Node-Machine Runner

The `machine` package is a JavaScript runner for functions that adhere to the Node-Machine specification, an open standard for atomic, context-free subroutines. It allows developers to define functions (called 'machines') with explicit inputs and exits, enabling robust static analysis, automatic documentation generation, UI inference, and advanced toolchain integration. This package, currently at version 15.2.3, provides the core `Machine.build()` method to transform machine definitions into callable JavaScript functions. While it sees continuous development with incremental releases and pre-releases, direct usage is often unnecessary, as higher-level `node-machine` modules (like `machine-as-action` or `machine-as-script`) frequently abstract its functionality. Its key differentiator is enforcing a strict function signature and behavior via the machine spec, which promotes maintainability and composability.