/**
 * The exit-code contract, in one place. gh's shape (`gh help exit-codes`,
 * ledger captures/tools/zz-probe2-json-headless.log:40-52): 0 ok, 1 failed,
 * 2 cancelled, 4 authentication. Ours adds 3 for a thing that does not exist,
 * and 2 covers both a usage error and a question with no terminal to ask it
 * on (ledger row P40, decided 2026-09-10). sysexits.h's 64-78 range was
 * declined: gh, stripe and flyctl all use small numbers.
 */
export declare const EXIT_CODES: {
    /** The command did what was asked. */
    readonly ok: 0;
    /** The command failed for any reason not listed below. */
    readonly failed: 1;
    /** Options the command does not understand, or a question with no terminal. */
    readonly usage: 2;
    /** The thing the command names does not exist. */
    readonly notFound: 3;
    /** A token is needed and none is saved, or Relay did not accept the one it has. */
    readonly signInNeeded: 4;
};
export type ExitCode = (typeof EXIT_CODES)[keyof typeof EXIT_CODES];
/** The table `relaymessenger help exit-codes` prints, gh's sentences with our cases. */
export declare const exitCodesHelp: () => string;
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