//! Channels protocol: N logical channels over one transport stream
//! (ADR-034, amended by ADR-035 — no `stream_type` concept).
//!
//! Channel 0 is pre-negotiated as `alk/call` (ADR-036); channels
//! 1..N are opened dynamically via per-ALPN open ops on channel 0
//! (ADR-047). The channels layer is a re-framing proxy: it converts
//! between "one transport stream carrying N channels" (the wire) and
//! "N independent `BiStream` handles" (what handlers see).
//!
//! ## Module layout
//!
//! - [`wire`]: the 8-byte chunk header (sync core, WASM-clean).
//! - [`reassembly`]: per-channel `MpscSendStream` / `MpscRecvStream` —
//!   the reassembled `AsyncRead + AsyncWrite` pair the handler sees.
//! - [`mux`]: the mux (`MuxHandle` / `MuxRunner`) — frames per-channel
//!   bytes back onto the transport.
//! - [`manager`]: `ChannelManager` + `ChannelState` + the channel map.
//! - [`source`]: `ChannelBidiStreamSource` — implements
//!   `BidiStreamSource` for a single channel (yield-once `accept_bi`).
//! - [`adapter`]: `ChannelsAdapter` — `ProtocolHandler` for
//!   `alk/channels` (the demux loop).
//! - [`operations`]: `ChannelOperations` — registers `channel/close`,
//!   `channel/control`, `channel/resources/subscribe` on the call
//!   `OperationRegistry`; the per-ALPN open ops are registered by the
//!   ALPN crates via `ChannelCore` (ADR-047 §3).
//! - [`policy`]: `ChannelLifecyclePolicy` + `PerIdentityChannelPolicy`
//!   (ADR-041, amended by ADR-047 §7 — opener ledger).
//! - [`pump`]: `pump_bidi` — the two-pump data-plane helper (alknet
//!   ADR-078, pinned upstream by ADR-050).
//! - [`relay`]: `ChannelRelay` — the in-tree relay component (ADR-042
//!   as amended by ADR-051): translate hop + `pump_bidi` byte-forward
//!   hop for from_call-imported marked specs re-exposed on a hub's
//!   consumer-leg channel-0 registry.
//! - [`resource`]: `ResourceEnumerators` — the enumerator registry
//!   behind `channel/resources/subscribe`'s live subscription
//!   (ADR-053).
//! - [`hub_leg`]: `HubLegTemplate` — the hub-leg install template
//!   (ADR-051 §5): fork + generic channel ops + bootstrap discovery +
//!   plain bundles + relay openables + serving identity, composed into
//!   the `install_channel_zero` hook every hub side needs.
//! - [`client`]: `ChannelClient` — transport-agnostic
//!   `from_connection` (ADR-043).
//! - [`self::env`]: `ChannelOperationEnv` extension trait (ADR-047 §4 —
//!   keeps the call crate free of channels types).
//!
//! See `docs/architecture/` for the full specification.

pub mod adapter;
pub mod client;
pub mod env;
pub mod hub_leg;
pub mod manager;
pub mod mux;
pub mod operations;
pub mod policy;
pub mod pump;
pub mod reassembly;
pub mod relay;
pub mod resource;
pub mod source;
pub mod wire;