replace bun, add start of timeline

src/layout/TopBar.tsx

@@ -2,7 +2,7 @@ import React, { type ReactElement } from 'react';
 import { Box, Tab, Tabs } from '@mui/material';
 import { useLocation, useNavigate } from 'react-router';
 
-const ValidTabs = ['home', 'about', 'contact'] as const satisfies string[];
+const ValidTabs = ['home', 'career', 'about'] as const satisfies string[];
 
 export function TopBar(): ReactElement {
     const { pathname } = useLocation();