feat: staff work schedule — weekly grid for all roles, shift assignment, day off marking

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/App.tsx

@@ -39,6 +39,7 @@ import { GuestRoomServicePage } from './pages/GuestRoomServicePage'
 import { ResetPasswordPage } from './pages/ResetPasswordPage'
 import { TvWelcomePage } from './pages/TvWelcomePage'
 import { TechnicalPage } from './pages/TechnicalPage'
+import { SchedulePage } from './pages/SchedulePage'
 
 export default function App() {
   return (
@@ -79,6 +80,7 @@ export default function App() {
                 <Route path="/room-categories" element={<RoomCategoriesPage />} />
                 <Route path="/documents"       element={<DocumentsPage />} />
                 <Route path="/users"           element={<UsersPage />} />
+                <Route path="/schedule"       element={<SchedulePage />} />
                 <Route path="/guests"          element={<GuestsPage />} />
                 <Route path="/tariffs"         element={<TariffsPage />} />
                 <Route path="/dynamic-pricing" element={<DynamicPricingPage />} />