feat: enhance layout and sidebar functionality with new PageHeader and SidebarContext

src/App.tsx

@@ -1,6 +1,7 @@
 import { AppLayout } from '@/components/AppLayout'
 import { ProtectedRoute } from '@/components/ProtectedRoute'
 import { AuthProvider } from '@/contexts/AuthContext'
+import { Button } from '@/components/ui/button'
 import { ActivityPage } from '@/pages/ActivityPage'
 import { AdminUsersPage } from '@/pages/AdminUsersPage'
 import { DashboardPage } from '@/pages/DashboardPage'
@@ -22,7 +23,7 @@ function App() {
             path="/dashboard"
             element={
               <ProtectedRoute>
-                <AppLayout>
+                <AppLayout title="Dashboard" description="Welcome to your dashboard">
                   <DashboardPage />
                 </AppLayout>
               </ProtectedRoute>
@@ -32,7 +33,7 @@ function App() {
             path="/activity"
             element={
               <ProtectedRoute>
-                <AppLayout>
+                <AppLayout title="Activity" description="View recent activity and logs">
                   <ActivityPage />
                 </AppLayout>
               </ProtectedRoute>
@@ -42,7 +43,7 @@ function App() {
             path="/settings"
             element={
               <ProtectedRoute>
-                <AppLayout>
+                <AppLayout title="Settings" description="Manage your account settings and preferences">
                   <SettingsPage />
                 </AppLayout>
               </ProtectedRoute>
@@ -52,7 +53,13 @@ function App() {
             path="/admin/users"
             element={
               <ProtectedRoute requireAdmin>
-                <AppLayout>
+                <AppLayout 
+                  title="User Management" 
+                  description="Manage users and their permissions"
+                  headerActions={
+                    <Button>Add User</Button>
+                  }
+                >
                   <AdminUsersPage />
                 </AppLayout>
               </ProtectedRoute>