feat(webring): Random link in the Profullstack ring footer (#39)

Adds the Random (⚄) hop to the Profullstack OpenWebring footer per the 2026-10-10 ring spec.

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

Author: ralyodio

apps/web/src/app/layout.tsx

@@ -83,9 +83,10 @@ export default function RootLayout({
               github
             </a>
             <nav className="webring flex gap-x-3" aria-label="Profullstack webring">
-              <a href="https://rssamplifier.com/ring/profullstack/previous?from=https%3A%2F%2Fc0mpute.com%2F" rel="prev" className="!border-0 hover:text-[var(--color-accent)]">{"<<"}</a>
+              <a href="https://rssamplifier.com/ring/profullstack/previous?from=https%3A%2F%2Fc0mpute.com%2F" rel="prev" title="Previous site" className="!border-0 hover:text-[var(--color-accent)]">{"<<"}</a>
               <a href="https://rssamplifier.com/ring/profullstack" className="!border-0 hover:text-[var(--color-accent)]">Profullstack</a>
-              <a href="https://rssamplifier.com/ring/profullstack/next?from=https%3A%2F%2Fc0mpute.com%2F" rel="next" className="!border-0 hover:text-[var(--color-accent)]">{">>"}</a>
+              <a href="https://rssamplifier.com/ring/profullstack/next?from=https%3A%2F%2Fc0mpute.com%2F" rel="next" title="Next site" className="!border-0 hover:text-[var(--color-accent)]">{">>"}</a>
+              <a href="https://rssamplifier.com/ring/profullstack/random?from=https%3A%2F%2Fc0mpute.com%2F" title="Random site" aria-label="Random site" className="!border-0 hover:text-[var(--color-accent)]">{"⚄"}</a>
             </nav>
             <span className="ml-auto">MIT</span>
           </div>