feat: link to datacenter demo on homepage

Add a sentence under the homepage intro pointing readers to
datacenter.kaichen.dev — a small demo showcasing a model of a
datacenter — styled like the existing Longtermism / EA links.

Co-authored-by: Claude <noreply@anthropic.com>

Author: kaiiiichen

app/page.tsx

@@ -115,6 +115,7 @@ export default async function Home() {
             <p>Welcome to my personal space at a corner of the human made internet :D</p>
             <p className="mt-1">I am a believer of <a href="https://en.wikipedia.org/wiki/Longtermism" target="_blank" rel="noopener noreferrer" className="underline underline-offset-2 decoration-zinc-300 dark:decoration-zinc-600 hover:text-zinc-900 dark:hover:text-zinc-100 transition-colors duration-150"><em>Longtermism</em></a> and <a href="https://www.effectivealtruism.org/" target="_blank" rel="noopener noreferrer" className="underline underline-offset-2 decoration-zinc-300 dark:decoration-zinc-600 hover:text-zinc-900 dark:hover:text-zinc-100 transition-colors duration-150"><em>Effective Altruism</em></a>.</p>
             <p className="mt-1">Currently, I&apos;m also investigating AI alignment and ML fairness.</p>
+            <p className="mt-1"><a href="https://datacenter.kaichen.dev/" target="_blank" rel="noopener noreferrer" className="underline underline-offset-2 decoration-zinc-300 dark:decoration-zinc-600 hover:text-zinc-900 dark:hover:text-zinc-100 transition-colors duration-150"><em>Here</em></a> is a demo I made showcasing a model of a datacenter.</p>
             <p className="mt-1">And I&apos;m still trying to build a consistant lifestyle & fitness routine lol.</p>
           </div>