new core.middleware sets cookie for scroll timestamp view to local browser time, w. new corresponding tests in core.tests.UTs.test_middleware; apps.lyric.templatetags.lyric_extras determines timestamp format based on duration elapsed since timestamp; apps.bill.tests.ITs.test_views renamed, now also asserts scroll renders event body and time in columns

src/templates/core/base.html

@@ -146,6 +146,7 @@
         <script src="{% static "apps/applets/applets.js" %}"></script>
         <script src="{% static "apps/dashboard/game-kit.js" %}"></script>
         <script>
+            document.cookie = 'user_tz=' + Intl.DateTimeFormat().resolvedOptions().timeZone + '; path=/; SameSite=Lax';
             document.body.addEventListener('htmx:configRequest', function(evt) {
                 evt.detail.headers['X-CSRFToken'] = getCookie('csrftoken');
             });