/zalando/categoriesapiKey4 credits/requestList a Zalando market's top-level category navigation
Returns a Zalando country storefront's live top-level category navigation, department by department, scraped directly from that department's own storefront nav tab bar. This is the discovery source for zalando-category's category parameter — category slugs are market-specific (each storefront uses its own local-language slug), so there is no fixed value space to hardcode; this endpoint asks the upstream live instead. market is required (there is no default storefront) and accepts 25 country storefronts — see zalando-markets for the full current list with domains. department optionally restricts the response to one of women, men, or kids; omitting it returns all three. Scope note: only the top-level nav tabs (e.g. Clothing, Shoes, Sports) are returned, not each tab's own hover-revealed mega-menu of sub-categories — that panel is not present in the page's initial HTML and cannot be reached without executing JavaScript, which this endpoint's transport does not do.
Required params: market:query