feat(catalog): add reviewed bulk edits and complete category duplication

src/features/catalog/domain/bulk-offers.test.ts

@@ -0,0 +1,51 @@
+import { expect, it } from "vitest";
+import { bulkOfferInputSchema, projectBulkOffer } from "./bulk-offers";
+
+const row = { pageId: 4, costCredits: 3, costPoints: 10, pointsType: 5 };
+it("combines selected changes, rounds percentages, preserves explicit zero", () => {
+	expect(
+		projectBulkOffer(row, {
+			costCredits: { mode: "set", value: 0 },
+			costPoints: { mode: "percent", value: 25 },
+			pageId: 9,
+		}),
+	).toEqual({ ...row, costCredits: 0, costPoints: 13, pageId: 9 });
+});
+it("rejects negative results and integer overflow instead of silently clamping", () => {
+	expect(() =>
+		projectBulkOffer(row, { costCredits: { mode: "add", value: -4 } }),
+	).toThrow();
+	expect(() =>
+		projectBulkOffer(row, { costCredits: { mode: "set", value: 2147483648 } }),
+	).toThrow();
+});
+it("leaves legacy signed fields untouched when changing a different field", () => {
+	expect(
+		projectBulkOffer({ ...row, costCredits: -1 }, { pageId: 5 }).costCredits,
+	).toBe(-1);
+});
+it("rejects empty, duplicate, oversized selections and unknown mutations", () => {
+	for (const input of [
+		{ ids: [], changes: { pageId: 1 } },
+		{ ids: [1, 1], changes: { pageId: 1 } },
+		{
+			ids: Array.from({ length: 501 }, (_, i) => i + 1),
+			changes: { pageId: 1 },
+		},
+		{ ids: [1], changes: {} },
+		{ ids: [1], changes: { itemIds: "2" } },
+	])
+		expect(() => bulkOfferInputSchema.parse(input)).toThrow();
+});
+it("rejects fractional set/add prices, accepts percentage discounts", () => {
+	expect(() =>
+		bulkOfferInputSchema.parse({
+			ids: [1],
+			changes: { costCredits: { mode: "set", value: 1.5 } },
+		}),
+	).toThrow();
+	expect(
+		projectBulkOffer(row, { costPoints: { mode: "percent", value: -50 } })
+			.costPoints,
+	).toBe(5);
+});