export declare const EMPTY_DELIVERY_SENTINEL = "<eve-empty-delivery/>";
export declare const CONDITIONAL_DELIVERY_INSTRUCTION = "Conditional delivery\nOnly when the current task explicitly makes delivery conditional and there is nothing to report, reply with exactly <eve-empty-delivery/> and no other text. Do not use this marker for ordinary conversations, after input or approval responses, or merely because you have no additional commentary. Never return an empty response; use the marker to intentionally deliver nothing.";
export declare function hasEmptyDeliverySentinel(text: string | null | undefined): boolean;