feat(webring): Random link in the Profullstack ring footer (#351)

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

components/site-footer.tsx

@@ -29,9 +29,10 @@ export function SiteFooter() {
             <li><Link href="/bot">Bot info</Link></li>
             {/* Member of the Profullstack OpenWebring (logicsrc.com/openwebring): the ring reads these links. */}
             <li>
-              <a href="https://rssamplifier.com/ring/profullstack/previous?from=https%3A%2F%2Fcrawlproof.com%2F" rel="prev">{"<<"}</a>{" "}
+              <a href="https://rssamplifier.com/ring/profullstack/previous?from=https%3A%2F%2Fcrawlproof.com%2F" rel="prev" title="Previous site">{"<<"}</a>{" "}
               <a href="https://rssamplifier.com/ring/profullstack">Profullstack</a>{" "}
-              <a href="https://rssamplifier.com/ring/profullstack/next?from=https%3A%2F%2Fcrawlproof.com%2F" rel="next">{">>"}</a>
+              <a href="https://rssamplifier.com/ring/profullstack/next?from=https%3A%2F%2Fcrawlproof.com%2F" rel="next" title="Next site">{">>"}</a>{" "}
+              <a href="https://rssamplifier.com/ring/profullstack/random?from=https%3A%2F%2Fcrawlproof.com%2F" title="Random site" aria-label="Random site">{"⚄"}</a>
             </li>
           </ul>
         </div>