Function identityPathTier

packages/core/sdk/src/health-check.ts:447–452

(path: string)

 *  or -1 when it doesn't look like an identity at all. Shared by the sample
 *  picker below and the candidate ranking in the connect flow. */
export const identityPathTier = (path: string): number => {
  const segments = path.split(".");
  const named = segments.filter((segment) => !/^\d+$/.test(segment));
  const leaf = (named[named.length - 1] ?? "").toLowerCase();
  return IDENTITY_KEY_TIERS.findIndex((keys) => keys.includes(leaf));
};

/** Order sample rows identity-first: rows whose leaf key names the account
 *  (email > login > name > id) come before the rest, which keep response