Fix MinIO DPP upload linking to frontend

src/app/dashboard/dpp/page.tsx

@@ -1,4 +1,4 @@
-"use client"
+"use client"
 
 import { fetchWithAuth } from "@/lib/apiClient";
 import { Button } from "@/components/ui/button"
@@ -197,8 +197,12 @@ export default function AIDailyPracticePage() {
               <div className="flex flex-col sm:flex-row gap-2 shrink-0 md:self-center">
                 {isUpcoming ? (
                   <Button disabled variant="outline" size="sm" className="font-bold">Starts Soon</Button>
-                ) : isExpired && !isAttempted ? (
+                ) : isExpired && !isAttempted && !dpp.pdf_url ? (
                   <Button disabled variant="outline" size="sm" className="font-bold bg-secondary/50">Expired</Button>
+                ) : dpp.pdf_url ? (
+                  <Button onClick={() => setSelectedPdfDpp(dpp)} variant="secondary" size="sm" className="rounded-xl bg-[var(--cyan-ai)] text-black hover:bg-[var(--cyan-ai-80)] font-extrabold gap-2 text-xs shadow-[0_0_12px_rgba(12,96,96,0.2)]">
+                    <FileText size={14} className="text-black" /> View PDF
+                  </Button>
                 ) : isAttempted ? (
                   <>
                     <Link href={`/cbt/${dpp.id}/result`}>
@@ -298,7 +302,7 @@ export default function AIDailyPracticePage() {
               style={{minHeight: isFullScreen ? 'calc(100vh - 120px)' : '75vh'}}
             >
               <embed 
-                src={getPdfUrl(selectedPdfDpp.title)} 
+                src={selectedPdfDpp.pdf_url || getPdfUrl(selectedPdfDpp.title)} 
                 type="application/pdf" 
                 className="w-full h-full"
                 style={{height: isFullScreen ? 'calc(100vh - 120px)' : '75vh'}}