feat(aanvragen): richer rows (purpose + status) linking to a case-detail page

- Aanvragen rows now show what the aanvraag is for (purpose subtitle) and an
  explicit status label (In behandeling / Goedgekeurd / Afgewezen) alongside the
  reference + submit date, via an expanded aanvraag-view (purposeLabel,
  statusLabel, referentie, detailRows) + spec.
- Rows link to a new /aanvraag/:id case-detail page, so the CIBG chevron shows
  and each aanvraag opens as a (stub) case — it lists soort/waarvoor/status/
  referentie/ingediend in a Datablock, with a note that full handling is future.

GREEN: lint, tokens, 183 tests, build, 137 axe stories. Verified visually
(dashboard aanvragen rows, upload drop-zone, datablock) via Storybook screenshots.

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

src/app/registratie/ui/aanvraag-detail.page.ts

@@ -0,0 +1,50 @@
+import { Component, inject } from '@angular/core';
+import { ActivatedRoute } from '@angular/router';
+import { PageShellComponent } from '@shared/layout/page-shell/page-shell.component';
+import { SkeletonComponent } from '@shared/ui/skeleton/skeleton.component';
+import { AlertComponent } from '@shared/ui/alert/alert.component';
+import { DataBlockComponent } from '@shared/ui/data-block/data-block.component';
+import { DataRowComponent } from '@shared/ui/data-row/data-row.component';
+import { ASYNC } from '@shared/ui/async/async.component';
+import { ApplicationsStore } from '@registratie/application/applications.store';
+import { Aanvraag } from '@registratie/domain/aanvraag';
+import { detailRows } from '@registratie/domain/aanvraag-view';
+
+/** Page: a single aanvraag ("case"). Stub — it renders the aanvraag's known fields
+    (soort, waarvoor, status, referentie, ingediend) in a CIBG Datablock; full case
+    handling is future work. The dashboard "Mijn aanvragen" rows link here. */
+@Component({
+  selector: 'app-aanvraag-detail-page',
+  imports: [PageShellComponent, SkeletonComponent, AlertComponent, DataBlockComponent, DataRowComponent, ...ASYNC],
+  template: `
+    <app-page-shell i18n-heading="@@aanvraagDetail.heading" heading="Aanvraag" backLink="/dashboard">
+      <app-async [data]="store.applications()">
+        <ng-template appAsyncLoaded let-list>
+          @let a = find($any(list));
+          @if (a) {
+            <app-data-block i18n-ariaLabel="@@aanvraagDetail.ariaLabel" ariaLabel="Aanvraaggegevens">
+              @for (row of rows(a); track row.key) {
+                <div app-data-row [key]="row.key" [value]="row.value"></div>
+              }
+            </app-data-block>
+            <app-alert class="app-section" type="info" i18n="@@aanvraagDetail.stub">
+              De volledige afhandeling van deze aanvraag is nog niet beschikbaar in deze POC.
+            </app-alert>
+          } @else {
+            <app-alert type="warning" i18n="@@aanvraagDetail.nietGevonden">Deze aanvraag is niet gevonden.</app-alert>
+          }
+        </ng-template>
+        <ng-template appAsyncLoading>
+          <app-skeleton height="2.5rem" [count]="5" />
+        </ng-template>
+      </app-async>
+    </app-page-shell>
+  `,
+})
+export class AanvraagDetailPage {
+  protected store = inject(ApplicationsStore);
+  private id = inject(ActivatedRoute).snapshot.paramMap.get('id') ?? '';
+
+  protected find = (list: Aanvraag[]): Aanvraag | undefined => list.find((a) => a.id === this.id);
+  protected rows = detailRows;
+}

src/app/registratie/ui/dashboard.page.ts

@@ -43,7 +43,7 @@ import { tasksFromProfile } from '@registratie/domain/tasks';
                 <app-application-list>
                   @for (a of ingediend(); track a.id) {
                     @let row = submittedRow(a);
-                    <li app-application-link animate.enter="app-item-enter" animate.leave="app-item-leave" [heading]="row.heading" [status]="row.status" [subtitle]="row.subtitle"></li>
+                    <li app-application-link animate.enter="app-item-enter" animate.leave="app-item-leave" [heading]="row.heading" [subtitle]="row.subtitle" [status]="row.status" [to]="'/aanvraag/' + a.id"></li>
                   }
                 </app-application-list>
               }