fix: i18n gaps in popular searches and compare table

- SearchFacade.popularSearches hardcoded English titles regardless of
  active locale. Converted to a getter using translate.t() for the
  displayed title/text; the underlying search query stays the stable
  English canonical term the backend index matches against.
- Compare table and compare page rendered product.name raw instead of
  through getTranslatedField(), same pattern used everywhere else
  product titles are shown (catalog, product detail).
- SearchTrendingService.loadTrending() is a genuine backend gap (no
  trending-search endpoint exists) - already degrades gracefully,
  documented as a gap in BACKEND-API-REFERENCE.md \u00a712.6 rather than
  faked client-side.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

BACKEND-API-REFERENCE.md

@@ -522,3 +522,13 @@ Separately, `createCartPayment()` (payment-gateway charge creation) still sends
 { "telegramUserId": "8823771" }
 ```
 `telegramUserId` may be `null` for a non-Telegram web session - decide whether to also accept an email address as an alternative identifier (the frontend has no email capture on this flow today, so that would need a small frontend addition too). Once this ships, the frontend's localStorage fallback becomes purely a resilience path rather than the common case, and could optionally sync any locally-queued subscriptions on next successful call.
+
+### 12.6 Trending search terms
+
+**Gap:** `SearchTrendingService.loadTrending()` is a stub returning `of(null)` - no trending-searches endpoint exists. It already degrades gracefully (UI hides the trending section rather than showing an error), so this is purely a missing-feature gap, not a bug.
+
+**Ask:** an endpoint returning the top N search queries over some recent window, e.g.:
+```json
+{ "trending": [{ "query": "wireless earbuds", "count": 214 }, { "query": "winter jacket", "count": 187 }] }
+```
+Once it exists, wire `loadTrending()` to it and map `query` -> `SearchSuggestion.title/text`.

src/app/features/search/facade/search.facade.ts

@@ -55,40 +55,47 @@ export class SearchFacade {
 
   readonly state = this.store.state;
 
-  readonly popularSearches: SearchSuggestion[] = [
-    {
-      id: 'popular-smartphones',
-      type: 'collection',
-      title: 'Smartphones',
-      text: 'Smartphones',
-      icon: 'trendingUp',
-      target: { route: '/search', query: { q: 'Smartphones' } }
-    },
-    {
-      id: 'popular-sneakers',
-      type: 'collection',
-      title: 'Sneakers',
-      text: 'Sneakers',
-      icon: 'trendingUp',
-      target: { route: '/search', query: { q: 'Sneakers' } }
-    },
-    {
-      id: 'popular-headphones',
-      type: 'collection',
-      title: 'Headphones',
-      text: 'Headphones',
-      icon: 'trendingUp',
-      target: { route: '/search', query: { q: 'Headphones' } }
-    },
-    {
-      id: 'popular-laptops',
-      type: 'collection',
-      title: 'Laptops',
-      text: 'Laptops',
-      icon: 'trendingUp',
-      target: { route: '/search', query: { q: 'Laptops' } }
-    },
-  ];
+  /**
+   * Search query text stays the stable English canonical term (what the
+   * backend search index matches against); only the displayed title/text
+   * are translated.
+   */
+  get popularSearches(): SearchSuggestion[] {
+    return [
+      {
+        id: 'popular-smartphones',
+        type: 'collection',
+        title: this.translate.t('search.popularSmartphones'),
+        text: this.translate.t('search.popularSmartphones'),
+        icon: 'trendingUp',
+        target: { route: '/search', query: { q: 'Smartphones' } }
+      },
+      {
+        id: 'popular-sneakers',
+        type: 'collection',
+        title: this.translate.t('search.popularSneakers'),
+        text: this.translate.t('search.popularSneakers'),
+        icon: 'trendingUp',
+        target: { route: '/search', query: { q: 'Sneakers' } }
+      },
+      {
+        id: 'popular-headphones',
+        type: 'collection',
+        title: this.translate.t('search.popularHeadphones'),
+        text: this.translate.t('search.popularHeadphones'),
+        icon: 'trendingUp',
+        target: { route: '/search', query: { q: 'Headphones' } }
+      },
+      {
+        id: 'popular-laptops',
+        type: 'collection',
+        title: this.translate.t('search.popularLaptops'),
+        text: this.translate.t('search.popularLaptops'),
+        icon: 'trendingUp',
+        target: { route: '/search', query: { q: 'Laptops' } }
+      },
+    ];
+  }
 
   constructor() {
     const history = this.historyService.getSnapshot();

src/app/features/website/user-experience/compare/components/compare-table.component.html

@@ -6,7 +6,7 @@
           <th scope="col">{{ 'ux.compareAttribute' | translate }}</th>
           @for (product of products; track product.itemID) {
             <th scope="col">
-              <div class="compare-product-title">{{ product.name }}</div>
+              <div class="compare-product-title">{{ productTitle(product) }}</div>
             </th>
           }
         </tr>

src/app/features/website/user-experience/compare/components/compare-table.component.ts

@@ -2,6 +2,8 @@ import { ChangeDetectionStrategy, Component, Input, computed, inject } from '@an
