feat(contact): add multilingual contact pages and dynamic configurations

- Created `src/pages/contact.astro` and `src/pages/zh/contact.astro` to support multilingual contact functionality.
- Introduced `contactIntents` and `contactMethods` dynamic configurations in `src/lib/data/contact.ts` for streamlined content management.
- Designed responsive and localized layouts with enhanced UX for both languages.

src/lib/data/contact.ts

@@ -0,0 +1,44 @@
+import type { ContactIntent, ContactMethod } from '@/types';
+
+export const contactIntents: ContactIntent[] = [
+  {
+    id: 'remote-role',
+    title: {
+      en: 'Remote Role',
+      zh: '远程岗位沟通',
+    },
+    description: {
+      en: 'Preferred for senior frontend/full-stack roles on complex products and systems.',
+      zh: '优先沟通资深前端/全栈远程岗位，偏好复杂产品与系统场景。',
+    },
+  },
+  {
+    id: 'project-collaboration',
+    title: {
+      en: 'Project Collaboration',
+      zh: '项目合作咨询',
+    },
+    description: {
+      en: 'Available for scoped project work involving architecture, delivery, and optimization.',
+      zh: '可承接范围明确的项目合作，包括架构设计、交付落地与性能优化。',
+    },
+  },
+];
+
+export const contactMethods: ContactMethod[] = [
+  {
+    label: { en: 'Email', zh: '邮箱' },
+    value: 'zhaoguiyang18@gmail.com',
+    href: 'mailto:zhaoguiyang18@gmail.com',
+  },
+  {
+    label: { en: 'GitHub', zh: 'GitHub' },
+    value: 'github.com/zguiyang',
+    href: 'https://github.com/zguiyang',
+  },
+  {
+    label: { en: 'LinkedIn', zh: 'LinkedIn' },
+    value: 'linkedin.com/in/zhaoguiyang',
+    href: 'https://linkedin.com/in/zhaoguiyang',
+  },
+];