Refine marketplace prompt listing

OnlyPrompt.Frontend/marketplace.html

@@ -559,6 +559,12 @@
           clearTimeout(searchTimeout);
           searchTimeout = setTimeout(loadPrompts, 400);
         });
+
+        input.addEventListener("keydown", (event) => {
+          if (event.key !== "Enter") return;
+          event.preventDefault();
+          loadPrompts();
+        });
       }
 
       const topbarObserver = new MutationObserver(wireMarketplaceTopbarSearch);