https://github.com/xero/leviathan-crypto/ leviathan-crypto v1.4.0 XChaCha20Seal: bind key, call encrypt(), done! fresh nonce every call w/ no management needed. XChaCha20StreamSealer: chunked AEAD for large payloads w/ per-chunk nonces and position binding. bun i leviathan-crypto (on npm you pleb)