Why: Close the delivered I1 task without modifying unrelated task records or shared workspaces. Evidence: Dev PR 534 merged after all three exact-head CI jobs passed; RDM 360/362 and Documents 98/99 actual results and independent reviews are retained. Impact: Archive this task card and preserve original receipts only; leave all worktrees, branches, production services and later IAM increments unchanged. Refs: Dev PR 534; policy/delivery.md task closure authorization; IAM I1.