feat: add CSV/JSON export, advanced bulk filters & selection to Catalog Manager

- Admin Audit Log: CSV/JSON export via ?format=query param
- Catalog Manager: club_only / have_offer filters (multi-filter support)
- Offer discovery: refactored discoverOffers() to accept filters object
- Translations added for new filter labels
- Test updates for all modified paths

src/i18n/commandocentrum-messages.test.ts

@@ -48,6 +48,5 @@ describe("command center translations", () => {
 		expect(t("totalAccounts", { count: 42 })).toBe("42 total accounts");
 		expect(t("groups.players")).toBe("Players");
 		expect(t("checkedAt", { time: "12:34" })).toBe("Checked at 12:34");
-
 	});
 });