added new exchanges system

apps/web-app/src/app/App.tsx

@@ -0,0 +1,31 @@
+import { Layout } from '@/components/layout';
+import { DashboardPage } from '@/features/dashboard';
+import { ExchangesPage } from '@/features/exchanges';
+import { BrowserRouter, Navigate, Route, Routes } from 'react-router-dom';
+
+export function App() {
+  return (
+    <BrowserRouter>
+      <Routes>
+        <Route path="/" element={<Layout />}>
+          <Route index element={<Navigate to="/dashboard" replace />} />
+          <Route path="dashboard" element={<DashboardPage />} />
+          <Route path="exchanges" element={<ExchangesPage />} />
+          <Route
+            path="portfolio"
+            element={<div className="p-4">Portfolio Page - Coming Soon</div>}
+          />
+          <Route
+            path="strategies"
+            element={<div className="p-4">Strategies Page - Coming Soon</div>}
+          />
+          <Route
+            path="analytics"
+            element={<div className="p-4">Analytics Page - Coming Soon</div>}
+          />
+          <Route path="settings" element={<div className="p-4">Settings Page - Coming Soon</div>} />
+        </Route>
+      </Routes>
+    </BrowserRouter>
+  );
+}

apps/web-app/src/app/index.ts

@@ -0,0 +1 @@
+export { App } from './App';