refactor: rename Application → Aanvraag across the wire (Step 1/8)

The wire said Application, the domain said Aanvraag — one aggregate with
two names at every hop. Rename the backend DTOs and the /applications
route to /aanvragen, regenerate the typed client, and rename the frontend
adapter/store to match.

Renamed: ApplicationSummaryDto/DetailDto, CreateApplicationRequest,
SubmitApplicationRequest/Response → Aanvraag* equivalents;
ApplicationsAdapter/Store → AanvragenAdapter/Store;
applications.adapter.ts/applications.store.ts → aanvragen.*.

Left untouched: the admin Case/Zaak vocabulary (/admin/cases,
AdminCasesStore) — a separate read model, not part of this rename; the
internal BigRegister.Domain.Applications namespace and the Applications
EF table (renaming those needs a new EF migration, out of scope here).

Part of the dashboard-readability refactor (see the approved plan).

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

apps/ssp/src/app/registratie/application/draft-sync.ts

@@ -4,11 +4,11 @@ import { Result } from '@shared/kernel/fp';
 import { runSubmit, SUBMIT_FAILED } from '@shared/application/submit';
 import { registerPendingSave } from '@shared/application/pending-saves';
 import type {
-  SubmitApplicationRequest,
-  SubmitApplicationResponse,
+  AanvraagIndienenRequest,
+  AanvraagIndienenResponse,
 } from '@shared/infrastructure/api-client';
 import { AanvraagType } from '@registratie/domain/aanvraag';
-import { ApplicationsAdapter } from '@registratie/infrastructure/applications.adapter';
+import { AanvragenAdapter } from '@registratie/infrastructure/aanvragen.adapter';
 import { findConcept, loadConcept } from './find-concept';
 
 /** What a wizard persists per step: the opaque machine snapshot + progress + docs. */
@@ -46,7 +46,7 @@ const DEBOUNCE_MS = 600; // ponytail: fixed debounce; tune if the sync feels lag
  * Inert without a Router (stories) or when `enabled()` is false — no network, no resume.
  */
 export function createDraftSync(deps: DraftSyncDeps) {
-  const adapter = inject(ApplicationsAdapter);
+  const adapter = inject(AanvragenAdapter);
   const router = inject(Router, { optional: true });
   const route = inject(ActivatedRoute, { optional: true });
   const active = () => deps.enabled() && !!router && !!route;
@@ -190,7 +190,7 @@ export function createDraftSync(deps: DraftSyncDeps) {
     /** Submit through the aanvraag lifecycle: ensure the Concept exists, then
         `POST /applications/{id}/submit` (server sets autoApprovable + transitions).
         Folded into a Result like the old submit-* commands. */
-    submit(body: SubmitApplicationRequest): Promise<Result<string, SubmitApplicationResponse>> {
+    submit(body: AanvraagIndienenRequest): Promise<Result<string, AanvraagIndienenResponse>> {
       return runSubmit(async () => adapter.submit(await ensureId(), body), SUBMIT_FAILED);
     },