TPL.18 - Workflow association data (auto-started Approval) + Three-state (SetField step, ResumeAtStep) + Request Change
(claude-code, 2026-10-02 08:06 UTC) Shipped in TPL.17/TPL.18: Workflow.Approval, Workflow.ThreeState, Workflow.CollectFeedback as reusable workflows on a durable task step, associated by EventReceiver with Data (AssociationData).