//! stygian-api binary — REST API server for pipeline management
//!
//! Reads the following environment variables:
//!
//! | Variable | Default | Description |
//! | ---------- | --------- | ------------- |
//! | `STYGIAN_API_KEY` | `"dev-key"` | API key for `/pipelines` routes |
//! | `STYGIAN_BIND` | `"0.0.0.0:8080"` | TCP address to listen on |
//! | `RUST_LOG` | `"info"` | Tracing filter |
//!
//! # Usage
//!
//! ```bash
//! STYGIAN_API_KEY=secret cargo run --bin stygian-api
//! curl -H "X-Api-Key: secret" http://localhost:8080/pipelines
//! ```
use ApiServer;
async