export interface PendingTurnSnapshot {
    /**
     * Store the user's pending turn now.
     *
     * Idempotent: the later `onStart` store replaces the thread with the same or a
     * more complete list, so calling this changes what is visible EARLIER without
     * changing what is visible at the end.
     *
     * Rejects only if the store itself fails. Callers treat that as non-fatal — a
     * run that cannot pre-store its turn is still a run worth doing.
     */
    snapshot: () => Promise<void>;
}
export declare const PendingTurnCapability: import('./capabilities.js').Capability<PendingTurnSnapshot, "pending-turn">;
export declare const getPendingTurn: import('./capabilities.js').CapabilityGetter<PendingTurnSnapshot>, providePendingTurn: import('./capabilities.js').CapabilityProvider<PendingTurnSnapshot>;