fix: use configured furni source and catalog assets

src/lib/services/catalog-assets.ts

@@ -0,0 +1,26 @@
+import { promises as fs } from "node:fs";
+import path from "node:path";
+
+export function catalogueAssetDirectories(
+	gamedataRoot: string,
+	cwd = process.cwd(),
+): string[] {
+	const bundled = path.join(cwd, "public", "swf", "c_images", "catalogue");
+	if (!gamedataRoot.trim()) return [bundled];
+
+	return [path.join(gamedataRoot, "c_images", "catalogue"), bundled];
+}
+
+export async function readCatalogueAssetFiles(
+	directories: string[],
+): Promise<string[]> {
+	const files = new Set<string>();
+	for (const directory of directories) {
+		try {
+			for (const file of await fs.readdir(directory)) files.add(file);
+		} catch {
+			// A missing optional source must not hide assets from the other source.
+		}
+	}
+	return [...files];
+}