/**
 * One committed frontier, read whole, as values nothing live still owns.
 *
 * This is the other half of the artifact boundary. `writeXmdArtifact()` accepts
 * a complete detached snapshot and knows nothing about runs; this produces one
 * from a run and knows nothing about containers. Everything in between — the
 * executor lock, the recovery copy, where the file goes — belongs to the export
 * operation that calls both.
 *
 * ## Whole, not a prefix
 *
 * `readForkSource()` reads the prefix one checkpoint selects, because a fork
 * inherits history up to a point and writes its own beginning. An export
 * inherits nothing: it records what the run committed, so it reads every
 * journal row, every retained root, and every other XMD-owned record the run
 * holds. The two are deliberately separate readers over the same tables rather
 * than one reader with a mode, because "up to this checkpoint" and "everything"
 * differ in what they are allowed to leave out.
 *
 * ## Read, never repair
 *
 * Everything here is a `SELECT` on a connection the caller opened read-only.
 * Nothing settles a status, relabels a stop reason, replays an event, or
 * completes a half-written Workspace. A run whose host died mid-execution
 * exports as the `running` run it is — the artifact records what was committed,
 * and inventing a tidier frontier would be recording something that never
 * happened.
 */
import type { DatabaseSync } from "node:sqlite";
import type { Json } from "@executablemd/durable-streams";
import type { DetachedXmdArtifact } from "./artifact/types.js";
import type { WorkflowRunRecord } from "../storage/record.js";
/**
 * The complete committed state of one run, as the artifact writer's input.
 *
 * `closure` is checked against the definition this frontier actually retains
 * before it is carried, so a caller cannot seal one run's evidence around
 * another run's Markdown. The writer checks the bytes hash to the identities
 * the definition names; what is checked here is that it is the right
 * definition at all.
 */
export declare function readExportFrontier(database: DatabaseSync, record: WorkflowRunRecord, path: string): Omit<DetachedXmdArtifact, "definition">;
/** Where this host could fetch the definition from, as the run last recorded it. */
export declare function readRetrievalMetadata(database: DatabaseSync): Json | undefined;