fix: 调整地图跳转逻辑

- 新增locate页，用于地图跳转
- 调整about页卡片布局

app/pages/locate.vue

@@ -0,0 +1,12 @@
+<template>
+  <div>redirecting...</div>
+</template>
+
+<script setup lang="ts">
+  onMounted(async () => {
+    const platform = await getAutoMappedService();
+
+    // // ✔ 移动端能正常跳转
+    window.location.href = platform;
+  });
+</script>