feat(navigation): add services section to header and translations

- Add 'nav.services' translations in both English and Chinese
- Include services link in desktop and mobile navigation
- Add id to services section for navigation
- Use personalInfo.name instead of translation for header name

src/i18n/ui.ts

@@ -10,6 +10,7 @@ export const ui = {
   en: {
     'nav.home': 'Home',
     'nav.about': 'About',
+    'nav.services': 'Services',
     'nav.projects': 'Projects',
     'nav.contact': 'Contact',
     'site.title': 'Joy Zhao - Full Stack Developer',
@@ -23,6 +24,7 @@ export const ui = {
   zh: {
     'nav.home': '首页',
     'nav.about': '关于',
+    'nav.services': '服务',
     'nav.projects': '项目',
     'nav.contact': '联系',
     'site.title': 'Joy Zhao - 全栈开发者',