feat(catalog): prevent and repair Arcturus emulator data errors

Block invalid catalog_items writes at the API level (points currency
allowlist, non-negative prices, positive amount, limited stack >= sold
count, unique sibling order numbers) and auto-assign unique order numbers
on bulk create. Add a catalog-maintenance scan + transactional repair that
fixes pre-existing rows: resets unsupported points_type, clamps negative
costs, sets amount to 1, raises limited_stack, renumbers duplicate orders
and deletes offers with missing page/item references. Surface the issue
count and a fix button in the admin maintenance panel.

Also: add enabled/retired flag to clone sources, classify poster and
currency furniture in item-kind, and remove the obsolete update-Nitrov3.sh.

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

@@ -49,3 +49,22 @@ it("rejects fractional set/add prices, accepts percentage discounts", () => {
 			.costPoints,
 	).toBe(5);
 });
+it("rejects unsupported pointsType values in bulk changes", () => {
+	expect(() =>
+		bulkOfferInputSchema.parse({
+			ids: [1],
+			changes: { pointsType: 101 },
+		}),
+	).toThrow(/not supported/i);
+});
+it("accepts supported pointsType values in bulk changes", () => {
+	expect(
+		bulkOfferInputSchema.parse({
+			ids: [1],
+			changes: { pointsType: 5 },
+		}),
+	).toEqual({
+		ids: [1],
+		changes: { pointsType: 5 },
+	});
+});