fix: use configured furni source and catalog assets

src/lib/catalog-assets.test.ts

@@ -0,0 +1,17 @@
+import { describe, expect, it } from "vitest";
+import { catalogueAssetUrl, catalogueIconUrl } from "@/lib/catalog-assets";
+
+describe("catalogue asset URLs", () => {
+	it("uses the production gamedata mount for category icons", () => {
+		expect(catalogueIconUrl(7)).toBe("/gamedata/c_images/catalogue/icon_7.png");
+	});
+
+	it("encodes catalogue image names and supports both image formats", () => {
+		expect(catalogueAssetUrl("front page", "png")).toBe(
+			"/gamedata/c_images/catalogue/front%20page.png",
+		);
+		expect(catalogueAssetUrl("front page", "gif")).toBe(
+			"/gamedata/c_images/catalogue/front%20page.gif",
+		);
+	});
+});