fix: purge every private offline store (Closes #889)

frontend/index.html

@@ -1243,6 +1243,7 @@
 
 <div class="footer">Creative AI-imbued UI • stackchain-dashboard</div>
 
+<script src="static/private-data-registry.js"></script>
 <script src="static/session.js"></script>
 <script src="static/feature-loader.js"></script>
 <script src="static/conversation-action-hydrator.js"></script>