feat: update public contact info and social visibility

src/pages/about.astro

@@ -99,7 +99,7 @@ const workStyle = isZh
         <p class="mt-3 text-muted-foreground">{isZh ? '优先沟通远程岗位机会，其次为项目合作咨询。' : 'Remote role opportunities are prioritized, followed by project collaboration.'}</p>
 
         <ul class="mt-5 space-y-3 text-sm">
-          {contactMethods.slice(0, 2).map((method) => (
+          {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 ? (
@@ -115,6 +115,11 @@ const workStyle = isZh
           <a href={`${prefix}/contact`} class="inline-flex h-10 items-center rounded-lg bg-primary px-5 text-sm font-semibold text-primary-foreground">{isZh ? '进入完整联系页' : 'Open Full Contact Page'}</a>
           <a href={`${prefix}/contact#project-collaboration`} class="inline-flex h-10 items-center rounded-lg border border-border px-5 text-sm font-semibold hover:bg-muted">{isZh ? '项目合作入口' : 'Project Collaboration'}</a>
         </div>
+
+        <div class="mt-5 border-t border-border/70 pt-4 text-sm">
+          <p class="font-semibold text-foreground">GitHub</p>
+          <a href={personalInfo.github} target="_blank" rel="noopener noreferrer" class="text-primary hover:text-primary/80 break-all">{personalInfo.github}</a>
+        </div>
       </section>
     </Container>
   </main>