Foundational version of The Siamese Big Bang, introducing a directional CPT-symmetric topology inferred from CHIME/FRB data (N=100, DM≥800, |b|>20°). Shows morphological but marginal evidence (A≈90 pc cm⁻³, φ₀≈155°, p≈0.1) for a cosmological anisotropy along the Siamese axis.

Testing a CPT-symmetric twin-universe framework where a slight phase desynchronization (≈5%) between Siamese universes generates the observed matter–antimatter asymmetry. Includes numerical scans, CMB–FRB anisotropy tests, and reproducible data analysis scripts.