/**
 * The run's session ledger: a deterministic record of WHAT EACH SESSION
 * DID, derived from the working tree (git status + mtimes around the
 * session), never from the model's own account — so it cannot be
 * hallucinated. Later sessions receive the ledger inside their task text
 * and read the named files directly instead of re-surveying the
 * repository, which was the single largest observed token cost (each
 * cold session spent ~15 turns rediscovering what the previous one
 * wrote).
 *
 * Persisted as a sidecar in the journal directory so a RESUMED run's
 * sessions are exactly as informed as the original's; the journal
 * deletes it when the run finishes.
 *
 * Pure-judgment steps (failure-judgment) neither receive nor produce
 * entries: their task already carries everything they judge, and they
 * touch no files.
 */
import type { CommandRunner } from "./commands.js";
import type { StepExecutor } from "./claude-step.js";
import type { WorkKind } from "./model-roster.js";
export declare const LEDGER_FILENAME = "session-ledger.json";
export interface LedgerEntry {
    kind: WorkKind;
    /** Repo-relative paths the session changed; empty = it changed no files. */
    files: string[];
}
export interface SessionLedger {
    /** Wrap a step executor: inject the ledger into tasks, record what ran. */
    wrap(step: StepExecutor): StepExecutor;
}
export declare function sessionLedger(options: {
    repoRoot: string;
    journalDir: string;
    runner: CommandRunner;
}): SessionLedger;