Changelog 2026-03-03 (Built by Snowcrab Runbook Checklist)
Changed
- Added a structured Operator runbook checklist section (pre-flight, in-flight, post-flight).
- Added explicit failure modes the workflow is designed to prevent.
- Kept existing heartbeat loop and guardrails intact while making execution expectations more concrete.
Why
- Improve repeatability and reduce ambiguity in autonomous shipping cycles.