import type { JobMeta } from "./job-types.js";
export declare const LOG_FILE = "output.log";
export declare const EXIT_FILE = "exit";
export declare const SHARED_HOME_DIR = "home";
/** Read once at module load so platform-mocked suites can pin behavior before import. */
export declare const isWindows: boolean;
export declare function isDirectory(target: string): boolean;
export type MetaRead = {
    kind: "ok";
    meta: JobMeta;
} | {
    kind: "absent";
} | {
    kind: "unreadable";
};
export type LockRead = {
    kind: "holder";
    jobId: string;
} | {
    kind: "garbage";
} | {
    kind: "absent";
} | {
    kind: "unreadable";
};
export declare function resolveJobsRoot(configDir?: string): string;
export declare class JobStore {
    readonly root: string;
    constructor(root: string);
    ensureRoot(): void;
    jobDir(jobId: string): string;
    workspaceDir(jobId: string): string;
    logPath(jobId: string): string;
    exitPath(jobId: string): string;
    ensureJobDirs(jobId: string): void;
    listJobIds(): string[];
    listMetas(): JobMeta[];
    readMeta(jobId: string): JobMeta | null;
    /** Absence is evidence; unreadable data must remain an inconclusive hold. */
    readMetaState(jobId: string): MetaRead;
    writeMeta(meta: JobMeta): boolean;
    /** Create-only so a wrapper-written outcome always wins. */
    recordExitCode(jobId: string, code: number): void;
    readExit(jobId: string): {
        code: number;
        at: number;
    } | null;
    removeJobDir(jobId: string): void;
    removeJobDirAsync(jobId: string): Promise<void>;
    jobDirMtime(jobId: string): number | null;
    fileStat(jobId: string, file: string): {
        size: number;
        mtimeMs: number;
    } | null;
    fileExistsState(jobId: string, file: string): "exists" | "absent" | "unreadable";
    gpuLockPath(index: number): string;
    createGpuLock(index: number, jobId: string): "created" | "exists";
    readGpuLockPath(lockPath: string): LockRead;
    readGpuLock(index: number): LockRead;
    removeGpuLockPath(lockPath: string): boolean;
    removeGpuLock(index: number): boolean;
    listGpuLockPaths(): string[];
}