/**
 * The journal that makes runs resumable (algorithm.md, "Every run is
 * resumable"): one JSON file per feature under the journal directory,
 * holding exactly a RunCheckpoint — completed slice names plus the
 * in-flight slice's recorded phase results. Values are round-tripped
 * structurally (slicePhaseTracker casts them back to their phase's type),
 * so everything recorded must be plain JSON — which every phase result is
 * (OpenApiChange, ScenarioSlice[], null).
 *
 * Writes are atomic (tmp + rename): a crash mid-write leaves the previous
 * checkpoint, never a torn file. Intra-phase progress is deliberately not
 * journaled — checklists are rebuilt by inspecting the working tree.
 */
import type { RunJournal } from "./run-journal.js";
export declare function fileRunJournal(journalDir: string): RunJournal;