Calculate and save one report in the owner-authorized project

Compute and save an aggregate performance report in the fixed Projects destination authorized by the account owner. Uses the existing free or paid report allowance. Requires an active agent key and explicit owner write permission. Reuse request_id with identical content to retry within the same permission grant. No report reading, deletion, subscription or payment authorization. Send measurements without secrets. A repeated identical request consumes no additional report quota. Changing or re-enabling the grant creates a new request namespace. No automatic paid upgrade or overage. The successful response contains no private report history.