fix(auth): Use Angular Router for post-auth redirects

Replace window.location.href with Router.navigateByUrl() to ensure proper Angular navigation flow after authentication, maintaining state and avoiding full page reloads.

apps/isa-app/src/core/auth/auth.service.ts

@@ -1,11 +1,12 @@
 import { coerceArray } from '@angular/cdk/coercion';
-import { Injectable } from '@angular/core';
+import { inject, Injectable } from '@angular/core';
 import { Config } from '@core/config';
 import { isNullOrUndefined } from '@utils/common';
 import { AuthConfig, OAuthService } from 'angular-oauth2-oidc';
 import { JwksValidationHandler } from 'angular-oauth2-oidc-jwks';
 import { BehaviorSubject } from 'rxjs';
 import { logger } from '@isa/core/logging';
+import { Router } from '@angular/router';
 
 /**
  * Storage key for the URL to redirect to after login
@@ -17,6 +18,7 @@ const REDIRECT_URL_KEY = 'auth_redirect_url';
 })
 export class AuthService {
   #logger = logger(() => ({ service: 'AuthService' }));
+  #router = inject(Router);
 
   #initialized = new BehaviorSubject<boolean>(false);
   get initialized$() {
@@ -48,7 +50,8 @@ export class AuthService {
             this.#logger.debug('Redirecting after authentication', () => ({
               redirectUrl,
             }));
-            window.location.href = redirectUrl;
+
+            this.#router.navigateByUrl(redirectUrl);
           }
         }, 100);
       }