/**
 * Retry a delivery until it lands (or the target is gone).
 *
 * The reload continue-nudge (server.ts `continueAfterReload`) is delivered the
 * moment `restartSession` resolves. But a `--resume` can still be finishing its
 * own resume turn (the session reads BUSY), or the freshly respawned TUI is not
 * yet accepting a paste — and a SINGLE refused delivery left the agent idle
 * forever, with nothing to try again. That was the bug: an agent reloaded fine,
 * then nothing happened.
 *
 * So the delivery retries, backing off, until it succeeds or the session no
 * longer exists. Kept here — pure, with `deliver` / `alive` / `sleep` injected —
 * so the retry policy is unit-tested without a server or a real TUI.
 */
export interface DeliverResult {
    ok: boolean;
    reason?: string;
}
export interface RetryOptions {
    /** Total attempts before giving up. */
    attempts?: number;
    /** Which refusals may be replayed. Defaults to the cron's own rule. */
    retryable?: (reason: string | undefined) => boolean;
    /** Delay between attempts (ms). */
    delayMs?: number;
    sleep?: (ms: number) => Promise<void>;
}
export declare function deliverWithRetry(deliver: () => Promise<DeliverResult>, alive: () => boolean, { attempts, delayMs, sleep, retryable }?: RetryOptions): Promise<DeliverResult & {
    attempts: number;
    gone?: true;
}>;