Internal plan writer. Produces risk-proportional implementation plans with agreed seams, coherent slices, work-kind evidence, exact paths, and durable lifecycle metadata.
$npx -y skills add howells/arc --skill detailInstalls into the current project.
Run `npx skills use "https://github.com/howells/arc" --skill "howells/arc/detail"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/howells/arc" that are relevant to the current task. Run `npx skills add "https://github.com/howells/arc"` and select the relevant skills, then follow their instructions.