feat: remember selected tab

frontend_nuxt/pages/index.vue

@@ -147,18 +147,14 @@ const categoryOptions = ref([])
 const isLoadingMore = ref(false)
 
 const topics = ref(['最新回复', '最新', '排行榜' /*, '热门', '类别'*/])
-const HOME_TAB_KEY = 'homeTab'
-const routeDefault =
-  route.query.view === 'ranking' ? '排行榜' : route.query.view === 'latest' ? '最新' : null
-const selectedTopic = ref(routeDefault || '最新回复')
+const selectedTopic = ref(
+  route.query.view === 'ranking' ? '排行榜' : route.query.view === 'latest' ? '最新' : '最新回复',
+)
+
 if (import.meta.client) {
-  if (routeDefault) {
-    localStorage.setItem(HOME_TAB_KEY, routeDefault)
-  } else {
-    const stored = localStorage.getItem(HOME_TAB_KEY)
-    if (stored && topics.value.includes(stored)) {
-      selectedTopic.value = stored
-    }
+  const storedTopic = localStorage.getItem('home-selected-topic')
+  if (storedTopic && topics.value.includes(storedTopic)) {
+    selectedTopic.value = storedTopic
   }
 }
 const articles = ref([])
@@ -351,8 +347,10 @@ watch(
 watch([selectedCategory, selectedTags], () => {
   loadOptions()
 })
-watch(selectedTopic, (val) => {
-  if (import.meta.client) localStorage.setItem(HOME_TAB_KEY, val)
+watch(selectedTopic, (topic) => {
+  if (import.meta.client) {
+    localStorage.setItem('home-selected-topic', topic)
+  }
   // 仅当需要额外选项时加载
   loadOptions()
 })