fix(shop): 修正左右分栏高度适配问题

- 左侧分类栏 ScrollView 高度由 h-screen 修改为 h-full
- 右侧排序栏及商品列表容器高度由 h-screen 修改为 h-full
- 商品列表 ScrollView 添加 min-h-0 用于改善滚动高度限制

src/pages/shop/index.tsx

@@ -204,7 +204,7 @@ const ShopPage: React.FC = () => {
       {/* 左右分栏 */}
       <View className='flex flex-1 min-h-0'>
       {/* 左侧分类栏 */}
-      <ScrollView scrollY className='w-20 bg-gray-100 h-screen flex-shrink-0'>
+      <ScrollView scrollY className='w-20 bg-gray-100 h-full flex-shrink-0'>
         {categoryList.map(cat => (
           <View
             key={cat.categoryId || cat.id}
@@ -221,7 +221,7 @@ const ShopPage: React.FC = () => {
       </ScrollView>
 
       {/* 右侧：排序栏 + 商品列表 */}
-      <View className='flex-1 flex flex-col h-screen min-w-0'>
+      <View className='flex-1 flex flex-col h-full min-w-0'>
         {/* 排序栏 */}
         <View className='flex items-center bg-white py-2 border-b border-gray-100 flex-shrink-0'>
           {SORT_TABS.map(tab => (
@@ -252,7 +252,7 @@ const ShopPage: React.FC = () => {
         {/* 商品列表 */}
         <ScrollView
           scrollY
-          className='flex-1'
+          className='flex-1 min-h-0'
           onScrollToLower={handleLoadMore}
           lowerThreshold={100}
         >