fix(ui): Enter in CIDR field runs create scan and wait

Made-with: Cursor

internal/webui/index.html

@@ -1335,6 +1335,11 @@
         if (ev.key === "Enter") runMacSearch();
       });
       createScanBtn.addEventListener("click", createScan);
+      cidrInput?.addEventListener("keydown", (ev) => {
+        if (ev.key !== "Enter") return;
+        ev.preventDefault();
+        createScan();
+      });
       document.getElementById("purgeDbBtn")?.addEventListener("click", async () => {
         const inp = document.getElementById("purgeSecretInput");
         const secret = (inp && inp.value.trim()) || "";