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

frontend/src/components/ui/treatment/CaseSentLabel.tsx

@@ -1,6 +1,6 @@
 'use client';
 
-import { useTranslations } from 'next-intl';
+import { useLocale, useTranslations } from 'next-intl';
 import { formatCaseSentLines } from '@/components/treatment/caseSendLabel';
 import type { LabCaseSendInfo, LinkedOrganizationOption } from '@/types/treatment';
 
@@ -16,6 +16,7 @@ interface CaseSentLabelProps {
 }
 
 export function CaseSentLabel({ treatmentCase, orgs, className = 'text-xs text-text-muted' }: CaseSentLabelProps) {
+  const locale = useLocale();
   const t = useTranslations('treatment');
   const organizationIds =
     treatmentCase.sendToOrganizationIds ??
@@ -24,7 +25,7 @@ export function CaseSentLabel({ treatmentCase, orgs, className = 'text-xs text-t
     organizationIds,
     sentAt: treatmentCase.sentAt ?? null,
     orgs,
-  }, t);
+  }, t, locale);
 
   if (lines.length === 0) return null;