feat(infra): beheer portal in compose + e2e + ADR-0025 + demo note (refs #130)

tests/e2e/catalogus.spec.ts

@@ -0,0 +1,19 @@
+import { expect, test } from '@playwright/test';
+
+// S-15a walking skeleton: a beheerder logs in to the beheer portal (medewerker realm) and sees the
+// read-only ZTC catalogus. The verify stack seeds and publishes the BIG-REGISTRATIE zaaktype (the
+// same one verify-domain relies on), so it must appear in the catalogus. Runs against the shared
+// verify stack, so it asserts on that stable seeded zaaktype rather than anything test-specific.
+test('a beheerder sees the published zaaktypen in the catalogus', async ({ page }) => {
+  await page.goto('http://beheer/');
+
+  // The beheer portal redirects to the Keycloak medewerker realm login (same realm as behandel).
+  await page.locator('#username').fill('bram-beheerder');
+  await page.locator('#password').fill('test123');
+  await page.locator('#kc-login').click();
+
+  await expect(page.getByRole('heading', { name: /Catalogus/i })).toBeVisible();
+
+  // The seeded, published BIG zaaktype is shown by its business identificatie.
+  await expect(page.getByText('BIG-REGISTRATIE')).toBeVisible();
+});