feat(portal-self-service): implement the DigiD registration submit page (refs #67)

RegistrationPage shows the signed-in BSN and submits to the BFF via the generated
api-client, confirming with the returned reference; built from NL Design System
(Utrecht) components. Wire the guarded route + app providers (DigiD OIDC + token
interceptor + HttpClient), the NL DS theme, and lang=nl. Component tests
(Testing Library) + axe (WCAG 2.1 AA) pass; a guard test covers libs/auth. Replace
the demo eslint depConstraints (scope:shop/shared) with a permissive default.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/self-service/src/app/app.config.ts

@@ -1,10 +1,22 @@
+import { provideHttpClient, withInterceptors } from '@angular/common/http';
 import {
   ApplicationConfig,
   provideBrowserGlobalErrorListeners,
 } from '@angular/core';
 import { provideRouter } from '@angular/router';
+import { authInterceptor, provideDigiadAuth } from 'auth';
 import { appRoutes } from './app.routes';
 
 export const appConfig: ApplicationConfig = {
-  providers: [provideBrowserGlobalErrorListeners(), provideRouter(appRoutes)],
+  providers: [
+    provideBrowserGlobalErrorListeners(),
+    provideRouter(appRoutes),
+    provideHttpClient(withInterceptors([authInterceptor()])),
+    // Dev defaults (host ports). The compose-served app overrides these for the stack (S-08d).
+    provideDigiadAuth({
+      authority: 'http://localhost:8180/realms/digid',
+      redirectUrl: typeof window !== 'undefined' ? window.location.origin : '/',
+      secureApiOrigin: 'http://localhost:8080',
+    }),
+  ],
 };

apps/self-service/src/app/app.html

@@ -1,5 +1 @@
-<main>
-  <h1>Zelfservice — BIG-registratie</h1>
-  <p>Portaal voor zorgprofessionals. Inloggen en indienen volgt in S-08c.</p>
-  <router-outlet></router-outlet>
-</main>
+<router-outlet></router-outlet>

apps/self-service/src/app/app.routes.ts

@@ -1,3 +1,7 @@
 import { Route } from '@angular/router';
+import { authenticatedGuard } from 'auth';
+import { RegistrationPage } from './registration/registration-page';
 
-export const appRoutes: Route[] = [];
+export const appRoutes: Route[] = [
+  { path: '', component: RegistrationPage, canActivate: [authenticatedGuard] },
+];

apps/self-service/src/app/app.spec.ts

@@ -1,17 +1,15 @@
-import { TestBed } from '@angular/core/testing';
+import { provideRouter } from '@angular/router';
+import { render, screen } from '@testing-library/angular';
 import { App } from './app';
 
 describe('App', () => {
-  beforeEach(async () => {
-    await TestBed.configureTestingModule({
-      imports: [App],
-    }).compileComponents();
-  });
+  it('renders the router outlet shell', async () => {
+    const { container } = await render(App, {
+      providers: [provideRouter([])],
+    });
 
-  it('renders the self-service portal heading', async () => {
-    const fixture = TestBed.createComponent(App);
-    await fixture.whenStable();
-    const compiled = fixture.nativeElement as HTMLElement;
-    expect(compiled.querySelector('h1')?.textContent).toContain('Zelfservice');
+    // The shell is a thin host for routed pages (the RegistrationPage owns the heading).
+    expect(container.querySelector('router-outlet')).toBeTruthy();
+    expect(screen).toBeTruthy();
   });
 });

apps/self-service/src/app/registration/registration-page.html

@@ -0,0 +1,22 @@
+<main utrecht-document class="utrecht-theme">
+  <utrecht-article>
+    <utrecht-heading-1>Zelfservice — BIG-registratie</utrecht-heading-1>
+
+    @if (submitted()) {
+      <p utrecht-paragraph role="status">
+        Uw registratie is ontvangen. Referentie: {{ reference() }}.
+      </p>
+    } @else {
+      <p utrecht-paragraph>U bent ingelogd met BSN {{ bsn() }}.</p>
+      <button
+        utrecht-button
+        appearance="primary-action-button"
+        type="button"
+        [disabled]="submitting()"
+        (click)="submit()"
+      >
+        Registratie indienen
+      </button>
+    }
+  </utrecht-article>
+</main>

apps/self-service/src/app/registration/registration-page.spec.ts

@@ -44,8 +44,15 @@ describe('RegistrationPage', () => {
   });
 
   it('has no WCAG 2.1 AA violations on the submit page', async () => {
+    // The portal is Dutch; the real index.html sets lang. Set it here so the document-level
+    // html-has-lang rule reflects the app, not the bare jsdom document.
+    document.documentElement.lang = 'nl';
     const { container } = await render(RegistrationPage, { providers: providers().providers });
-    const results = await axe(container);
+
+    const results = await axe(container, {
+      runOnly: { type: 'tag', values: ['wcag2a', 'wcag2aa', 'wcag21a', 'wcag21aa'] },
+    });
+
     expect(results.violations).toEqual([]);
   });
 });

apps/self-service/src/app/registration/registration-page.ts

@@ -1,9 +1,33 @@
-import { Component } from '@angular/core';
+import { Component, inject, signal } from '@angular/core';
+import { BffApiV1Service, type SubmitAccepted } from 'api-client';
+import { AuthService } from 'auth';
+import { UtrechtComponentsModule } from 'ui';
 
-// STUB (red): no bsn, no submit — the component/axe tests fail until the green commit.
+/**
+ * The self-service submit page: a signed-in zorgprofessional confirms and submits their BIG
+ * registration. The bsn comes from the DigiD token (not a form field), so this is a confirm-and-
+ * submit flow that posts to the BFF and shows the returned reference (ADR-0010; S-08c).
+ */
 @Component({
   selector: 'app-registration-page',
-  imports: [],
-  template: '',
+  imports: [UtrechtComponentsModule],
+  templateUrl: './registration-page.html',
 })
-export class RegistrationPage {}
+export class RegistrationPage {
+  private readonly auth = inject(AuthService);
+  private readonly bff = inject(BffApiV1Service);
+
+  protected readonly bsn = this.auth.bsn;
+  protected readonly submitting = signal(false);
+  protected readonly reference = signal<string | undefined>(undefined);
+  protected readonly submitted = signal(false);
+
+  submit(): void {
+    this.submitting.set(true);
+    this.bff.postSelfServiceRegistrations().subscribe((accepted: SubmitAccepted) => {
+      this.reference.set(accepted.registrationId);
+      this.submitted.set(true);
+      this.submitting.set(false);
+    });
+  }
+}