//! Command system for handling side effects in the Model-View-Update architecture.
//!
//! This module implements the Cmd pattern from Elm/Redux, allowing the Model::update()
//! function to remain pure while still triggering side effects like async operations,
//! file I/O, and clipboard operations.
use HashMap;
/// Commands represent side effects that should be executed after model updates.
/// This allows Model::update() to remain pure while still triggering necessary
/// side effects like async operations, file I/O, etc.