refactor(content-management): remove duplicated bootstrap serialization

StaticPagesEditorComponent.persist() hand-rolled the same title/html/route
mapping already implemented in ContentPageService.toBootstrapRecord(), with
subtly different behavior (always wrote empty-string html entries per locale
instead of omitting them, no title fallback). Added ContentManagementFacade.serializePages()
as a thin passthrough and switched the component to use the single canonical
implementation.

src/app/features/content-management/components/static-pages-editor.component.ts

@@ -82,29 +82,7 @@ export class StaticPagesEditorComponent {
   private persist(pages: ContentPage[]): void {
     this.projectEditor.updateBootstrap(current => ({
       ...current,
-      staticPages: pages.reduce<Record<string, any>>((acc, page) => {
+      staticPages: this.contentFacade.serializePages(pages)
-        const record = {
-          id: page.id,
-          slug: page.slug,
-          title: Object.fromEntries(Object.entries(page.translations).map(([locale, translation]) => [locale, translation.title || page.title]).filter(([, value]) => !!value)),
-          html: Object.fromEntries(Object.entries(page.translations).map(([locale, translation]) => [locale, translation.html || ''])),
-          showInFooter: page.showInFooter,
-          showInHeader: page.showInHeader,
-          showInSitemap: page.showInSitemap,
-          icon: page.icon,
-          order: page.order,
-          visibility: page.visibility,
-          requiresAuthentication: page.requiresAuthentication,
-          footerGroup: page.footerGroup,
-          translations: page.translations,
-          seo: page.seo,
-          visible: true,
-          route: `/${page.slug}`,
-          content: Object.fromEntries(Object.entries(page.translations).map(([locale, translation]) => [locale, translation.html || ''])),
-        };
-        acc[page.id] = record;
-        return acc;
-      }, {})
     }));
   }
 }

src/app/features/content-management/facade/content-management.facade.ts

@@ -1,6 +1,7 @@
 import { Injectable, computed, inject } from '@angular/core';
 import { BootstrapConfig } from '../../../shared/models/config';
 import { ContentPageService } from '../services/content-page.service';
+import { ContentPage } from '../models/content-page.model';
 
 @Injectable({ providedIn: 'root' })
 export class ContentManagementFacade {
@@ -21,4 +22,8 @@ export class ContentManagementFacade {
   toBootstrapRecord(bootstrap: BootstrapConfig | null) {
     return bootstrap ? this.service.toBootstrapRecord(this.pages(bootstrap)) : {};
   }
+
+  serializePages(pages: ContentPage[]) {
+    return this.service.toBootstrapRecord(pages);
+  }
 }