Add vlmfreeze_loc_ac20_10k weights (eval50 62.7%)

Add vlmfreeze_loc_ac15_20k weights (eval50 64.7%)

Add vlmfreeze_loc_ac10_10k weights (eval50 63.4%)

Add pi0.5 teacher ac10 30k (ckpt 29999; eval h=5 59.2%, h=10 62.6%)

initial commit