BCT Letter 87 — CP Violation from BCT Void Geometry

Letter 87 of the BCT Superfluid Lattice Model programme. The CP-violating phase of the CKM quark mixing matrix — responsible for the matter-antimatter asymmetry of the universe — is derived from BCT void geometry with zero free parameters. The result: cos(δ_CP) = 2r_oct = √2−1 = 0.414214, giving δ_CP = arccos(√2−1) = 65.530°, matching the PDG value 65.44°±0.85° with error +0.131%. The CP phase is the arccosine of the octahedral void diameter. Together with the Cabibbo angle sin(θC) = 2r_tet (Letter 86), the geometric parallel is exact: the tetrahedral void diameter gives quark generation mixing; the octahedral void diameter gives CP violation. The matter-antimatter asymmetry of the universe is encoded in the geometry of the BCT Planck-scale vacuum. Predictions #124–#125.