fix: use local storage for oauth (#1421)

the angular-oauth2-oidc library uses session storage by default. This
means that once you've closed the tab, the info is lost and you must log
in again. This change switches it to local storage so that it can be
persisted.

Fixes #1379

booklore-ui/src/main.ts

@@ -13,9 +13,14 @@ import Aura from '@primeng/themes/aura';
 import {routes} from './app/app.routes';
 import {AuthInterceptorService} from './app/core/security/auth-interceptor.service';
 import {AuthService, websocketInitializer} from './app/shared/service/auth.service';
-import {provideOAuthClient} from 'angular-oauth2-oidc';
+import {OAuthStorage, provideOAuthClient} from 'angular-oauth2-oidc';
 import {APP_INITIALIZER, provideAppInitializer} from '@angular/core';
 import {initializeAuthFactory} from './app/core/security/auth-initializer';
+
+export function storageFactory(): OAuthStorage {
+  return localStorage;
+}
+
 import {StartupService} from './app/shared/service/startup.service';
 import {provideCharts, withDefaultRegisterables} from 'ng2-charts';
 import ChartDataLabels from 'chartjs-plugin-datalabels';
@@ -37,6 +42,11 @@ bootstrapApplication(AppComponent, {
     },
     provideHttpClient(withInterceptors([AuthInterceptorService])),
     provideOAuthClient(),
+    // Configure OAuth to use localStorage instead of sessionStorage
+    {
+      provide: OAuthStorage,
+      useFactory: storageFactory
+    },
     provideAppInitializer(initializeAuthFactory()),
     provideRouter(routes),
     DialogService,