Function normalizeSkillSlug

packages/cli/src/telemetry/skill.ts:18–22

(raw: unknown)

 * simply omitted rather than carrying garbage).
 */
export function normalizeSkillSlug(raw: unknown): string | undefined {
  if (typeof raw !== "string") return undefined;
  const slug = raw.trim();
  return SKILL_SLUG.test(slug) ? slug : undefined;
}