cleanup: remove tenant variant logic and enforce config-driven UI

src/app/services/seo.service.ts

@@ -1,8 +1,8 @@
 import { Injectable, inject, DOCUMENT } from '@angular/core';
 import { Meta, Title } from '@angular/platform-browser';
-import { environment } from '../../environments/environment';
 import { Item } from '../models';
 import { getDiscountedPrice, getMainImage } from '../utils/item.utils';
+import { UiRuntimeFacade } from '../facades/runtime/ui-runtime.facade';
 
 @Injectable({
   providedIn: 'root'
@@ -11,9 +11,15 @@ export class SeoService {
   private meta = inject(Meta);
   private title = inject(Title);
   private doc = inject(DOCUMENT);
+  private readonly uiRuntime = inject(UiRuntimeFacade);
 
-  private readonly siteUrl = `https://${environment.domain}`;
-  private readonly siteName = environment.brandFullName;
+  private get siteUrl(): string {
+    return this.doc?.location?.origin ?? '';
+  }
+
+  private get siteName(): string {
+    return this.uiRuntime.marketplaceDisplayName() || 'Marketplace';
+  }
 
   /**
    * Set Open Graph & Twitter Card meta tags for a product/item page.