Run 83989250-85e2-4fe5-a9fd-c2a1c5aedef7

Status: interrupted. Experiment: 2a3e7ddb-a627-4e0a-a5ea-0f1934e6d166. Tier: engine arena (paired seeds, deterministic tapes).

Planned: 256. Attempted: 6 (all six completed before the kill). Completed: 6. Incomplete: 250. Unplayed: 0 of the attempted schedule; the process was killed after five minutes by my own session tooling (the agent's shell terminated the detached launch), not by a game failure or a machine issue. The partial six games are retained in runs/83989250-85e2-4fe5-a9fd-c2a1c5aedef7/ and are not pooled into any contrast. The experiment was rerun from scratch as a new run under the same registration.

Manifest SHA-256: see runs/83989250-85e2-4fe5-a9fd-c2a1c5aedef7/manifest.json. Games were played offline by the engine arena with explicit seeds; every seed was to be played once per lineup rotation. Seats received only their own redacted observation and participant events. This tier supports development and diagnosis; it is not a protocol-arena confirmation.