Homepage: list a dedicated Monero donation subaddress

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

htdocs/index.html

@@ -359,7 +359,7 @@
             <details class="crypto-support">
                 <summary>Other ways to support</summary>
                 <p>Monero contributions can be sent to this public address:</p>
-                <code class="wallet-address">48mFvxYDSCzMy5a3Zaj7ewApbX4GwXVXX9T1JC8mqBC19s9UcrNq8eaKkQ6GKdhHGQGmhdpvMd3mcbjf4eQbP8Yv7KdAREw</code>
+                <code class="wallet-address">83mkipZzsNDhUWwTRw1mjwEucZa4r8h8RgFhbFewj6x7CXbsL11FDxVh32cHNtdvoFg7PrVvr9fDYgEkC7F5PM2CGEmtkLu</code>
                 <p>The <a href="/xmrig.json">XMRig configuration</a> is an example for running your own miner on P2Pool, not a contribution link. Replace the example wallet with your own.</p>
                 <p><a class="text-link" href="#mining">See live pool stats and how to join <span aria-hidden="true">→</span></a></p>
             </details>