Archives the current change to spec/archive/YYYY-MM-DD-<name>/. Only invoked when the user explicitly says "archive". Writes an archive-stage retrospect, checks for uncommitted code, and is guarded by the check-archive hook.
$npx -y skills add kamioj/spec-workflow --skill spec-archiveInstalls into the current project.
Run `npx skills use "https://github.com/kamioj/spec-workflow" --skill "kamioj/spec-workflow/spec-archive"` 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/kamioj/spec-workflow" that are relevant to the current task. Run `npx skills add "https://github.com/kamioj/spec-workflow"` and select the relevant skills, then follow their instructions.