feat: add comprehensive GitHub workflow and development tools

app/core/urls.py

@@ -0,0 +1,18 @@
+from django.contrib import admin
+from django.urls import path, include
+from django.conf import settings
+from django.conf.urls.static import static
+from django.contrib.auth import views as auth_views
+from stiftung.views import home
+
+urlpatterns = [
+    path('', include('stiftung.urls')),
+    path('admin/', admin.site.urls),
+    
+    # Authentication URLs
+    path('login/', auth_views.LoginView.as_view(template_name='registration/login.html'), name='login'),
+    path('logout/', auth_views.LogoutView.as_view(), name='logout'),
+]
+
+if settings.DEBUG:
+    urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)