/**
 * The correlation key a workflow writes onto a Todo approval when it mirrors a
 * parked gate there. Its own module because both sides of the loop need it: the
 * runner formats it, and the Todo layer reads it to tell a mirrored gate (whose
 * consequences the RUN owns) apart from a native Todo review gate.
 */
/** Stable correlation key tying a Todo approval back to the node that parked. */
export declare function todoApprovalRef(run: {
    workflowId: string;
    id: string;
}, nodeId: string): string;
export declare function parseTodoApprovalRef(ref: string | null): {
    workflowId: string;
    runId: string;
    nodeId: string;
} | null;
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