improvement: rtl direction, solar calendar and persian formatting added for persian users.

frontend/src/lib/labCaseActivityLabels.ts

@@ -1,4 +1,5 @@
 import type { LabCaseActivityItem } from '@/types/lab-case-activity';
+import { APP_DATE, formatAppDateTime } from '@/lib/i18n/format';
 
 type ActivityLabelTranslator = (
   key: string,
@@ -11,12 +12,7 @@ export function formatLabCaseActivityLine(
   locale: string,
 ): string {
   const actor = activity.actorName ?? t('activityUnknownActor');
-  const date = new Date(activity.createdAt).toLocaleString(locale, {
-    month: 'short',
-    day: 'numeric',
-    hour: '2-digit',
-    minute: '2-digit',
-  });
+  const date = formatAppDateTime(activity.createdAt, locale, APP_DATE.activity);
 
   switch (activity.type) {
     case 'CASE_SENT':