Fix OG image, CBT filters, syllabus split, and trial duration

src/app/dashboard/layout.tsx

@@ -376,7 +376,7 @@ export default function DashboardLayout({ children }: { children: ReactNode }) {
         {trialInfo.isTrialActive && (
           <div className="bg-primary text-primary-foreground px-4 py-2.5 text-center text-sm font-bold flex justify-center items-center gap-2 shadow-sm shrink-0 z-30">
             <span className="size-2 rounded-full bg-primary-foreground animate-pulse"></span>
-            15 Days Free Trial — Day {trialInfo.trialDayNumber}
+            {trialInfo.trialTotalDays} Days Free Trial — Day {trialInfo.trialDayNumber}
           </div>
         )}