Add complete Noise Protocol implementation (noiseprotocol.org): - NoiseState with X25519, ChaCha20-Poly1305 - Patterns: XX (mutual auth), IK (0-RTT), NN (ephemeral) - CipherState for transport encryption - NoiseHandshake with MIMIC skin integration Add comprehensive BDD feature tests: - noise_protocol.feature with 40+ scenarios - Tests for handshake, security properties, PNG integration Update RFC-0015: - Add Noise Protocol integration section - Architecture diagram showing Noise + PNG + MIMIC layers - Update implementation phases All tests passing
- TollClearanceProof structure with STARK support - Immediate and lazy (Kenya) verification modes - NonceCache for replay prevention - 6 passing unit tests Refs: RFC-0315 v0.3.0