Add centralized amenities directory and hourly booking example

- AmenitiesContext: shared amenities list with add/edit/delete, available app-wide
- RoomsPage: collapsible Справочник удобств section (add/rename/delete)
- RoomModal + RoomCategoriesPage: use amenities from context, no hardcoded lists
- RoomCategoriesPage: removed custom amenity input (use справочник instead)
- mockData: room 103 now has allowHourly=true, added sample hourly booking (today, 10-13ч)

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

src/App.tsx

@@ -2,6 +2,7 @@ import { BrowserRouter, Routes, Route, Navigate } from 'react-router-dom'
 import { ThemeProvider } from './contexts/ThemeContext'
 import { AuthProvider } from './contexts/AuthContext'
 import { ModulesProvider } from './contexts/ModulesContext'
+import { AmenitiesProvider } from './contexts/AmenitiesContext'
 import { AppLayout } from './layouts/AppLayout'
 import { LoginPage } from './pages/LoginPage'
 import { CalendarPage } from './pages/CalendarPage'
@@ -38,6 +39,7 @@ export default function App() {
     <ThemeProvider>
       <AuthProvider>
         <ModulesProvider>
+          <AmenitiesProvider>
           <BrowserRouter>
             <Routes>
               {/* Public */}
@@ -86,6 +88,7 @@ export default function App() {
               <Route path="*" element={<Navigate to="/login" replace />} />
             </Routes>
           </BrowserRouter>
+          </AmenitiesProvider>
         </ModulesProvider>
       </AuthProvider>
     </ThemeProvider>