Maintenance log book app — initial scaffold

Multi-department fault log: NewBook-synced room locations + manual
locations with categories, six-state task flow (submitted/in progress/
hold-parts/hold-later/temporary fix/fixed), photos per stage, priorities
with unusable flag and per-task NewBook out-of-order push, costs on
resolve, comment/audit thread, recurring task templates with
note-to-template carryover, asset register, contractor register with
document attachments, staff/contractor allocation, occupancy-aware
summary filter, searchable history with CSV export, email notifications.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

frontend/src/App.tsx

@@ -0,0 +1,32 @@
+import { BrowserRouter, Routes, Route, Navigate } from 'react-router-dom'
+import AuthGate from './components/AuthGate'
+import Layout from './components/Layout'
+import Summary from './pages/Summary'
+import HistoryPage from './pages/History'
+import Assets from './pages/Assets'
+import Contractors from './pages/Contractors'
+import Recurring from './pages/Recurring'
+import Locations from './pages/Locations'
+import Settings from './pages/Settings'
+
+export default function App() {
+  return (
+    <BrowserRouter basename="/maintenance">
+      <AuthGate>
+        <Layout>
+          <Routes>
+            <Route path="/" element={<Navigate to="/summary" replace />} />
+            <Route path="/summary" element={<Summary />} />
+            <Route path="/history" element={<HistoryPage />} />
+            <Route path="/assets" element={<Assets />} />
+            <Route path="/contractors" element={<Contractors />} />
+            <Route path="/recurring" element={<Recurring />} />
+            <Route path="/locations" element={<Locations />} />
+            <Route path="/settings" element={<Settings />} />
+            <Route path="*" element={<Navigate to="/summary" replace />} />
+          </Routes>
+        </Layout>
+      </AuthGate>
+    </BrowserRouter>
+  )
+}