The Squared Share: A Two-Selection Baryogenesis Construction from the Sever's Own Statistics

The sever's selection object owns two shares, 1/200 and 1/211, never spent at the baryogenesis address. A carrier counted by the sever must be selected on both faces; two independent selections square the share imbalance: eps = (1/200 - 1/211)^2 = 6.7945e-8, inside the required window [3.91e-8, 3.52e-7] at -0.236 dex from eps_req = 1.17e-7. Implied eta_B = 3.5e-10 vs measured 6.1e-10 - the 42% shortfall is printed as the construction's exposed flank. The programme's numerology fence is cited on the construction, not waived; falsifiers pre-registered.