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/pages/contact.astro

@@ -0,0 +1,62 @@
+---
+import Layout from '@/layouts/Layout.astro';
+import GlassHeader from '@/components/GlassHeader';
+import Footer from '@/components/Footer';
+import Container from '@/components/ui/Container.astro';
+import { contactIntents, contactMethods } from '@/lib/data';
+import type { Lang } from '@/types/i18n';
+import { defaultLang } from '@/i18n/ui';
+
+const lang = (Astro.currentLocale as Lang) || defaultLang;
+const isZh = lang === 'zh';
+---
+
+<Layout title={isZh ? '联系' : 'Contact'}>
+  <GlassHeader lang={lang} client:load transition:persist="header" />
+
+  <main class="min-h-screen pt-24 pb-20">
+    <Container>
+      <section class="page-content-main">
+        <h1 class="text-4xl font-bold tracking-tight sm:text-5xl">{isZh ? '联系' : 'Contact'}</h1>
+        <p class="mt-4 text-lg text-muted-foreground">
+          {isZh
+            ? '欢迎联系我沟通远程岗位或项目合作。默认优先响应远程岗位机会。'
+            : 'Open to remote role opportunities and project collaboration. Remote role discussions are prioritized.'}
+        </p>
+      </section>
+
+      <section class="page-content-main mt-10 grid gap-6 md:grid-cols-2">
+        {contactIntents.map((intent) => (
+          <article id={intent.id} class="page-surface p-6">
+            <h2 class="text-xl font-bold">{intent.title[lang]}</h2>
+            <p class="mt-3 text-muted-foreground">{intent.description[lang]}</p>
+          </article>
+        ))}
+      </section>
+
+      <section class="page-content-main mt-6 page-surface p-6">
+        <h2 class="text-xl font-bold">{isZh ? '联系方式' : 'Contact Methods'}</h2>
+        <ul class="mt-4 space-y-3 text-sm">
+          {contactMethods.map((method) => (
+            <li class="flex flex-col gap-1 sm:flex-row sm:items-center sm:justify-between border-b border-border/70 pb-3">
+              <span class="font-semibold text-foreground">{method.label[lang]}</span>
+              {method.href ? (
+                <a href={method.href} target="_blank" rel="noopener noreferrer" class="text-primary hover:text-primary/80 break-all">{method.value}</a>
+              ) : (
+                <span class="text-muted-foreground break-all">{method.value}</span>
+              )}
+            </li>
+          ))}
+        </ul>
+
+        <p class="mt-5 text-xs text-muted-foreground">
+          {isZh
+            ? '联系建议：请在邮件中注明岗位/项目背景、期望合作方式与时间窗口。'
+            : 'Suggestion: include role/project context, expected collaboration model, and timeline in your first message.'}
+        </p>
+      </section>
+    </Container>
+  </main>
+
+  <Footer lang={lang} client:load />
+</Layout>