feat: build and wire the Quick View modal

The Quick View button (search results page only) emitted
quickViewPlaceholder with zero listeners anywhere up the chain - the
button did nothing. Built a minimal QuickViewDialogComponent (image,
name, price incl. discount, short description, Add to Cart, link to
full product page) and wired the event through product-grid ->
search-results -> catalog-container, which fetches the product via
ProductFacade and opens the dialog.

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

src/app/i18n/translations.ts

@@ -271,6 +271,7 @@ export interface Translations {
     compare: string;
     share: string;
     quickView: string;
+    quickViewDetails: string;
     stockHigh: string;
     stockMedium: string;
     stockLow: string;