feat(components): 新增 GiftCard礼品卡组件

- 新增 GiftCard 组件，支持多种类型礼品卡的展示和交互
- 组件包含商品信息、价格、折扣、使用指南等丰富功能- 优化图像展示，支持单

src/user/gift/detail.tsx

@@ -168,20 +168,6 @@ const GiftCardDetail = () => {
 
   return (
     <ConfigProvider>
-      {/* 自定义导航栏 */}
-      <View className="flex items-center justify-between p-4 bg-white border-b border-gray-100">
-        <View className="flex items-center" onClick={handleBack}>
-          <ArrowLeft size="20" />
-          <Text className="ml-2 text-lg">礼品卡详情</Text>
-        </View>
-        <View className="flex items-center gap-3">
-          <View onClick={() => setShowShare(true)}>
-            <Share size="20" className="text-gray-600" />
-          </View>
-          <Tag type={statusInfo.color as any}>{statusInfo.text}</Tag>
-        </View>
-      </View>
-
       {/* 礼品卡卡片 */}
       <View className="m-4 p-6 rounded-2xl text-white" style={{backgroundColor: '#fbbf24'}}>
         <View className="flex items-center justify-between mb-4">