feat(WP-67): merge behandelportal into this repo as a monorepo

Restructures into apps/ssp + apps/behandelportal (two Angular projects)
plus libs/shared + libs/beheer (cross-app libraries), replacing WP-61's
separate sibling repo. That split had already produced real drift: a
hand-vendored copy of the backend's OpenAPI doc, a shared/ui+layout tree
forked and silently diverging (7 files), and beheer + the styles.scss
token bridge duplicated byte-for-byte across both repos.

- git mv the SSP's src/app/* into apps/ssp/; fold shared/, beheer/,
  environments/, the Storybook docs/*.mdx, and styles.scss into
  libs/shared + libs/beheer (all confirmed identical between the two
  repos before merging). auth stays deliberately duplicated per
  ADR-0002 (actor-specific, expected to diverge) - amended there.
- One generated API client (libs/shared), no more vendored swagger.json.
- .dependency-cruiser split into a base factory + one config per app,
  and Storybook into .storybook-ssp/.storybook-behandelportal - both
  forced by the @auth/* alias resolving to different directories per app.
- SiteHeaderComponent/ShellComponent gained HEADER_NAV_ITEMS/
  HEADER_ADMIN_LINKS/DEBUG_PANEL injection tokens so each app supplies
  its own nav/admin-links/dev-panel instead of one being hardcoded.
- CLAUDE.md, ARCHITECTURE.md, dependencies.md, and ADR-0002 updated;
  WP-67 backlog entry documents the full decision trail.

npm run ci green (lint, dep:check x2, 360 tests across ssp/
behandelportal/shared/beheer, both localized builds, backend tests,
snippet + api-client drift); both dev servers, both Storybook
instances, and docker compose verified working.

The old sibling repo (/home/eho/repos/behandelportal) is left
untouched, not deleted.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

apps/ssp/src/app/registratie/ui/registration-detail.page.ts

@@ -0,0 +1,49 @@
+import { Component, computed, inject } from '@angular/core';
+import { PageShellComponent } from '@shared/layout/page-shell/page-shell.component';
+import { SkeletonComponent } from '@shared/ui/skeleton/skeleton.component';
+import { ASYNC } from '@shared/ui/async/async.component';
+import { RegistrationSummaryComponent } from '@registratie/ui/registration-summary/registration-summary.component';
+import { ChangeRequestFormComponent } from '@registratie/ui/change-request-form/change-request-form.component';
+import { BigProfileStore } from '@registratie/application/big-profile.store';
+
+@Component({
+  selector: 'app-registration-detail-page',
+  imports: [
+    PageShellComponent,
+    SkeletonComponent,
+    ...ASYNC,
+    RegistrationSummaryComponent,
+    ChangeRequestFormComponent,
+  ],
+  template: `
+    <app-page-shell
+      i18n-heading="@@registratieDetail.heading"
+      heading="Mijn gegevens"
+      backLink="/dashboard"
+    >
+      <app-async [data]="store.profile()">
+        <ng-template appAsyncLoaded>
+          @if (profile(); as p) {
+            <app-registration-summary [reg]="p.registration" />
+          }
+        </ng-template>
+        <ng-template appAsyncLoading>
+          <app-skeleton height="2.5rem" [count]="6" />
+        </ng-template>
+      </app-async>
+
+      <div class="app-section">
+        <app-change-request-form [brpAdres]="profile()?.person?.adres" />
+      </div>
+    </app-page-shell>
+  `,
+})
+export class RegistrationDetailPage {
+  protected store = inject(BigProfileStore);
+
+  /** See DashboardPage's `profile` for why this narrows via a computed instead of `let-`. */
+  protected readonly profile = computed(() => {
+    const rd = this.store.profile();
+    return rd.tag === 'Success' ? rd.value : undefined;
+  });
+}