gd-plug is a plugin manager for Godot 4.x, inspired by vim-plug. It provides a command-line interface to install, update, and uninstall Godot plugins (Git repositories) based on declarations in a `plug.gd` configuration file. The tool supports parallel operations, version freezing (by branch, tag, or commit), development vs. production modes, and clean uninstallation. The architecture centers around a single script (`plug.gd`) that extends Godot's SceneTree, processing command-line arguments and managing plugin lifecycle through Git operations and file system manipulations. Key features include dependency tracking via a local configuration file, threaded parallelism for efficient operations, and robust file handling with safety checks to prevent overwriting user files.