Run a GEO prompt sequence now

Runs the sequence synchronously and answers with its result. The call is not queued: the request stays open for the whole run, which plays every turn against every available answer engine and can take several minutes. Use a client timeout of at least five minutes; after four minutes the API stops waiting and answers 409 while the run finishes on its own. Do not retry; read the result from the project's GEO checks. The work happens inside the Notra dashboard, which owns the model credentials and billing gates; the public API never calls an answer engine itself. Results also land in the project's GEO checks.