//! `haz` subcommand implementations.
//!
//! Each submodule wires a single parsed [`crate::cli::Cmd`] variant
//! to the libraries that perform the work. The submodules return a
//! [`miette::Result<i32>`] (the process exit code on success, a
//! rendered diagnostic on failure); the binary entry point applies
//! the returned code via [`std::process::exit`].