//! Native client transports — HTTP/2 (h2c) and HTTP/3 (QUIC).
//!
//! These consume the cross-platform transport seam in
//! [`crate::shared::transport`] (the `Transport` trait, `ByteSink`/`ByteSource`,
//! stream helpers) but are native-only because they drive
//! `foundation_netio::http2` / `foundation_netio::quic` directly.
/// HTTP/3 over QUIC (F35). Behind the `h3` feature: it pulls `quinn-proto`.