import { type HarnessLoopOptions } from './harness-loop.js';
export declare const STAGED_CHAMPION_FILE = "harness-champion.manifest.json";
export type HarnessWorkerInput = HarnessLoopOptions<any>;
export type LoadHarnessInput = (projectRoot: string) => HarnessWorkerInput | null;
export interface HarnessWorkerResult {
    ran: boolean;
    reason: string;
    accepted?: boolean;
    staged?: boolean;
    admitted?: number;
    rejected?: number;
}
export declare function harnessLoopOptedIn(): boolean;
/**
 * Execute one bounded, opt-in harness-loop tick for `projectRoot`. Injectable
 * `loadInput`/`optInOverride` for tests. Best-effort; never throws.
 */
export declare function runHarnessLoopWorker(projectRoot: string, opts?: {
    loadInput?: LoadHarnessInput;
    maxTrajectories?: number;
    optInOverride?: boolean;
}): Promise<HarnessWorkerResult>;
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