Branchlet is an interactive CLI tool for creating and managing Git worktrees. It provides both a Terminal User Interface (TUI) built with Ink/React and a scriptable command-line interface for automating worktree operations. The tool simplifies Git worktree management by offering features like intelligent branch handling, automatic file copying to new worktrees based on configurable patterns, post-creation command execution, and shell integration for quick directory switching. It supports project-specific and global configuration through JSON files and includes robust error handling with user-friendly messages.