Improve catalog UX: remove category, add offers count, dynamic layout

- ProductCard: remove category field, add offersCount display
- CatalogPage: add fullWidthMap prop for map-only view
- catalog/index: pass fullWidthMap based on selectMode
- i18n: add offers pluralization

app/pages/catalog/index.vue

@@ -5,6 +5,7 @@
     :total-count="currentItems.length"
     :grid-columns="3"
     :with-map="showMap"
+    :full-width-map="fullWidthMap"
     :use-server-clustering="useServerClustering"
     :cluster-node-type="clusterNodeType"
     map-id="unified-catalog-map"
@@ -126,6 +127,10 @@ const cardType = computed(() => {
 
 const showMap = computed(() => displayMode.value !== 'hero')
 
+// Full width map when not in select mode (after filter is selected)
+// selectMode is active = grid + map, after selection = only map
+const fullWidthMap = computed(() => !selectMode.value && displayMode.value !== 'hero')
+
 // Use server clustering for grids that need it
 const useServerClustering = computed(() => {
   // Products grid - show offers clusters