import { type V3Dag } from './dag.js';
import type { ExecutionProfileSnapshot } from './runtime-host-contract.js';
export declare const PORTABLE_RUN_SNAPSHOT_FILE = "portable-run.snapshot.json";
export interface FrozenPortableRunDefinition {
    dag: V3Dag;
    executionProfiles: Map<string, ExecutionProfileSnapshot>;
}
/**
 * Freeze the complete portable execution contract before the journal starts.
 * A legacy run without this artifact cannot prove its original host profile,
 * so recovery fails closed instead of blessing the caller's current config.
 */
export declare function assertOrCreatePortableRunSnapshot(runDir: string, dag: V3Dag, profiles: ReadonlyMap<string, ExecutionProfileSnapshot>): FrozenPortableRunDefinition;
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