/**
 * `franklin doctor` — one-command health check.
 *
 * The single highest-leverage onboarding improvement: most early failures
 * are environmental (Node too old, no wallet, wrong chain, unreachable
 * gateway, malformed MCP config). `franklin doctor` pokes each of those in
 * sequence, prints a verdict per check, and exits non-zero if anything is
 * broken so CI scripts can gate on it.
 *
 * Human-readable by default. Pass `--json` for machine-parseable output
 * (useful for the ink REPL `/doctor` or external monitoring).
 */
export declare function doctorCommand(opts?: {
    json?: boolean;
}): Promise<void>;
