A pre-merge-remediation/plan-replan node (e.g. code-review-remediation) is a
fire-and-forget async scheduler with no failure out-edge. When its schedule call
can't re-arm (missing rehydrated failureContext after restart,
remediation-not-scheduled, or an exhausted rework budget), the failure bubbled
out as the terminal graph outcome and handleGraphFailure stamped status:"failed"
— surfacing a spurious "Task Failed" even while the previously-scheduled
fix/reviewer session was still live.
Guard the terminal sink: skip the failed park when the failed node is a
remediation node AND a live agent session surface is still registered for the
task. Scoped via isRemediationGraphNode (IR workflowAction + built-in node-id
fallback) and hasLiveTaskSessionSurface; genuine execute/merge failures and
remediation failures with no live session still park failed unchanged.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Block the merge requester when fast workflow traversal reaches merge before implementation steps are complete, and recover stale no-op merge proof by requeuing executable work instead of looping in blocked finalization.
Fusion-Task-Id: FN-7261
