/**
 * Graph schema migration — structure only, does not re-scan.
 */
import { type SutraGraph } from "./types.js";
export declare const SUPPORTED_MIGRATIONS: Array<{
    from: number;
    to: number;
}>;
/** Migrate a graph object in-memory. Returns migrated graph. */
export declare function migrateGraph(raw: Record<string, unknown>): SutraGraph;
export interface MigrateResult {
    migrated: boolean;
    fromVersion: number;
    toVersion: number;
    graph: SutraGraph;
}
/** Read, migrate if needed, and optionally write back. */
export declare function migrateFile(filePath: string, write?: boolean): MigrateResult;