PolHunter return loop: ?from=polhunter sets iap.return (landing + join links), /api/me carries returnTo, Overview card sends them back once a wallet is linked, wallet link answers next=/api/my/polhunter, hand-off clears the cookie

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

public/my.html

@@ -172,6 +172,7 @@
     <main class="bo-content">
 
       <div class="pane" id="pane-overview">
+        <div class="card" id="phReturn" hidden></div>
         <div class="card gs" id="gsCard" hidden>
           <div class="card-head"><h3>Getting started</h3><span class="sub" id="gsSub"></span></div>
           <div class="gs-steps" id="gsSteps"></div>
@@ -1037,7 +1038,7 @@
 <script src="/assets/common.js?v=20260916a"></script>
 <script src="/assets/wallet.js?v=20260911a"></script>
 <script src="/assets/promo.js?v=20260911a"></script>
-<script src="/assets/my.js?v=20260919b"></script>
+<script src="/assets/my.js?v=20260920b"></script>
 <script src="/assets/chat.js?v=20260907l"></script>
 </body>
 </html>