feat: catalog read cache (api + user apps) and clearer Zarrin accounting errors

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/user-app/src/views/search/CollectionView.vue

@@ -40,12 +40,13 @@ import PageBar from '../../components/ui/PageBar.vue'
 import Spinner from '../../components/Spinner.vue'
 import SectionHead from '../../components/home/SectionHead.vue'
 import ProductCard from '../../components/product/ProductCard.vue'
-import { api, type ProductSummary } from '../../api/client'
+import { useCatalogStore } from '../../stores/catalogStore'
 
 const route = useRoute()
+const catalog = useCatalogStore()
 
 const loadingPage = ref(false)
-const allProducts = ref<ProductSummary[]>([])
+const allProducts = computed(() => catalog.products)
 
 // legacy passed the collection's title through as ?page=<title>; kept, with a
 // neutral fallback so the bar is never blank on a direct link.
@@ -56,9 +57,11 @@ const collectionProducts = computed(() =>
 )
 
 onMounted(async () => {
-  loadingPage.value = true
+  loadingPage.value = !catalog.loaded
   try {
-    allProducts.value = await api.listProducts()
+    await catalog.load()
+  } catch (e) {
+    console.log(e)
   } finally {
     loadingPage.value = false
   }