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

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

@@ -28,7 +28,7 @@ export function TreatmentRailSection({
       : 'surface-card';
 
   return (
-    <section className={`${shellClass} overflow-hidden`}>
+    <section className={`treatment-rail-section ${shellClass} overflow-hidden`}>
       <button
         type="button"
         onClick={() => setExpanded((open) => !open)}