phase-8: add config-driven public website runtime route and dynamic layout

src/app/facades/website/website-runtime.facade.ts

@@ -0,0 +1,34 @@
+import { Injectable } from '@angular/core';
+import { Observable, map } from 'rxjs';
+import { ConfigService } from '../../core/config/config.service';
+import { BrandingEngineService } from '../../theme/runtime/branding-engine.service';
+import { ThemeEngineService } from '../../theme/runtime/theme-engine.service';
+import { PageRendererService } from '../../dynamic-renderer/page-renderer/page-renderer.service';
+import { PageRenderModel } from '../../dynamic-renderer/page-renderer/page-renderer.model';
+import { WidgetRegistryBootstrapService } from '../../widgets/registry/widget-registry.bootstrap.service';
+
+@Injectable({ providedIn: 'root' })
+export class WebsiteRuntimeFacade {
+  constructor(
+    private readonly configService: ConfigService,
+    private readonly pageRenderer: PageRendererService,
+    private readonly registryBootstrap: WidgetRegistryBootstrapService,
+    private readonly themeEngine: ThemeEngineService,
+    private readonly brandingEngine: BrandingEngineService
+  ) {}
+
+  initializeRuntime(): void {
+    this.registryBootstrap.registerDefaults();
+    this.themeEngine.initialize();
+    this.brandingEngine.initialize();
+  }
+
+  getPageRenderModel(pageKey: string): Observable<PageRenderModel | null> {
+    return this.configService.loadBootstrap().pipe(
+      map(bootstrap => {
+        const page = bootstrap.pages.find(p => p.key === pageKey && p.visible !== false);
+        return page ? this.pageRenderer.toRenderModel(page) : null;
+      })
+    );
+  }
+}