This gives Claude everything it needs to work with Bun's runtime: CLI flags, watch vs hot reloading, environment variables, and all those globals that come out of the box. The flag positioning matters here (put them before `run`, not after), and you get practical stuff like preload scripts and stdin execution. Useful when you're debugging why imports aren't resolving or setting up a project with bunfig.toml. The watch mode comparison is helpful since hot reloading preserves state while watch does full restarts. Covers the 80% case well, and the reference pointers tell you where to dig deeper for module resolution quirks or complete flag lists.
npx skills add https://github.com/secondsky/claude-skills --skill bun-runtime