Validation queued. Not a terminal outcome — poll GET /strategy/{strategyId} until
validation leaves pending.
The body is a StrategyState carrying only what is known at this point: the id and
validation: pending. The status code, not the body, is what tells the two responses
apart — a 200 can also carry validation: pending, left by a check an earlier call
queued. So 202 means this call started a check, while pending means only a check
is outstanding.
Already validated; the recorded verdict, unchanged