feat(biji-qianduan): 优化移动端适配并添加相关功能

- 新增移动端样式文件，优化小屏幕布局和交互- 在 HomePage 组件中添加移动端导航栏和搜索功能
- 修改 App.vue 以适应移动端布局- 更新 package.json 中的依赖版本
- 新增移动优先设计文档

biji-qianduan/package.json

@@ -12,18 +12,18 @@
   "dependencies": {
     "@kangc/v-md-editor": "^2.2.4",
     "codemirror": "^6.0.1",
-    "element-plus": "^2.10.4",
+    "element-plus": "^2.7.6",
     "highlight.js": "^11.11.1",
     "html2canvas": "^1.4.1",
     "jspdf": "^3.0.1",
     "pinia": "^3.0.3",
     "pinia-plugin-persistedstate": "^4.4.1",
     "vditor": "^3.11.1",
-    "vue": "^3.5.13"
+    "vue": "^3.4.27"
   },
   "devDependencies": {
-    "@vitejs/plugin-vue": "^5.2.3",
-    "vite": "^6.3.5",
+    "@vitejs/plugin-vue": "^5.0.5",
+    "vite": "^5.3.1",
     "terser": "^5.31.3"
   }
 }