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/application/brief.store.ts

@@ -3,7 +3,13 @@ import { Result } from '@shared/kernel/fp';
 import { createStore } from '@shared/application/store';
 import { Role } from '@shared/domain/role';
 import { currentRole } from '@shared/infrastructure/role';
-import { Brief, allDiagnostics, canSubmit, hasBlockingErrors, unresolvedPlaceholders } from '@brief/domain/brief';
+import {
+  Brief,
+  allDiagnostics,
+  canSubmit,
+  hasBlockingErrors,
+  unresolvedPlaceholders,
+} from '@brief/domain/brief';
 import { BriefMsg, BriefState, initial, reduce } from '@brief/domain/brief.machine';
 import { BriefAdapter } from '@brief/infrastructure/brief.adapter';
 
@@ -34,7 +40,9 @@ export class BriefStore {
       treats as editable (draft, or rejected — which reopens to draft on the first edit). */
   readonly editable = computed(() => {
     const b = this.brief();
-    return !!b && (b.status.tag === 'draft' || b.status.tag === 'rejected') && this.role === 'drafter';
+    return (
+      !!b && (b.status.tag === 'draft' || b.status.tag === 'rejected') && this.role === 'drafter'
+    );
   });
   readonly diagnostics = computed(() => (this.brief() ? allDiagnostics(this.brief()!) : []));
   readonly unresolved = computed(() => (this.brief() ? unresolvedPlaceholders(this.brief()!) : []));
@@ -46,7 +54,12 @@ export class BriefStore {
 
   async load() {
     const r = await this.adapter.load();
-    if (r.ok) this.store.dispatch({ tag: 'BriefLoaded', brief: r.value.brief, availablePassages: r.value.availablePassages });
+    if (r.ok)
+      this.store.dispatch({
+        tag: 'BriefLoaded',
+        brief: r.value.brief,
+        availablePassages: r.value.availablePassages,
+      });
     else this.store.dispatch({ tag: 'BriefLoadFailed', reason: r.error });
   }
 
@@ -84,7 +97,12 @@ export class BriefStore {
     const r = await this.adapter.reset();
     this.busy.set(false);
     this.saveState.set('idle');
-    if (r.ok) this.store.dispatch({ tag: 'BriefLoaded', brief: r.value.brief, availablePassages: r.value.availablePassages });
+    if (r.ok)
+      this.store.dispatch({
+        tag: 'BriefLoaded',
+        brief: r.value.brief,
+        availablePassages: r.value.availablePassages,
+      });
     else this.lastError.set(r.error);
   }
 
@@ -119,7 +137,12 @@ export class BriefStore {
         this.store.dispatch({ tag: 'Approved', by: s.approvedBy, at: s.approvedAt });
         break;
       case 'rejected':
-        this.store.dispatch({ tag: 'Rejected', by: s.rejectedBy, at: s.rejectedAt, comments: s.comments });
+        this.store.dispatch({
+          tag: 'Rejected',
+          by: s.rejectedBy,
+          at: s.rejectedAt,
+          comments: s.comments,
+        });
         break;
       case 'sent':
         this.store.dispatch({ tag: 'Sent', at: s.sentAt });