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

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

apps/user-app/src/views/NewestView.vue

@@ -62,12 +62,14 @@ onBeforeMount(async () => {
 
 const pull = async () => {
   // Reveal more of what is already loaded first; only go back to the server
-  // once the whole fetched list is on screen.
+  // once the whole fetched list is on screen. Reaching the end is how this
+  // page asks for new products: the cached catalogue is refreshed.
   if (visibleCount.value < productsData.productList.length) {
     visibleCount.value += PAGE_SIZE
     return
   }
-  await getProducts(loadingPull, true)
+  if (loadingPull.value) return
+  await getProducts(loadingPull, false, true)
 }
 </script>