/**
 * What the dashboard says when a sign-in does not get off the ground.
 *
 * Signing in reaches outside the process: it starts a browser, talks to a
 * debug port, and waits on a network. Any of those can throw rather than
 * return a failure, and an error escaping the dashboard's loop ends the whole
 * program with a stack trace. From the operator's side that reads as "pressing
 * l broke my terminal", which is both alarming and the wrong thing to go and
 * investigate.
 *
 * So the error becomes a line on the dashboard instead. Kept as a pure function
 * because the message is the part worth pinning: it has to name the account, so
 * a two-account setup does not leave you guessing which one failed, and it has
 * to carry the reason, or the operator is told something went wrong and nothing
 * about what.
 */
export declare function signInFailureNotice(account: string, err: unknown): string;