h33-substrate-verifier 0.1.0

Reference implementation of the H33 substrate response attestation verifier. Verifies X-H33-Receipt HTTP headers against three post-quantum signature families (Dilithium ML-DSA-65 + FALCON-512 + SPHINCS+-SHA2-128f) over the H33 58-byte substrate primitive. Standalone, no internal H33 dependencies, WASM-target-compatible.