Top menu: 'How it works' and 'Ad packages' anchor to homepage sections (#how, #packages); sections clear the sticky nav

The Ad packages link pointed at /#ladder, an id that did not exist on the homepage.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

public/tx.html

@@ -34,7 +34,7 @@
     <p><a href="/ledger">← Back to the live ledger</a> · <a href="/contract">Read the contract review</a></p>
   </div>
 </section>
-<script src="/assets/common.js?v=20260912c"></script>
+<script src="/assets/common.js?v=20260912d"></script>
 <script src="/assets/tx.js?v=20260906m"></script>
 </body>
 </html>