//! # rutster-trunk
//!
//! **Status:** stub. Fills in at spearhead step 5 (a real phone number via rented transport).
//!
//! Carrier / PSTN reach for rutster — **rented transport, no first-party SIP**
//! ([ADR-0007](../../../docs/adr/0007-trunk-rented-transport.md)). This crate will hold the
//! rented-transport ingress: the **CPaaS media-leg adapter** — a WebSocket server accepting a
//! provider raw-media fork (Twilio Media Streams / Telnyx) plus the provider call-control
//! client — and later the glue for an **out-of-tree SBC** when PSTN media must stay on-prem.
//! It owns **no SIP stack**: SIP lives outside the trust boundary, in the rented transport
//! (green zone — [ADR-0008](../../../docs/adr/0008-fob-and-green-zone.md)).
//!
//! Slice 1's WebRTC-only ingress needs none of this — this stub exists to lock the crate
//! boundary without anticipating code (spec §2.2). Its future dependency direction is
//! `rutster-trunk` → `rutster-call-model` + `rutster-media`: PSTN audio is resampled to the
//! canonical tap format and handed to the media plane as a media-leg ingress, parallel to
//! WebRTC.

#[cfg(test)]
mod tests {
    /// Stub crates lock boundaries; the compile-test is the lock.
    #[test]
    fn crate_compiles() {}
}