- Reject failure-condition edges inside optional-group templates (the single-pass
walk surfaces template failures as the group's outcome, so an internal failure
edge was silently dead) — Greptile P2.
- flowToIr: a container/group node (foreach/loop/optional-group) is v2-only — its
presence now forces v2 serialization (an inserted optional-group on a plain
workflow no longer serializes as invalid v1) — CodeRabbit.
- Disabled optional-group bypass routes a plain success with no distinguishing
value, so an outcome:* edge can't preempt success routing (inertness) — CodeRabbit.
- Downgrade heuristic: presence of a legacy optionalSteps key (incl. []) keeps v2.
- Resolver docblock corrected (config-less groups resolve to a fallback entry).
- Strengthen tests: assert both inserted groups + v2 round-trip; failure-edge
rejection case.
- Changeset: bump to major (removed exported WorkflowOptionalStep type).
- Plan: record U7a as delivered in this cohort; only the workflow-step seam
infra removal remains deferred.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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