/**
 * Register the daemon side of a SessionStart worker acknowledgement before the
 * IPC message is sent. The timeout is deliberately fail-open: older or
 * overloaded workers must not leave Claude's SessionStart hook stuck forever.
 */
export declare function waitForSessionReadyAck(requestId: string, timeoutMs: number): Promise<boolean>;
/** Resolve a live acknowledgement. Unknown/duplicate ids are harmless. */
export declare function acknowledgeSessionReady(requestId: string): boolean;
/** Fail a waiter immediately when forwarding to the worker itself failed. */
export declare function cancelSessionReadyAck(requestId: string): boolean;
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