import { type OptimizeTargetSet } from "./targets.js";
/** Per-candidate cache-partition token. `EvalCache` keys runs by
 *  `(key, inputId)`; under the new model nothing on-disk lives at the workspace
 *  itself — per-iteration artifacts live under `runs/<runId>/agent-runs/<key>/`,
 *  created by `evalRunLoadedInputs` rather than here. */
export type Workspace = {
    key: string;
};
/** Owns the per-candidate cache-identity counter. No filesystem ownership. */
export declare class WorkspaceManager {
    private counter;
    /** Mint a fresh cache-partition token. */
    fork(): Workspace;
    /**
     * Write a champion file set back to the original sources, sha-checked: every
     * discovered file must still match its discovery-time hash, or the whole
     * writeback aborts. Only changed files are written. (Never took a Workspace.)
     */
    writeBack(source: OptimizeTargetSet, championFiles: Record<string, string>): void;
}