refactor(layout): 优化网页布局和路由设置

- 更新 logo显示方式，使用 import 代替直接引用
- 将 BrowserRouter 替换为 HashRouter，以适应前端路由
- 在项目中添加 logo.svg 文件，统一 logo 资源
- 调整 vite.config.ts，设置 base 为 './' 以优化构建

BillNote_frontend/src/layouts/HomeLayout.tsx

@@ -11,7 +11,7 @@ import { useState } from 'react'
 import { Link } from 'react-router-dom'
 import { ResizablePanel, ResizablePanelGroup, ResizableHandle } from '@/components/ui/resizable'
 import {ScrollArea} from "@/components/ui/scroll-area.tsx";
-
+import logo from '@/assets/icon.svg'
 interface IProps {
   NoteForm: React.ReactNode
   Preview: React.ReactNode
@@ -29,7 +29,7 @@ const HomeLayout: FC<IProps> = ({ NoteForm, Preview, History }) => {
             <header className="flex h-16 items-center justify-between px-6">
               <div className="flex items-center gap-2">
                 <div className="flex h-10 w-10 items-center justify-center overflow-hidden rounded-2xl">
-                  <img src="/icon.svg" alt="logo" className="h-full w-full object-contain" />
+                  <img src={logo} alt="logo" className="h-full w-full object-contain" />
                 </div>
                 <div className="text-2xl font-bold text-gray-800">BiliNote</div>
               </div>

BillNote_frontend/src/layouts/SettingLayout.tsx

@@ -7,6 +7,8 @@ import {
 import { Link, Outlet } from 'react-router-dom'
 import { SlidersHorizontal } from 'lucide-react'
 import React from 'react'
+import logo from '@/assets/icon.svg'
+
 interface ISettingLayoutProps {
   Menu: React.ReactNode
 }
@@ -25,7 +27,7 @@ const SettingLayout = ({ Menu }: ISettingLayoutProps) => {
           <header className="flex h-16 items-center justify-between px-6">
             <div className="flex items-center gap-2">
               <div className="flex h-10 w-10 items-center justify-center overflow-hidden rounded-2xl">
-                <img src="/icon.svg" alt="logo" className="h-full w-full object-contain" />
+                <img src={logo} alt="logo" className="h-full w-full object-contain" />
               </div>
               <div className="text-2xl font-bold text-gray-800">BiliNote</div>
             </div>