//! # DOOR / FRONTDOOR
//! Edge ingress orchestration and border gateway security.
//!
//! These crates manage the "Aperture" of the system. While `frontdoor`
//! handles the macro-scale border (the edge of your network), `door`
//! provides granular, port-level access control.
//!
//! ## Security Principles
//! * **Perimeter:** Defining the hard boundary between the Planet and the Mine.
//! * **Ingress:** Strictly controlled entry via verified Recipes.
//! * **Egress:** Ensuring classified data only exits through authorized Doors.