npx CLI Tool Development (Bun-First) Build and publish npx-executable command-line tools using Bun as the primary runtime and toolchain, producing binaries that work for all npm/npx users (Node.js runtime). When to Use This Skill Use when: - Creating a new CLI tool from scratch - Building an npx-executable binary - Setting up argument parsing, sub-commands, or terminal UX for a CLI - Publishing a CLI tool to npm - Adding a CLI to an existing library package Do NOT use when: - Building a library without a CLI (use the skill) - Building an application (not a published package) - Working in a mo…