Se agrego los efectos para caluclar la clave

frontend/src/lib/components/dashboard/goods/fractions/TariffFractionFormDialog.svelte

@@ -66,6 +66,13 @@
 		}
 	});
 
+	// Sync code with fractionFormatted for US catalog
+	$effect(() => {
+		if (catalog === 'usa' || catalog === 'american') {
+			code = fractionFormatted.replace(/\./g, '').replace(/-/g, '');
+		}
+	});
+
 	async function handleSubmit() {
 		const companyId = companyStore.activeCompany?.id;
 		if (!companyId) return;
@@ -126,9 +133,7 @@
 		<div class="grid gap-4 py-4">
 			<div class="grid grid-cols-2 gap-4">
 				<div class="space-y-2">
-					<Label for="code"
-						>{catalog === 'mex' ? 'Clave / Código (Sin puntos)' : 'Clave (Calculada)'}</Label
-					>
+					<Label for="code">{catalog === 'mex' ? 'Clave / Código (Sin puntos)' : 'Clave'}</Label>
 					<Input id="code" bind:value={code} disabled={true} placeholder="Ej. 01012101" />
 					<p class="text-[10px] text-muted-foreground">
 						{catalog === 'mex'