feat: add multi-source breed encyclopedia and two-hour refresh sessions

pets-be/web/admin/src/main.tsx

@@ -2,9 +2,15 @@ import { StrictMode } from 'react'
 import { createRoot } from 'react-dom/client'
 import './index.css'
 import App from './App.tsx'
+import { BrowserRouter, Routes, Route, Navigate } from 'react-router-dom'
 
 createRoot(document.getElementById('root')!).render(
   <StrictMode>
-    <App />
+    <BrowserRouter><Routes>
+      <Route path="/" element={<Navigate to="/admin/overview" replace />} />
+      <Route path="/admin" element={<Navigate to="/admin/overview" replace />} />
+      <Route path="/admin/:section" element={<App />} />
+      <Route path="*" element={<Navigate to="/admin/overview" replace />} />
+    </Routes></BrowserRouter>
   </StrictMode>,
 )