Why: bind the task validation checkpoint to the latest integration baseline. Evidence: SELF recursive component checks; sync_base=b1caa7cae13d35ec6e62c883d1f379aee35e35ef; candidate=f124da534f0d1ad1159e796929a643c27a564bdf. Impact: task metadata only. Refs: .task/feature-rdm-u1-closeout.md