Promote v7full to canonical bootstrap_model.pt (§150)

promote v7e30 to canonical (§149 verification: SealBot 16.4% beats v6 11.4% p=0.022)

overwrite canonical bootstrap_model.pt with v7 (§148 promotion: SealBot 16% vs v6 11%, H2H parity)

Update bootstrap to v6

bootstrap v5 (18-plane, SE+aux, 0-150plys)