test(credit-payment): 为支付页面添加data-testid属性

- 为支付页面标题添加data-testid="payment-page-title"
- 为订单信息容器添加data-testid="order-info"
- 为订单号添加data-testid="order-no"
- 为支付金额添加data-testid="payment-amount"
- 为微信支付选项添加data-testid="wechat-payment-option"
- 为微信支付选中标记添加data-testid="wechat-selected"
- 为额度支付选项添加data-testid="credit-payment-option"

这些属性用于测试中定位元素，提高测试稳定性

Generated with [Claude Code](https://claude.ai/code)
via [Happy](https://happy.engineering)

Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>

mini/src/pages/payment/index.tsx

@@ -374,18 +374,18 @@ const PaymentPage = () => {
       <View className="p-5">
         {/* 头部 */}
         <View className="text-center py-6 bg-white rounded-2xl mb-5">
-          <Text className="text-2xl font-bold text-gray-800">支付订单</Text>
+          <Text className="text-2xl font-bold text-gray-800" data-testid="payment-page-title">支付订单</Text>
         </View>
 
       {/* 订单信息 */}
-      <View className="bg-white rounded-2xl p-6 mb-5">
+      <View className="bg-white rounded-2xl p-6 mb-5" data-testid="order-info">
         <View className="flex justify-between items-center mb-4">
           <Text className="text-sm text-gray-600">订单号:</Text>
-          <Text className="text-sm text-gray-800">{orderNo || `ORD${orderId}`}</Text>
+          <Text className="text-sm text-gray-800" data-testid="order-no">{orderNo || `ORD${orderId}`}</Text>
         </View>
         <View className="flex justify-between items-center">
           <Text className="text-sm text-gray-600">支付金额:</Text>
-          <Text className="text-2xl font-bold text-orange-500">¥{amount.toFixed(2)}</Text>
+          <Text className="text-2xl font-bold text-orange-500" data-testid="payment-amount">¥{amount.toFixed(2)}</Text>
         </View>
       </View>
 
@@ -401,6 +401,7 @@ const PaymentPage = () => {
               : 'border-gray-200'
           }`}
           onClick={() => setSelectedPaymentMethod(PaymentMethod.WECHAT)}
+          data-testid="wechat-payment-option"
         >
           <View className="flex items-center">
             <View className="w-10 h-10 bg-green-100 rounded-full flex items-center justify-center mr-3">
@@ -412,7 +413,7 @@ const PaymentPage = () => {
             </View>
           </View>
           {selectedPaymentMethod === PaymentMethod.WECHAT && (
-            <View className="w-6 h-6 bg-blue-500 rounded-full flex items-center justify-center">
+            <View className="w-6 h-6 bg-blue-500 rounded-full flex items-center justify-center" data-testid="wechat-selected">
               <Text className="text-white text-xs">✓</Text>
             </View>
           )}
@@ -430,6 +431,7 @@ const PaymentPage = () => {
               setSelectedPaymentMethod(PaymentMethod.CREDIT)
             }
           }}
+          data-testid="credit-payment-option"
         >
           <View className="flex items-center">
             <View className="w-10 h-10 bg-purple-100 rounded-full flex items-center justify-center mr-3">
@@ -440,17 +442,17 @@ const PaymentPage = () => {
               {isCreditBalanceLoading ? (
                 <Text className="text-xs text-gray-500">加载中...</Text>
               ) : creditBalance?.isEnabled ? (
-                <Text className="text-xs text-gray-500">
+                <Text className="text-xs text-gray-500" data-testid="available-amount-text">
                   可用额度: ¥{creditBalance?.availableAmount?.toFixed(2) || '0.00'}
                   {creditBalance?.availableAmount < amount && ` (不足)`}
                 </Text>
               ) : (
-                <Text className="text-xs text-red-500">额度未启用</Text>
+                <Text className="text-xs text-red-500" data-testid="credit-disabled-text">额度未启用</Text>
               )}
             </View>
           </View>
           {selectedPaymentMethod === PaymentMethod.CREDIT ? (
-            <View className="w-6 h-6 bg-blue-500 rounded-full flex items-center justify-center">
+            <View className="w-6 h-6 bg-blue-500 rounded-full flex items-center justify-center" data-testid="credit-selected">
               <Text className="text-white text-xs">✓</Text>
             </View>
           ) : (!creditBalance?.isEnabled || creditBalance?.availableAmount <= 0 || creditBalance?.availableAmount < amount) && (
@@ -460,7 +462,7 @@ const PaymentPage = () => {
 
         {/* 额度支付说明 */}
         {selectedPaymentMethod === PaymentMethod.CREDIT && creditBalance && (
-          <View className="mt-4 p-3 bg-blue-50 rounded-lg">
+          <View className="mt-4 p-3 bg-blue-50 rounded-lg" data-testid="credit-payment-details">
             <Text className="text-xs text-blue-700">
               • 使用信用额度支付，无需立即付款{'\n'}
               • 可用额度: ¥{creditBalance.availableAmount.toFixed(2)}{'\n'}
@@ -489,6 +491,7 @@ const PaymentPage = () => {
             } text-white rounded-full text-lg font-bold ${
               isProcessing ? 'bg-gray-400' : ''
             }`}
+            data-testid="pay-button"
           >
             {isProcessing ? '支付中...' :
               selectedPaymentMethod === PaymentMethod.CREDIT