Google Search results (SERP) for a query, as JSON. Each record is one results page with organicResults (position, title, url, displayedUrl, description), paidResults, relatedQueries, peopleAlsoAsk and searchQuery metadata. Body: {query, limit}. limit (1-20) is rounded up to whole pages of about 10 results, so 1-10 returns one page and 11-20 returns two. Useful for rank checks, source discovery and grounding answers in search results.