/** Canonical opaque identity for one immutable persisted graph generation. */
import type { CatalogIdentity } from './types.js';
/**
 * Hash the fixed lifted catalog identity tuple.
 *
 * The namespace and tuple order intentionally preserve the original MCP-owned
 * algorithm byte-for-byte. Keeping the function at the graph/read boundary
 * lets graph producers and MCP replay name exactly the same `g1:` generation
 * without creating a graph -> MCP dependency.
 */
export declare function catalogGenerationKey(identity: CatalogIdentity): string;
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