import type { AuthoringGraphDocument } from "@x12i/graphenix-executable-contracts";
import type { KnowledgeRef } from "@x12i/graphenix-executable-contracts";
export interface KnowledgeExtensionPayload {
    jobKnowledge?: KnowledgeRef[];
    jobPagentiKnowledge?: KnowledgeRef[];
}
export declare function readKnowledgeExtension(doc: AuthoringGraphDocument): KnowledgeExtensionPayload | undefined;
export declare function writeKnowledgeExtension(doc: AuthoringGraphDocument, payload: KnowledgeExtensionPayload): AuthoringGraphDocument;
export declare function promoteKnowledgeExtension<T extends AuthoringGraphDocument>(doc: T): T;
/**
 * Lift legacy `metadata.extensions` namespaces into canonical 2.1.0 metadata fields.
 */
export declare function promoteAuthoringExtensions<T extends AuthoringGraphDocument>(doc: T): T;
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