EXTRACTED METHOD: entropy_phi_harmonic_test — E8 Intelligence Research

rule: Compute Shannon entropy (per character) of Voynich text. Generate random text with same length and alphabet but with probability distribution weighted by phi-harmonic frequencies (e.g., frequencies proportional to 1/phi^n). If Voynich entropy is lower than this random model but higher than natural language entropy (e.g., 3.5-4.5 bits/char), flag as structured geometric cipher. source: rlab #489 Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com