feat: footer with source code link

app/page.tsx

@@ -563,6 +563,34 @@ export default function HomePage() {
           </div>
         </article>
       </section>
+
+      <footer className="footer">
+        <div className="footer-left">
+          <span className="version-pill">1</span>
+        </div>
+        <a
+          className="footer-link"
+          href="https://gitea.wittrail.com/wittrail/polynote"
+          target="_blank"
+          rel="noreferrer"
+        >
+          <svg className="gitea-icon" viewBox="0 0 64 64" role="img" aria-hidden="true">
+            <path
+              fill="#61b872"
+              d="M8 14.5c0-2 1.6-3.5 3.5-3.5h32c1.9 0 3.5 1.5 3.5 3.5l-1.7 15.4C44.5 38.9 37 45 28.6 45h-8.9c-6.5 0-11.9-4.8-12.7-11.3L8 14.5Z"
+            />
+            <path
+              fill="#4a7c59"
+              d="M44 18h5.6c3.7 0 6.5 3.4 5.7 7-0.8 3.6-4.1 6-7.8 6H44"
+            />
+            <path
+              fill="#9adf72"
+              d="M22.8 19.2c4 1.2 7.7 4.3 8.9 8.6-4.1-1-7.8-4.2-8.9-8.6Z"
+            />
+          </svg>
+          <span>{t("footer.repo")}</span>
+        </a>
+      </footer>
     </main>
   );
 }