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frontend/src/App.jsx

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+import React from 'react'
+import { BrowserRouter as Router, Routes, Route } from 'react-router-dom'
+import { Toaster } from 'sonner'
+import Layout from '@/components/layout/Layout'
+import Dashboard from '@/pages/Dashboard'
+import Settings from '@/pages/Settings'
+import { useTheme } from '@/hooks/use-theme'
+
+export default function App() {
+    const { theme, toggleTheme } = useTheme();
+
+    return (
+        <Router>
+            <Toaster position="bottom-right" theme={theme} />
+            <Layout theme={theme} toggleTheme={toggleTheme}>
+                <Routes>
+                    <Route path="/" element={<Dashboard />} />
+                    <Route path="/settings" element={<Settings />} />
+                </Routes>
+            </Layout>
+        </Router>
+    );
+}