Initial commit: Plataforma de Economía

Features:
- React 18 + TypeScript frontend with Vite
- Go + Gin backend API
- PostgreSQL database
- JWT authentication with refresh tokens
- User management (admin panel)
- Docker containerization
- Progress tracking system
- 4 economic modules structure

Fixed:
- Login with username or email
- User creation without required email
- Database nullable timestamps
- API response field naming

frontend/src/App.tsx

@@ -0,0 +1,70 @@
+import { BrowserRouter, Routes, Route, Navigate } from 'react-router-dom';
+import { useAuthStore } from './stores/authStore';
+import { Login } from './pages/Login';
+import { Dashboard } from './pages/Dashboard';
+import { Modulos } from './pages/Modulos';
+import { Modulo } from './pages/Modulo';
+import { AdminPanel } from './pages/admin/AdminPanel';
+
+function ProtectedRoute({ children }: { children: React.ReactNode }) {
+  const { isAuthenticated, isLoading } = useAuthStore();
+
+  if (isLoading) {
+    return (
+      <div className="min-h-screen flex items-center justify-center">
+        <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-primary"></div>
+      </div>
+    );
+  }
+
+  if (!isAuthenticated) {
+    return <Navigate to="/login" replace />;
+  }
+
+  return <>{children}</>;
+}
+
+function App() {
+  return (
+    <BrowserRouter>
+      <Routes>
+        <Route path="/login" element={<Login />} />
+        <Route
+          path="/"
+          element={
+            <ProtectedRoute>
+              <Dashboard />
+            </ProtectedRoute>
+          }
+        />
+        <Route
+          path="/modulos"
+          element={
+            <ProtectedRoute>
+              <Modulos />
+            </ProtectedRoute>
+          }
+        />
+        <Route
+          path="/modulo/:numero"
+          element={
+            <ProtectedRoute>
+              <Modulo />
+            </ProtectedRoute>
+          }
+        />
+        <Route
+          path="/admin"
+          element={
+            <ProtectedRoute>
+              <AdminPanel />
+            </ProtectedRoute>
+          }
+        />
+        <Route path="*" element={<Navigate to="/" replace />} />
+      </Routes>
+    </BrowserRouter>
+  );
+}
+
+export default App;