Fix

assets/bookmark.njk

@@ -0,0 +1,26 @@
+{# Returned on its own by GET/POST/DELETE api/bookmark, and included in the
+   shell so a normal navigation paints the bookmark without a second request.
+   Both paths must produce the same element for the swap to be seamless.
+
+   outerHTML is the swap, so this element re-declares its own htmx attributes
+   every time: the replacement is what receives the next event. hx-target is
+   inherited, and the shell points it at #content, so "this" is not the
+   default here -- it has to be said.
+
+   Empty state is d-none, not the hidden attribute: Bootstrap declares
+   .d-flex after Reboot's [hidden] rule, both !important and at the same
+   specificity, so the utility would win. #}
+<span class="bookmark navbar-text {% if mark %}d-flex{% else %}d-none{% endif %} align-items-center gap-2"
+   id="bookmark"
+   hx-get="api/bookmark" hx-trigger="bookmark-load from:body"
+   hx-target="this" hx-swap="outerHTML">
+{%- if mark %}
+  <span class="bookmark-label badge text-bg-secondary">Bookmark</span>
+  {# Not boosted: a real navigation lets the browser scroll to the verse
+     anchor, which a swap into #content would not do. #}
+  <a class="bookmark-link link-light text-truncate" href="{{ mark.href }}"
+     hx-boost="false">{{ mark.ref }}</a>
+  <button type="button" class="bookmark-clear btn btn-sm btn-outline-light py-0"
+          hx-delete="api/bookmark" hx-target="#bookmark" hx-swap="outerHTML">Clear</button>
+{%- endif %}
+</span>