add contamination probe result (hospital 25% vs post-cutoff wild 0%)

card: maintenance section, scorer version pin (edda8b3, NaN-fix 34e5c63), RAI/datasheet fields + contamination probe

n=34 qualifier on wild inject-recovery mean

Scope dataset viewer to homogeneous hospital-pair configs (fixes viewer error banner)

WildClean v1: 42-pair repair bench + 35-table wild suite + 239-table trust audit + vocabs

initial commit