Remove HashRouter wrapper from App component to simplify routing

client/src/main.tsx

@@ -1,6 +1,5 @@
 import { StrictMode } from 'react';
 import { createRoot } from 'react-dom/client';
-import { HashRouter } from 'react-router-dom';
 import './index.css';
 import App from './App';
 import { initKeycloak } from './auth/keycloak';
@@ -10,9 +9,7 @@ async function bootstrap() {
 
   createRoot(document.getElementById('root')!).render(
     <StrictMode>
-      <HashRouter>
-        <App />
-      </HashRouter>
+      <App />
     </StrictMode>,
   );
 }