BeefAI™ Champion — Engine Expansion and Technical Supplement: Prepotency, Virtual Calf, Antagonism Detection, GENEius Narrator V2, BeefAI Signals™, Carbon Layer 4, Grazing Intelligence, and Certification System

This technical supplement documents the expanded engine suite of BeefAI™ Champion beyond the core methodology. Engines covered include the Prepotency Index, Virtual Calf Predictor, Antagonism Detection system, GENEius Narrator V2 (AI narration engine), BeefAI Signals™ (catalogue-level alert system), Carbon Efficiency Index (CEI) Layer 4, Grazing Intelligence module, and the BAI-CERT certification system. Supplement to: BeefAI™ Champion — Comprehensive Scoring Methodology and Technical Reference V3.0 (DOI: 10.5281/zenodo.19211540). All scoring and classification outputs are deterministic. AI-generated content is clearly distinguished from mathematical output. Calibrated to the March 2026 TransTasman Angus Cattle Evaluation (TACE), published by Angus Australia. Engines: APEX • ACE • CER • MEI • GENEius • BeefAI Signals™ • CEI • BAI-CERT