Start async person search by company name, role, geography, and person name. Returns requestId for polling. Pagination billing: call the first page normally and save billing.requestId from the Orthogonal /v1/run response. For later offset or cursor pages of the same search, pass parentRequestId with unchanged search parameters. Valid continuation pages still get their own request IDs and quoted price, but are charged 0. Changing filters starts a new billable search.