style: format frontend, docs and skills with prettier; add .prettierignore

One-time prettier --write so the new format:check CI gate starts green.
.prettierignore excludes generated (api-client.ts, documentation.json),
vendored (public/cibg-huisstijl), and backend (dotnet format owns it).

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

src/app/shared/infrastructure/api-error.spec.ts

@@ -3,7 +3,9 @@ import { problemDetail, problemFieldErrors } from './api-error';
 
 describe('problemDetail', () => {
   it('extracts the detail from an RFC-7807 ProblemDetails', () => {
-    expect(problemDetail({ detail: 'Afgewezen: 0 uren.', status: 422 }, 'fallback')).toBe('Afgewezen: 0 uren.');
+    expect(problemDetail({ detail: 'Afgewezen: 0 uren.', status: 422 }, 'fallback')).toBe(
+      'Afgewezen: 0 uren.',
+    );
   });
 
   it('falls back when there is no detail', () => {
@@ -15,8 +17,9 @@ describe('problemDetail', () => {
 
 describe('problemFieldErrors (G4 seam)', () => {
   it('maps a ValidationProblemDetails errors dict to first-message-per-field', () => {
-    expect(problemFieldErrors({ errors: { straat: ['Verplicht.'], postcode: ['Ongeldig.', 'x'] } }))
-      .toEqual({ straat: 'Verplicht.', postcode: 'Ongeldig.' });
+    expect(
+      problemFieldErrors({ errors: { straat: ['Verplicht.'], postcode: ['Ongeldig.', 'x'] } }),
+    ).toEqual({ straat: 'Verplicht.', postcode: 'Ongeldig.' });
   });
 
   it('returns {} when there is no errors envelope (the current backend shape)', () => {

src/app/shared/infrastructure/role.ts

@@ -9,5 +9,7 @@ import { Role } from '@shared/domain/role';
  * the FE derives `editable` from it.
  */
 export function currentRole(): Role {
-  return new URLSearchParams(window.location.search).get('role') === 'approver' ? 'approver' : 'drafter';
+  return new URLSearchParams(window.location.search).get('role') === 'approver'
+    ? 'approver'
+    : 'drafter';
 }

src/app/shared/infrastructure/scenario.interceptor.ts

@@ -21,8 +21,11 @@ export const scenarioInterceptor: HttpInterceptorFn = (req, next) => {
       return of(new HttpResponse({ status: 200, body: '[]' })).pipe(delay(400));
     case 'error':
       return timer(400).pipe(
-        switchMap(() => throwError(() =>
-          new HttpErrorResponse({ status: 500, statusText: 'Demo-fout', url: req.url }))),
+        switchMap(() =>
+          throwError(
+            () => new HttpErrorResponse({ status: 500, statusText: 'Demo-fout', url: req.url }),
+          ),
+        ),
       );
     default:
       return next(req);

src/app/shared/infrastructure/scenario.ts

@@ -9,7 +9,15 @@ export type Scenario =
   | 'upload-slow'
   | 'upload-fail';
 
-const VALID: Scenario[] = ['default', 'slow', 'loading', 'empty', 'error', 'upload-slow', 'upload-fail'];
+const VALID: Scenario[] = [
+  'default',
+  'slow',
+  'loading',
+  'empty',
+  'error',
+  'upload-slow',
+  'upload-fail',
+];
 
 /** Reads ?scenario= from the URL so a demo can force each async state. */
 export function currentScenario(): Scenario {