Function checkOverwrite

pkg/cmd/skills/install/install.go:1035–1077

(opts *InstallOptions, skills []discovery.Skill, targetDir string, canPrompt bool)

}

func checkOverwrite(opts *InstallOptions, skills []discovery.Skill, targetDir string, canPrompt bool) ([]discovery.Skill, error) {
	var existing, fresh []discovery.Skill
	for _, s := range skills {
		dir := filepath.Join(targetDir, s.Name)
		if _, err := os.Stat(dir); err == nil {
			existing = append(existing, s)
		} else {
			fresh = append(fresh, s)
		}
	}

	if len(existing) == 0 {
		return skills, nil
	}

	if opts.Force {
		return skills, nil
	}

	if !canPrompt {
		names := make([]string, len(existing))
		for i, s := range existing {
			names[i] = s.DisplayName()
		}
		return nil, fmt.Errorf("skills already installed: %s (use --force to overwrite)", strings.Join(names, ", "))
	}

	var confirmed []discovery.Skill
	for _, s := range existing {
		prompt := existingSkillPrompt(targetDir, s)
		ok, err := opts.Prompter.Confirm(prompt, false)
		if err != nil {
			return nil, err
		}
		if ok {
			confirmed = append(confirmed, s)
		} else {
			fmt.Fprintf(opts.IO.ErrOut, "Skipping %s\n", s.DisplayName())
		}
	}

	return append(fresh, confirmed...), nil
}

func existingSkillPrompt(targetDir string, incoming discovery.Skill) string {
	skillFile := filepath.Join(targetDir, incoming.Name, "SKILL.md")