refactor: add and use isValidCatalogLayout type guard for robust layout assignment

src/components/admin/studio/organize-imports-dialog.tsx

@@ -34,7 +34,11 @@ import {
 	SelectTrigger,
 	SelectValue,
 } from "@/components/ui/select";
-import { CATALOG_LAYOUTS, type CatalogLayout } from "@/lib/catalog-layouts";
+import {
+	CATALOG_LAYOUTS,
+	type CatalogLayout,
+	isValidCatalogLayout,
+} from "@/lib/catalog-layouts";
 // import { CATALOG_LAYOUTS } from "@/lib/catalog-layouts";
 import { getLocalIconUrl } from "@/lib/furni/classname";
 import { cn } from "@/lib/utils";
@@ -745,7 +749,9 @@ export function OrganizeImportsDialog({
 																		layout:
 																			group.layout === null
 																				? undefined
-																				: (group.layout as CatalogLayout),
+																				: isValidCatalogLayout(group.layout)
+																					? group.layout
+																					: undefined,
 																	});
 																}}
 															>

src/lib/catalog-layouts.ts

@@ -23,6 +23,11 @@ export const CATALOG_LAYOUTS = [
 
 export type CatalogLayout = (typeof CATALOG_LAYOUTS)[number];
 
+/** Type guard to check if a string is a valid CatalogLayout. */
+export function isValidCatalogLayout(layout: string): layout is CatalogLayout {
+	return (CATALOG_LAYOUTS as readonly string[]).includes(layout);
+}
+
 /** Short human-readable description for each layout. Shown in the layout selector. */
 export const LAYOUT_DESCRIPTIONS: Record<CatalogLayout, string> = {
 	default_3x3: "Standard 3-column grid of items",