Add Catalog Studio inspection and guided import review

src/lib/furni/studio-inspection.test.ts

@@ -0,0 +1,67 @@
+import { describe, expect, it } from "vitest";
+import {
+	compareFurniture,
+	type FurnitureInspection,
+	validateClassnames,
+} from "./studio-inspection";
+
+const source = {
+	name: "Chair",
+	description: "A chair",
+	revision: 2,
+	type: "flooritem",
+};
+const empty: FurnitureInspection = {
+	classname: "chair",
+	sql: [],
+	catalog: [],
+	furnidata: [],
+	furnidataReadable: true,
+	nitro: { exists: false, bytes: 0 },
+	icon: { exists: false, bytes: 0 },
+};
+describe("studio inspection", () => {
+	it("rejects paths and oversized batches", () => {
+		expect(validateClassnames(["../file"])).toBeNull();
+		expect(validateClassnames(["a\\b"])).toBeNull();
+		expect(validateClassnames(Array(501).fill("chair"))).toBeNull();
+		expect(validateClassnames(["chair*0", "chair*0"])).toEqual(["chair*0"]);
+	});
+	it("identifies new furniture only after a successful lookup", () => {
+		expect(compareFurniture(source, empty).state).toBe("new");
+		expect(
+			compareFurniture(source, { ...empty, furnidataReadable: false }).state,
+		).toBe("unknown");
+	});
+	it("compares values without treating allocated IDs as conflicts", () => {
+		const local = {
+			...empty,
+			sql: [{ id: 901, spriteId: 902, name: "Old chair", type: "s" }],
+			furnidata: [
+				{
+					id: 902,
+					name: "Old chair",
+					description: "Old",
+					revision: 1,
+					type: "flooritem",
+				},
+			],
+		};
+		expect(compareFurniture(source, local).state).toBe("changed");
+		expect(
+			compareFurniture(source, local).fields.find((f) => f.label === "Name")
+				?.changed,
+		).toBe(true);
+	});
+	it("flags duplicate SQL classnames as conflicts", () => {
+		expect(
+			compareFurniture(source, {
+				...empty,
+				sql: [
+					{ id: 1, spriteId: 1, name: "Chair", type: "s" },
+					{ id: 2, spriteId: 2, name: "Chair", type: "s" },
+				],
+			}).state,
+		).toBe("conflict");
+	});
+});