feat(Dashboard): 根据设备类型动态调整首页高度

添加系统信息获取功能，检测是否为平板设备
根据设备类型动态调整首页 hero 区域高度

 <!--
  * @Date: 2025-08-27 17:43:45
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-09-17 14:28:08
+ * @LastEditTime: 2025-09-19 23:23:33
  * @FilePath: /lls_program/src/pages/Dashboard/index.vue
  * @Description: 首页
 -->
 <template>
   <view class="min-h-screen flex flex-col bg-white pb-16" style="background-color: #F9FAFB;">
     <!-- Hero section with family name and background image -->
-    <view class=" bg-white rounded-xl shadow-md mx-4 mt-4 relative" style="height: 30vh;">
+    <view class=" bg-white rounded-xl shadow-md mx-4 mt-4 relative" :style="{ height: isTabletDevice ? '40vh' : '30vh' }">
       <image :src="familyCover" mode="aspectFill" alt="Family background" class="w-full h-full object-cover rounded-xl" />
       <view class="absolute inset-0 flex flex-col justify-end rounded-xl bg-black bg-opacity-10">
         <view class="m-5">
@@ -383,6 +383,9 @@ useLoad(async () => {
 });
 
 useDidShow(async () => {
+  // 获取系统信息
+  getSystemInfo();
+
   // 刷新页面数据
   await refreshDashboardData();
 
@@ -466,4 +469,35 @@ const onShareAppMessage = (res) => {
 Taro.useShareAppMessage((res) => {
     return onShareAppMessage(res);
 });
+
+// 系统信息
+const systemInfo = ref({});
+
+/**
+ * 获取系统信息
+ */
+const getSystemInfo = () => {
+  try {
+    const info = Taro.getSystemInfoSync();
+    systemInfo.value = info;
+  } catch (error) {
+    console.error('获取系统信息失败:', error);
+  }
+};
+
+/**
+ * 检测是否为 iPad 类型设备
+ */
+const isTabletDevice = computed(() => {
+  if (!systemInfo.value.screenWidth) {
+    return false;
+  }
+
+  const { screenWidth, screenHeight } = systemInfo.value;
+  const screenRatio = screenWidth / screenHeight;
+
+  // iPad 类型设备通常屏幕比例在 0.7-0.8 之间（4:3 约为 0.75）
+  // 普通手机设备比例通常在 0.4-0.6 之间
+  return screenRatio > 0.65;
+});
 </script>