fix: agrega propiedades faltantes a sampleUsers en leaderboard y corrige tipado

Author: María Paz Arrieta Landazuri

frontend/src/app/components/types/leaderboard.ts

@@ -0,0 +1,19 @@
+export interface LeaderboardUser {
+  id: string;
+  username: string;
+  name: string;
+  profit: number;
+  rank: number;
+  score: number;
+  change: number;
+  avatar?: string;
+  afpBalance: number;
+  afpName: string;
+  afpFundType: string;
+}
+
+export interface LeaderboardProps {
+  users: LeaderboardUser[];
+  title?: string;
+  subtitle?: string;
+} 

frontend/src/app/leaderboard/page.tsx

@@ -6,35 +6,65 @@ import Leaderboard from '../components/Leaderboard';
 // Sample data - In a real application, this would come from an API
 const sampleUsers = [
   {
+    id: "1",
     username: "Juan Pérez",
+    name: "Juan Pérez",
+    rank: 1,
+    score: 100,
+    change: 0,
+    avatar: '',
     afpBalance: 45000000,
     afpName: "Capital",
     afpFundType: "A",
     profit: 2500000
   },
   {
+    id: "2",
     username: "María González",
+    name: "María González",
+    rank: 2,
+    score: 95,
+    change: 0,
+    avatar: '',
     afpBalance: 38000000,
     afpName: "Habitat",
     afpFundType: "B",
     profit: 1800000
   },
   {
+    id: "3",
     username: "Carlos Rodríguez",
+    name: "Carlos Rodríguez",
+    rank: 3,
+    score: 90,
+    change: 0,
+    avatar: '',
     afpBalance: 42000000,
     afpName: "Cuprum",
     afpFundType: "C",
     profit: 2100000
   },
   {
+    id: "4",
     username: "Ana Martínez",
+    name: "Ana Martínez",
+    rank: 4,
+    score: 85,
+    change: 0,
+    avatar: '',
     afpBalance: 35000000,
     afpName: "ProVida",
     afpFundType: "D",
     profit: 1500000
   },
   {
+    id: "5",
     username: "Pedro Sánchez",
+    name: "Pedro Sánchez",
+    rank: 5,
+    score: 80,
+    change: 0,
+    avatar: '',
     afpBalance: 40000000,
     afpName: "PlanVital",
     afpFundType: "E",