优化: 将本地存储从localStorage迁移至IndexedDB以支持更大数据量存储

src/pages/NoteListPage.vue

@@ -73,7 +73,7 @@ onMounted(() => {
     // 加载预设的模拟数据
     store.loadMockData()
   } else {
-    // 从localStorage加载用户数据
+    // 从Storage加载用户数据
     store.loadData()
   }
 })
@@ -102,8 +102,8 @@ const filteredNotes = computed(() => {
   return store.notes.filter(note => {
     // 先检查搜索条件
     const matchesSearch = !lowerCaseQuery || 
-      (note.title && note.title.toLowerCase().includes(lowerCaseQuery)) || 
-      (note.content && note.content.toLowerCase().includes(lowerCaseQuery))
+      (note.title && typeof note.title === 'string' && note.title.toLowerCase().includes(lowerCaseQuery)) || 
+      (note.content && typeof note.content === 'string' && note.content.toLowerCase().includes(lowerCaseQuery))
 
     if (!matchesSearch) return false