bookmarks: map + account UI for saved locations

frontend/templates/home.html.j2

@@ -198,6 +198,10 @@
 {% block body_scripts %}
   <script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"></script>
   <script type="module" src="{{ asset_base }}/app.js"></script>
+  {# Bookmarked locations: a star toggle in the results share row + a "Saved"
+     dropdown by the Find button. Loaded as its own module alongside app.js
+     (not merged into it) — see bookmarks-ui.js's header comment for why. #}
+  <script type="module" src="{{ asset_base }}/bookmarks-ui.js"></script>
   {# The records strip renders real temperatures server-side as .temp spans, so
      it needs the same converter the SEO pages use or they'd stay in °F while
      the toggle says °C. Both import units.js, which the module loader dedupes. #}