feat(qianduan): 重构前端结构并添加新功能

- 新增分类创建功能
- 新增笔记创建功能
- 优化笔记列表展示
- 改进笔记预览界面
- 添加删除笔记功能
- 重构菜单选择逻辑
- 优化文件上传处理
- 更新Markdown编辑器配置

biji-qianduan/src/main.js

@@ -1,18 +1,33 @@
 import { createApp } from 'vue'
 import App from './App.vue'
-import router from './router'
+import router from './router/'
 import ElementPlus from 'element-plus'
 import 'element-plus/dist/index.css'
+
 import VMdEditor from '@kangc/v-md-editor';
 import '@kangc/v-md-editor/lib/style/base-editor.css';
-import vuepressTheme from '@kangc/v-md-editor/lib/theme/vuepress.js';
-import '@kangc/v-md-editor/lib/theme/style/vuepress.css';
+import githubTheme from '@kangc/v-md-editor/lib/theme/github.js';
+import '@kangc/v-md-editor/lib/theme/style/github.css';
+
+import VMdPreview from '@kangc/v-md-editor/lib/preview';
+import '@kangc/v-md-editor/lib/style/preview.css';
+import '@kangc/v-md-editor/lib/theme/style/github.css';
+
 
 const app = createApp(App)
 
-// 配置Markdown编辑器
-VMdEditor.use(vuepressTheme);
+// highlightjs
+import hljs from 'highlight.js';
+VMdEditor.use(githubTheme, {
+    Hljs: hljs,
+});
+VMdPreview.use(githubTheme, {
+    Hljs: hljs,
+});
+
+// // 配置Markdown编辑器
 app.use(VMdEditor);
+app.use(VMdPreview);
 
 // 使用Element Plus和路由
 app.use(ElementPlus)