import { type ExternalUpgradeJob, type ProcessIdentity } from './upgrade-job.js';
import { spawnStableLauncher } from './launcher-manager.js';
export declare function loadUpgradeStatus(jobId?: string): ExternalUpgradeJob;
export declare function readUpgradeLog(jobId?: string): string;
export declare function repairExternalUpgrade(deps?: {
    spawnLauncher?: (launchSpecPath: string, onSpawn?: (pid: number) => void) => number;
    waitForHealth?: (job: ExternalUpgradeJob) => Promise<ExternalUpgradeJob['repairRuntime']>;
    terminateProcessTree?: (identity: ProcessIdentity) => Promise<void>;
}): Promise<{
    job: ExternalUpgradeJob;
    launcherPid: number;
}>;
export declare function resumeInterruptedUpgrade(jobId: string, deps?: {
    spawnLauncher?: typeof spawnStableLauncher;
}): 'terminal' | 'worker-running' | 'started';
export declare function runUpgradeRetention(now?: Date): {
    removedVersions: string[];
    removedJobs: string[];
    removedStaging: string[];
};