- Add hybrid PQC using liboqs: ML-DSA-65 (Dilithium) + ML-KEM-768 (Kyber) - Signatures: RSA-PSS + Dilithium (defense-in-depth) - Encryption: ML-KEM-768 (Kyber) + ElGamal - Tests for PQC hybrid operations - Cleanup: remove non-essential scripts and docs - Minimal, production-ready e-voting system