Fix: 修正重定向逻辑 & 使用Pinia管理状态

src/pages/index.vue

@@ -1,15 +1,48 @@
 <template>
-  <div>Redirecting...</div>
+  <v-container class="d-flex justify-center align-center" style="min-height: 50vh;">
+    <div class="text-center">
+      <v-progress-circular
+        color="primary"
+        indeterminate
+        size="64"
+        width="6"
+      />
+      <div class="text-h6 mt-4 text-primary">
+        {{ $t('loading') }}...
+      </div>
+    </div>
+  </v-container>
 </template>
 
 <script lang="ts" setup>
   import { onMounted } from 'vue'
-  import { useRouter } from 'vue-router'
+  import { useRoute, useRouter } from 'vue-router'
 
   const router = useRouter()
+  const route = useRoute()
 
-  onMounted(() => {
-    // Redirect to the calculators page
-    router.push('/calculators/paper-tube-weight')
+  onMounted(async () => {
+    // 等待路由完全准备好
+    await router.isReady()
+
+    // 检查是否是直接访问首页
+    const isDirectAccess = route.path === '/' && !document.referrer.includes(window.location.origin)
+
+    let targetPath = '/calculators/paper-tube-weight' // 默认路径
+
+    if (!isDirectAccess) {
+      // 如果不是直接访问，尝试恢复上次的路径
+      const lastRoute = sessionStorage.getItem('lastRoute')
+      const savedPath = localStorage.getItem('lastPath')
+      targetPath = lastRoute || savedPath || targetPath
+    }
+
+    // 使用 replace 避免在历史记录中留下首页
+    router.replace(targetPath)
   })
 </script>
+
+<route lang="yaml">
+meta:
+  layout: CalculatorLayout
+</route>