/**
 * `clustly explain [CODE]` — what an error code means, whose fault it is, and the fix.
 * Offline: the catalog (hosting/error-catalog.ts) is compiled in, so a builder's agent that
 * just saw `[AGENT_CRASHED]` on stderr can resolve it without a network hop or a docs fetch.
 * The rows are the same ones /llms.txt publishes — one table, rendered here as text.
 *
 * Output goes to STDOUT: the definition IS the data (a caller pipes it).
 */
/** The lines for one code, or every code when none is given; an unknown code is a usage error. */
export declare function explainLines(code?: string): {
    ok: true;
    lines: string[];
} | {
    ok: false;
    error: string;
};
export declare function explainCommand(usage: string): Promise<void>;