creates application

frontend/src/App.tsx

@@ -0,0 +1,40 @@
+import { Routes, Route, Navigate } from 'react-router-dom';
+import { AuthProvider } from './contexts/AuthContext';
+import { TimerProvider } from './contexts/TimerContext';
+import { Layout } from './components/Layout';
+import { ProtectedRoute } from './components/ProtectedRoute';
+import { LoginPage } from './pages/LoginPage';
+import { AuthCallbackPage } from './pages/AuthCallbackPage';
+import { DashboardPage } from './pages/DashboardPage';
+import { TimeEntriesPage } from './pages/TimeEntriesPage';
+import { ClientsPage } from './pages/ClientsPage';
+import { ProjectsPage } from './pages/ProjectsPage';
+
+function App() {
+  return (
+    <AuthProvider>
+      <TimerProvider>
+        <Routes>
+          <Route path="/login" element={<LoginPage />} />
+          <Route path="/auth/callback" element={<AuthCallbackPage />} />
+          <Route
+            path="/"
+            element={
+              <ProtectedRoute>
+                <Layout />
+              </ProtectedRoute>
+            }
+          >
+            <Route index element={<Navigate to="/dashboard" replace />} />
+            <Route path="dashboard" element={<DashboardPage />} />
+            <Route path="time-entries" element={<TimeEntriesPage />} />
+            <Route path="clients" element={<ClientsPage />} />
+            <Route path="projects" element={<ProjectsPage />} />
+          </Route>
+        </Routes>
+      </TimerProvider>
+    </AuthProvider>
+  );
+}
+
+export default App;