Why: preserve the user's continuation from the delivered r1 specification into a concrete implementation and verification plan.
Evidence: precheck and plan source/link/example checks are preserved as SELF receipts in the task card; code, CI and platform trials remain NOT_RUN.
Impact: approval metadata, plan association and project entry only; the delivery mode remains unchanged and the plan awaits stage 5 review.
Refs: policy/merge-queue.md; .task/feature-merge-queue-policy-draft.md; Documents docs/proposals/2026-10-13-merge-queue-implementation-plan.md