fix(leaderboard): fix leaderboard scheme for questions and streaks

src/pages/student/Home.tsx

@@ -17,6 +17,7 @@ import {
   DrawerContent,
   DrawerTrigger,
 } from "../../components/ui/drawer";
+import { useExamConfigStore } from "../../stores/useExamConfigStore";
 
 // ─── Shared blob/dot background (same as break/results screens) ────────────────
 const DOTS = [
@@ -332,6 +333,7 @@ const PAGE_SIZE = 2;
 export const Home = () => {
   const user = useAuthStore((state) => state.user);
   const navigate = useNavigate();
+  const { userMetrics } = useExamConfigStore();
 
   const [practiceSheets, setPracticeSheets] = useState<PracticeSheet[]>([]);
   const [notStartedSheets, setNotStartedSheets] = useState<PracticeSheet[]>([]);
@@ -465,7 +467,7 @@ export const Home = () => {
             {/* Streak chip */}
             <div className="h-chip streak">
               <Flame size={18} style={{ fill: "#fca5a5" }} />
-              <span>5</span>
+              <span>{userMetrics.streak}</span>
             </div>
 
             {/* Score chip */}