Sentinel monitors gain model-call visibility, unhandled escalations now halt samples
- fix(sentinel): terminate the sample when an escalation reaches the top with nothing to handle it UKGovernmentBEIS/inspect_ai
- feat: sentinel monitors can watch every agent's model calls UKGovernmentBEIS/inspect_ai
- feat: sentinel step.input is the exact model input even after events are evicted, or None when unavailable UKGovernmentBEIS/inspect_ai