fix(note-editor): 优化自动保存机制，解决切换笔记时的保存问题

- 修复了在切换笔记时意外触发自动保存的问题- 引入标志位区分用户输入和程序加载内容
-优化了自动保存的防抖逻辑，提高用户体验
- 删除了不必要的组件代码，精简结构

biji-qianduan/src/components/HomePage.vue

@@ -268,17 +268,21 @@ const handleEditorBack = (data) => {
 };
 
 const handleSaveSuccess = (updatedFile) => {
-  editData.value = updatedFile;
-  if (selectedFile.value && selectedFile.value.id === updatedFile.id) {
-    selectedFile.value = updatedFile;
-  }
-  // Refresh list if needed
-  if (activeMenu.value.startsWith('group-')) {
-    const groupId = activeMenu.value.replace('group-', '');
-    handleSelectFile({ id: groupId });
+  editData.value = null; // Clear edit data
+  selectedFile.value = updatedFile; // Update the selected file to show the preview
+  showEditor.value = false; // Hide the editor
+
+  // Find the file in the current list and update it
+  const index = groupMarkdownFiles.value.findIndex(f => f.id === updatedFile.id);
+  if (index !== -1) {
+    groupMarkdownFiles.value[index] = updatedFile;
   } else {
-    resetToHomeView();
+    // If the file is new (or not in the current list), add it to the top
+    groupMarkdownFiles.value.unshift(updatedFile);
   }
+
+  // Also refresh the category tree to reflect new file counts or changes
+  fetchGroupings();
 };
 
 const previewFile = async (file) => {