//! Reverse proxy from the API gateway to local MCP and agent backends.
//!
//! [`ProxyEngine`] is the entry point; the `auth` submodule is the single
//! authorization boundary for proxied `/api/v1/mcp/*` and `/api/v1/agents/*`
//! traffic, emitting RFC 9728 OAuth challenges on unauthenticated requests.
pub use ProxyEngine;