feat: add playlist editing functionality; implement PlaylistEditPage and integrate with playlists service

feat: enhance PlaylistsPage with search, sorting, and playlist creation features; improve UI components and state management

src/App.tsx

@@ -8,6 +8,7 @@ import { AuthCallbackPage } from './pages/AuthCallbackPage'
 import { DashboardPage } from './pages/DashboardPage'
 import { SoundsPage } from './pages/SoundsPage'
 import { PlaylistsPage } from './pages/PlaylistsPage'
+import { PlaylistEditPage } from './pages/PlaylistEditPage'
 import { ExtractionsPage } from './pages/ExtractionsPage'
 import { UsersPage } from './pages/admin/UsersPage'
 import { SettingsPage } from './pages/admin/SettingsPage'
@@ -69,6 +70,11 @@ function AppRoutes() {
           <PlaylistsPage />
         </ProtectedRoute>
       } />
+      <Route path="/playlists/:id/edit" element={
+        <ProtectedRoute>
+          <PlaylistEditPage />
+        </ProtectedRoute>
+      } />
       <Route path="/extractions" element={
         <ProtectedRoute>
           <ExtractionsPage />