feat: wire up /admin/* routing

Adds AdminApp as a lazy-loaded route subtree in App.tsx, mounting
ProtectedRoute, AdminLogin, AdminLayout, and all five CRUD pages built
in Tasks 3-11. Mounted as a sibling of the public Layout route (not
nested under it), since the admin panel has its own AdminLayout
sidebar rather than the public nav/footer.

Manually verified end-to-end against the local Supabase stack: sign-in
redirect guard, all five pages rendering real seeded data, creating and
cancelling a real booking through the UI (confirming the booked_slots
cleanup trigger from the merged Phase 2A follow-up fixes correctly
frees the slot), and sign-out. No console errors across the flow.

Claude-Session: https://claude.ai/code/session_01NhxA4npAXAxmCDEJt6kxSH

.gitignore

@@ -32,3 +32,6 @@ dist-ssr
 # Supabase CLI local artifacts
 supabase/.branches
 supabase/.temp
+
+# Playwright MCP scratch output (screenshots, console logs, page snapshots)
+.playwright-mcp/

src/App.tsx

@@ -6,6 +6,7 @@ import Book from './pages/Book'
 import Rules from './pages/Rules'
 
 const Home = lazy(() => import('./pages/Home'))
+const AdminApp = lazy(() => import('./pages/admin/AdminApp'))
 
 interface AppProps {
   initialEntries?: string[]
@@ -27,6 +28,14 @@ function AppRoutes() {
         <Route path="/book" element={<Book />} />
         <Route path="/rules" element={<Rules />} />
       </Route>
+      <Route
+        path="/admin/*"
+        element={
+          <Suspense fallback={null}>
+            <AdminApp />
+          </Suspense>
+        }
+      />
     </Routes>
   )
 }

src/pages/admin/AdminApp.test.tsx

@@ -0,0 +1,42 @@
+import { render, screen } from '@testing-library/react'
+import { MemoryRouter, Routes, Route } from 'react-router-dom'
+import { describe, it, expect, vi } from 'vitest'
+
+vi.mock('../../hooks/useAdminAuth', () => ({
+  default: () => ({ session: { user: { id: 'admin' } }, loading: false }),
+}))
+vi.mock('../../lib/supabase', () => ({
+  supabase: {
+    auth: { signOut: vi.fn() },
+    from: () => ({
+      select: () => ({ order: () => Promise.resolve({ data: [], error: null }) }),
+    }),
+  },
+}))
+
+import AdminApp from './AdminApp'
+
+describe('AdminApp routing', () => {
+  it('renders the login page at /admin/login', () => {
+    render(
+      <MemoryRouter initialEntries={['/admin/login']}>
+        <Routes>
+          <Route path="/admin/*" element={<AdminApp />} />
+        </Routes>
+      </MemoryRouter>,
+    )
+    expect(screen.getByRole('heading', { name: /admin login/i })).toBeInTheDocument()
+  })
+
+  it('renders the products page (with layout) at /admin/products when authenticated', async () => {
+    render(
+      <MemoryRouter initialEntries={['/admin/products']}>
+        <Routes>
+          <Route path="/admin/*" element={<AdminApp />} />
+        </Routes>
+      </MemoryRouter>,
+    )
+    expect(await screen.findByRole('heading', { name: /^products$/i })).toBeInTheDocument()
+    expect(screen.getByRole('link', { name: /bookings/i })).toBeInTheDocument()
+  })
+})

src/pages/admin/AdminApp.tsx

@@ -0,0 +1,28 @@
+import { Routes, Route } from 'react-router-dom'
+import ProtectedRoute from '../../components/ProtectedRoute'
+import AdminLogin from './AdminLogin'
+import AdminLayout from './AdminLayout'
+import AdminProducts from './AdminProducts'
+import AdminServices from './AdminServices'
+import AdminSchedule from './AdminSchedule'
+import AdminBookings from './AdminBookings'
+import AdminInquiries from './AdminInquiries'
+
+function AdminApp() {
+  return (
+    <Routes>
+      <Route path="login" element={<AdminLogin />} />
+      <Route element={<ProtectedRoute />}>
+        <Route element={<AdminLayout />}>
+          <Route path="products" element={<AdminProducts />} />
+          <Route path="services" element={<AdminServices />} />
+          <Route path="schedule" element={<AdminSchedule />} />
+          <Route path="bookings" element={<AdminBookings />} />
+          <Route path="inquiries" element={<AdminInquiries />} />
+        </Route>
+      </Route>
+    </Routes>
+  )
+}
+
+export default AdminApp