Node.js daemon: Ed25519 identity + self-signed TLS, signed registration/ renewal with the central registry, mDNS advertising, disk-backed fetch-through asset cache with an origin allowlist. Includes a local dev-registry stand-in for the real oxmc.me endpoints and an end-to-end smoke test (register -> token -> cache miss/hit -> SSRF rejection). See README.md for the full protocol and trust model.