/**
 * Undo journal for `zeroshot setup apply` / `zeroshot setup undo`.
 *
 * One journal entry per setting this setup owns: { scope, path, repoRoot,
 * priorValue, appliedValue, appliedAt }. `priorValue: null` means the key
 * did not exist before apply, so undo deletes it rather than restoring it.
 * Shared by lib/setup-apply.js (writer) and lib/setup-undo.js (reader) so the
 * nested-path mutation and equality semantics can't drift between the two.
 */
interface JournalEntry {
    readonly appliedAt: string;
    readonly appliedValue: unknown;
    readonly path: string;
    readonly priorValue: unknown;
    readonly repoRoot: string | null;
    readonly scope: string;
    readonly [key: string]: unknown;
}
interface SetupJournal {
    entries: JournalEntry[];
    version: number;
    [key: string]: unknown;
}
declare function getJournalPath(): string;
declare function loadJournal(): SetupJournal;
declare function saveJournal(journal: SetupJournal): void;
declare function upsertJournalEntry(journal: SetupJournal, entry: JournalEntry): void;
declare function setNestedValue(target: Record<string, unknown>, pathStr: string, value: unknown): void;
declare function deleteNestedKey(target: Record<string, unknown>, pathStr: string): void;
declare function deepEqual(left: unknown, right: unknown): boolean;
declare const _default: {
    getJournalPath: typeof getJournalPath;
    loadJournal: typeof loadJournal;
    saveJournal: typeof saveJournal;
    upsertJournalEntry: typeof upsertJournalEntry;
    getNestedValue: (source: Record<string, unknown>, pathStr: string) => unknown;
    setNestedValue: typeof setNestedValue;
    deleteNestedKey: typeof deleteNestedKey;
    deepEqual: typeof deepEqual;
};
export = _default;