Step 2 (i18n): $localize sweep + JA_NEE dedup (M3, M4)

Wrap every user-facing Dutch string in Angular's first-party i18n — `i18n`/
`i18n-<attr>` in templates, `$localize` in TS (value-objects, machines, commands,
label constants, shared-component defaults). Source locale stays nl; a second
locale is now a translation file, not a code change.

- M3: ~145 strings localized with stable @@ ids across registratie,
  herregistratie, auth, shared/ui, shared/layout. Skipped: showcase, debug-state,
  scenario interceptor, generated client, specs/stories, raw status enum tags,
  internal parse* diagnostics.
- M4: single shared JA_NEE (localized labels) in radio-group; both wizard copies
  removed.

Gate green: lint, check:tokens, build, test 77/77.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/app/auth/ui/login-form/login-form.component.ts

@@ -10,15 +10,15 @@ import { ButtonComponent } from '@shared/ui/button/button.component';
   imports: [FormsModule, FormFieldComponent, TextInputComponent, ButtonComponent],
   template: `
     <form (ngSubmit)="submitted.emit(bsn)" class="app-form app-form-panel">
-      <app-form-field label="BSN" fieldId="bsn" required description="9 cijfers (demo: vul iets in)">
+      <app-form-field i18n-label="@@login.bsnLabel" label="BSN" fieldId="bsn" required i18n-description="@@login.bsnDescription" description="9 cijfers (demo: vul iets in)">
         <app-text-input inputId="bsn" [(ngModel)]="bsn" name="bsn" placeholder="123456789" />
       </app-form-field>
 
-      <app-form-field label="Wachtwoord" fieldId="pw" required>
+      <app-form-field i18n-label="@@login.wachtwoordLabel" label="Wachtwoord" fieldId="pw" required>
         <app-text-input inputId="pw" type="password" [(ngModel)]="password" name="pw" />
       </app-form-field>
 
-      <app-button type="submit" variant="primary">Inloggen met DigiD</app-button>
+      <app-button type="submit" variant="primary" i18n="@@login.submit">Inloggen met DigiD</app-button>
     </form>
   `,
 })