Dataforseo Ranked Probe

Can we get rank from ONE Labs call instead of N live SERP calls?

check_rankings currently issues one live SERP request per tracked keyword — 53 requests, ~$0.82, 7.5 minutes, and a rate rejection if paced too fast. fetch_domain_ranked_keywords asks the Labs endpoint for everything a domain ranks for in a single request at ~$0.05. It has existed in the codebase with ZERO callers.

This checks whether that path actually returns positions for this account. If it does, it replaces the fan-out entirely and takes the DB-session problem with it, since the call finishes in seconds.