 import { Product } from '../../../../../core/products/models/product-domain.model';
 import { TranslateService } from '../../../../../i18n/translate.service';
 import { TranslatePipe } from '../../../../../i18n/translate.pipe';
+import { LanguageService } from '../../../../../services/language.service';
+import { getTranslatedField } from '../../../../../utils/item.utils';
 
 interface CompareRow {
   key: string;
@@ -27,6 +29,7 @@ const STOCK_LABEL_KEYS: Record<string, string> = {
 })
 export class CompareTableComponent {
   private readonly i18n = inject(TranslateService);
+  private readonly languageService = inject(LanguageService);
 
   @Input() products: Product[] = [];
   @Input() hideIdentical = false;
@@ -61,6 +64,10 @@ export class CompareTableComponent {
     return this.hideIdentical ? baseRows.filter(row => !row.identical) : baseRows;
   });
 
+  productTitle(product: Product): string {
+    return getTranslatedField(product, 'name', this.languageService.currentLanguage());
+  }
+
   isDifferentRow(row: CompareRow): boolean {
     return this.highlightDifferences && !row.identical;
   }

src/app/features/website/user-experience/compare/containers/compare-page.component.html

@@ -26,7 +26,7 @@
     <section class="compare-products-list">
       @for (product of products(); track product.itemID) {
         <article class="compare-product-chip">
-          <a [routerLink]="['/product', product.itemID] | langRoute">{{ product.name }}</a>
+          <a [routerLink]="['/product', product.itemID] | langRoute">{{ productTitle(product) }}</a>
           <button type="button" [attr.aria-label]="'ux.removeFromCompare' | translate" (click)="remove(product.itemID)">×</button>
         </article>
       }

src/app/features/website/user-experience/compare/containers/compare-page.component.ts

@@ -5,6 +5,8 @@ import { Product } from '../../../../../core/products/models/product-domain.mode
 import { UserExperienceFacade } from '../../../../../facades/platform/user-experience.facade';
 import { TranslatePipe } from '../../../../../i18n/translate.pipe';
 import { LangRoutePipe } from '../../../../../pipes/lang-route.pipe';
+import { LanguageService } from '../../../../../services/language.service';
+import { getTranslatedField } from '../../../../../utils/item.utils';
 import { DEFAULT_USER_EXPERIENCE_CONFIG } from '../../../../../shared/models/config';
 import { CompareTableComponent } from '../components/compare-table.component';
 import { EmptyStateComponent } from '../../../../../shared/ui/empty-state/empty-state.component';
@@ -21,6 +23,7 @@ import { ButtonComponent } from '../../../../../shared/ui/button/button.componen
 export class ComparePageComponent {
   private readonly uxFacade = inject(UserExperienceFacade);
   private readonly configService = inject(ConfigService);
+  private readonly languageService = inject(LanguageService);
 
   private readonly compareConfig = this.resolveCompareConfig();
 
@@ -39,6 +42,10 @@ export class ComparePageComponent {
     this.uxFacade.clearCompare();
   }
 
+  productTitle(product: Product): string {
+    return getTranslatedField(product, 'name', this.languageService.currentLanguage());
+  }
+
   private resolveCompareConfig() {
     const raw = (this.configService.getBootstrapSnapshot() as any)?.userExperience?.compare ?? {};
     return {

src/app/i18n/en.ts

@@ -144,6 +144,10 @@ export const en: Translations = {
     noResultsHint: 'Try changing your query or using different keywords',
     emptyResultsAria: 'Empty search results',
     popularCategories: 'Popular categories',
+    popularSmartphones: 'Smartphones',
+    popularSneakers: 'Sneakers',
+    popularHeadphones: 'Headphones',
+    popularLaptops: 'Laptops',
     recommendedProducts: 'Recommended products',
     aiSuggestionHint: 'AI suggestion (future)',
     suggestionType: {

src/app/i18n/hy.ts

@@ -144,6 +144,10 @@ export const hy: Translations = {
     noResultsHint: 'Փորձեք փոխել հարցումը կամ օգտագործել այլ բանալի բառեր',
     emptyResultsAria: 'Դատարկ որոնման արդյունքներ',
     popularCategories: 'Հանրաճանաչ կատեգորիաներ',
+    popularSmartphones: 'Սմարթֆոններ',
+    popularSneakers: 'Կեդեր',
+    popularHeadphones: 'Ականջակալներ',
+    popularLaptops: 'Նոութբուքեր',
     recommendedProducts: 'Առաջարկվող ապրանքներ',
     aiSuggestionHint: 'AI առաջարկ (ապագայում)',
     suggestionType: {

src/app/i18n/ru.ts

@@ -144,6 +144,10 @@ export const ru: Translations = {
     noResultsHint: 'Попробуйте изменить запрос или используйте другие ключевые слова',
     emptyResultsAria: 'Пустые результаты поиска',
     popularCategories: 'Популярные категории',
+    popularSmartphones: 'Смартфоны',
+    popularSneakers: 'Кроссовки',
+    popularHeadphones: 'Наушники',
+    popularLaptops: 'Ноутбуки',
     recommendedProducts: 'Рекомендуемые товары',
     aiSuggestionHint: 'AI-подсказка (в будущем)',
     suggestionType: {

src/app/i18n/translations.ts

@@ -142,6 +142,10 @@ export interface Translations {
     noResultsHint: string;
     emptyResultsAria: string;
     popularCategories: string;
+    popularSmartphones: string;
+    popularSneakers: string;
+    popularHeadphones: string;
+    popularLaptops: string;
     recommendedProducts: string;
     aiSuggestionHint: string;
     suggestionType: {