TFPT v2.8 Prediction Sheet: Cosmic Birefringence (CMB Polarization Rotation β = 0.2424°)

This technical note states the TFPT v2.8 prediction for an achromatic cosmic birefringence rotation of the CMB linear polarization: β = 0.2424 degrees in the IAU sign convention. It explains the topological origin of the minimal nontrivial excursion sector and clarifies the measurement requirements for a meaningful test, in particular the need for absolute polarization angle calibration using external calibrators. The note explicitly distinguishes calibrated analyses from EB self calibration methods that null a constant rotation by construction, and it provides falsification thresholds for future multi frequency and potentially tomographic β(z) analyses.