Move _nav_entries_oob.html to shared templates instead of duplicating

Used by both blog and events — belongs in shared/browser/templates
where the ChoiceLoader fallback resolves it for all apps.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

events/templates/_types/post/admin/_nav_entries_oob.html

@@ -1,80 +0,0 @@
-{# OOB swap for nav entries and calendars when toggling associations or editing calendars #}
-{% import 'macros/links.html' as links %}
-
-{# Associated Entries and Calendars - vertical on mobile, horizontal with arrows on desktop #}
-{% if (associated_entries and associated_entries.entries) or calendars %}
-  <div class="flex flex-col sm:flex-row sm:items-center gap-2 border-r border-stone-200 mr-2 sm:max-w-2xl"
-       id="entries-calendars-nav-wrapper"
-       hx-swap-oob="true">
-    {# Left scroll arrow - desktop only #}
-    <button
-      class="entries-nav-arrow hidden flex-shrink-0 p-2 hover:bg-stone-200 rounded"
-      aria-label="Scroll left"
-      _="on click
-         set #associated-items-container.scrollLeft to #associated-items-container.scrollLeft - 200">
-      <i class="fa fa-chevron-left"></i>
-    </button>
-
-    <div id="associated-items-container"
-         class="overflow-y-auto sm:overflow-x-auto sm:overflow-y-visible scrollbar-hide max-h-[50vh] sm:max-h-none"
-         style="scroll-behavior: smooth;"
-         _="on load or scroll
-            if window.innerWidth >= 640 and my.scrollWidth > my.clientWidth
-              remove .hidden from .entries-nav-arrow
-              add .flex to .entries-nav-arrow
-            else
-              add .hidden to .entries-nav-arrow
-              remove .flex from .entries-nav-arrow
-            end">
-      <div class="flex flex-col sm:flex-row gap-1">
-        {# Calendar entries #}
-        {% if associated_entries and associated_entries.entries %}
-          {% for entry in associated_entries.entries %}
-            {% set _entry_path = '/' + post.slug + '/calendars/' + entry.calendar_slug + '/' + entry.start_at.year|string + '/' + entry.start_at.month|string + '/' + entry.start_at.day|string + '/entries/' + entry.id|string + '/' %}
-            <a
-              href="{{ events_url(_entry_path) }}"
-              class="{{styles.nav_button_less_pad}}">
-              <div class="w-8 h-8 rounded bg-stone-200 flex-shrink-0"></div>
-              <div class="flex-1 min-w-0">
-                <div class="font-medium truncate">{{ entry.name }}</div>
-                <div class="text-xs text-stone-600 truncate">
-                  {{ entry.start_at.strftime('%b %d, %Y at %H:%M') }}
-                  {% if entry.end_at %} – {{ entry.end_at.strftime('%H:%M') }}{% endif %}
-                </div>
-              </div>
-            </a>
-          {% endfor %}
-        {% endif %}
-        {# Calendar links #}
-        {% if calendars %}
-          {% for calendar in calendars %}
-            {% set local_href=events_url('/' + post.slug + '/calendars/' + calendar.slug + '/') %}
-            <a
-              href="{{ local_href }}"
-              class="{{styles.nav_button_less_pad}}">
-              <i class="fa fa-calendar" aria-hidden="true"></i>
-              <div>{{calendar.name}}</div>
-            </a>
-          {% endfor %}
-        {% endif %}
-      </div>
-    </div>
-
-    <style>
-    .scrollbar-hide::-webkit-scrollbar { display: none; }
-    .scrollbar-hide { -ms-overflow-style: none; scrollbar-width: none; }
-    </style>
-
-    {# Right scroll arrow - desktop only #}
-    <button
-      class="entries-nav-arrow hidden flex-shrink-0 p-2 hover:bg-stone-200 rounded"
-      aria-label="Scroll right"
-      _="on click
-         set #associated-items-container.scrollLeft to #associated-items-container.scrollLeft + 200">
-      <i class="fa fa-chevron-right"></i>
-    </button>
-  </div>
-{% else %}
-  {# Empty placeholder to remove nav items when all are disassociated/deleted #}
-  <div id="entries-calendars-nav-wrapper" hx-swap-oob="true"></div>
-{% endif %}