const PROFILE_NAME_RE = /^[a-z0-9][a-z0-9_-]{0,63}$/i;

export function isValidProfileName(value: string): boolean {
  if (!value) return false;
  // Keep it path-safe + shell-friendly.
  return PROFILE_NAME_RE.test(value);
}

export function normalizeProfileName(raw?: string | null): string | null {
  const profile = raw?.trim();
  if (!profile) return null;
  if (profile.toLowerCase() === "default") return null;
  if (!isValidProfileName(profile)) return null;
  return profile;
}