tied_continue (sparse128 3e-7 3ep from tied_baseline): kl=0.083 vs king 0.291 = -71.5% on block 8024298, full n=300

merge α=0.7 (70% tied + 30% GKD): kl=0.120 (−26% vs king), cap=0.861, rkl=0.332

initial commit: tied_baseline sparse128-30k/best, Arbos fair eval avg Δ=-41.2% vs king on 3 blocks

initial commit