Cooperative cleanup deadlines now close runs on the runtime's next repair pass even when no compatible workflow worker is available.
- Revoke outstanding workflow, activity and timer authority without executing the workflow definition.
- Preserve the original cancellation request in terminal history.
- Retain fractional seconds when scanning deadlines.
- Report
cancellation_deadlines_enforcedin repair-pass JSON.
Ordinary Worker protocol remains 1.19. Service-mode cooperative cancellation is still undergoing separate model and SDK qualification.
Details: Workflow #604.