formatCountdownText, 
-  isUrgentCountdown, 
-  isCriticalCountdown 
+import {
+  usePaymentCountdown,
+  formatCountdownText,
+  isUrgentCountdown,
+  isCriticalCountdown
 } from '@/hooks/usePaymentCountdown';
 import './PaymentCountdown.scss';
 
@@ -64,7 +64,7 @@ const PaymentCountdown: React.FC<PaymentCountdownProps> = ({
   // 判断紧急程度
   const isUrgent = isUrgentCountdown(timeLeft);
   const isCritical = isCriticalCountdown(timeLeft);
-  
+
   // 格式化倒计时文本
   const countdownText = formatCountdownText(timeLeft, showSeconds);
   const fullText = `等待付款 ${countdownText}`;