changed base project files

src/app/app.config.ts

@@ -1,11 +1,38 @@
-import { ApplicationConfig, provideBrowserGlobalErrorListeners } from '@angular/core';
+import { ApplicationConfig, provideBrowserGlobalErrorListeners, APP_INITIALIZER } from '@angular/core';
 import { provideRouter } from '@angular/router';
+import { provideHttpClient, withInterceptors } from '@angular/common/http';
+import { catchError, of } from 'rxjs';
 
 import { routes } from './app.routes';
+import { httpInterceptor } from './interceptors/http.interceptor';
+import { AuthService } from './services/auth.service';
+
+/**
+ * Initialize auth state on app startup by checking for existing session
+ */
+function initializeAuth(authService: AuthService) {
+  return () => authService.checkSession().pipe(
+    catchError((error) => {
+      // Session check failed - user is not logged in or session expired
+      console.log('No active session or session expired');
+      authService.clearAuthState();
+      return of(null);
+    })
+  );
+}
 
 export const appConfig: ApplicationConfig = {
   providers: [
     provideBrowserGlobalErrorListeners(),
-    provideRouter(routes)
+    provideRouter(routes),
+    provideHttpClient(
+      withInterceptors([httpInterceptor])
+    ),
+    {
+      provide: APP_INITIALIZER,
+      useFactory: initializeAuth,
+      deps: [AuthService],
+      multi: true
+    }
   ]
 };