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/brief/ui/rejection-comments/rejection-comments.component.ts

@@ -8,18 +8,33 @@ import { ButtonComponent } from '@shared/ui/button/button.component';
 @Component({
   selector: 'app-rejection-comments',
   imports: [FormsModule, AlertComponent, ButtonComponent],
-  styles: [`
-    :host{display:block}
-    textarea{inline-size:100%;box-sizing:border-box;min-block-size:4rem;margin-block:var(--rhc-space-max-sm)}
-    label{font-weight:600}
-  `],
+  styles: [
+    `
+      :host {
+        display: block;
+      }
+      textarea {
+        inline-size: 100%;
+        box-sizing: border-box;
+        min-block-size: 4rem;
+        margin-block: var(--rhc-space-max-sm);
+      }
+      label {
+        font-weight: 600;
+      }
+    `,
+  ],
   template: `
     @if (mode() === 'show') {
-      <app-alert type="warning"><strong>{{ rejectedTitle() }}</strong> {{ comments() }}</app-alert>
+      <app-alert type="warning"
+        ><strong>{{ rejectedTitle() }}</strong> {{ comments() }}</app-alert
+      >
     } @else {
       <label for="reject-comments">{{ entryLabel() }}</label>
       <textarea id="reject-comments" [(ngModel)]="draft"></textarea>
-      <app-button variant="danger" [disabled]="!draft().trim() || busy()" (click)="submit()">{{ rejectLabel() }}</app-button>
+      <app-button variant="danger" [disabled]="!draft().trim() || busy()" (click)="submit()">{{
+        rejectLabel()
+      }}</app-button>
     }
   `,
 })