/**
 * Capture Agent — Program content hashing (run provenance)
 *
 * Stable content hash of an ExecutionProgram, persisted as `program_hash` on
 * each run so a screenshot can be traced back to the exact program bytes that
 * produced it. Isolated from program-migrations.ts to keep `node:crypto` out of
 * the schema validation import chain.
 */
import type { ExecutionProgram } from './execution-types.js';
/** sha256 of the canonicalized program (stable across runs of the same program). */
export declare function hashProgram(program: ExecutionProgram): string;