Module mutation 

Structs

MutationChain

HYDRA mutation chain — each token mutation ratchets a SHA3-256 hash chain. This provides Post-Compromise Security (PCS): a stolen token becomes invalid once the legitimate holder advances the chain.

Functions

certify_entropy

KOLMOGOROV entropy certification: verify that a byte slice is “sufficiently random” by checking that no 4-byte pattern repeats more than a statistical threshold. Real randomness test: run-length compression ratio must be > 0.85.