export interface ProcessIdentity {
    readonly pid: number;
    readonly processStartIdentity: string;
    readonly bootIdentity: string | null;
    readonly executable: string;
    readonly hostname: string;
}
export type ProcessInspection = {
    readonly kind: "live";
    readonly identity: ProcessIdentity;
} | {
    readonly kind: "absent";
} | {
    readonly kind: "unknown";
    readonly diagnostic: string;
};
export interface ProcessIdentityInspector {
    current(): Promise<ProcessIdentity>;
    inspect(pid: number): Promise<ProcessInspection>;
}
export interface WorkflowLeaseOwnerV1 {
    readonly schema: 1;
    readonly kind: "supervisor" | "worker-session";
    readonly stage: "active" | "reserved";
    readonly generation: string;
    readonly workspaceId: string;
    readonly resourceId: string;
    readonly runId: string | null;
    readonly workerId: string | null;
    readonly attemptId: string | null;
    readonly workerAttemptGeneration: string | null;
    readonly supervisorGeneration: string | null;
    readonly sessionPath: string | null;
    readonly pid: number;
    readonly processStartIdentity: string;
    readonly bootIdentity: string | null;
    readonly executable: string;
    readonly hostname: string;
    readonly createdAt: string;
}
export interface WorkflowLeaseManagerOptions {
    readonly namespaceDirectory: string;
    readonly workspaceId: string;
    readonly inspector: ProcessIdentityInspector;
    readonly randomUUID?: () => string;
    readonly now?: () => Date;
    readonly guardWaitMs?: number;
}
export interface AcquireWorkerSessionInput {
    readonly sessionPath: string;
    readonly runId: string;
    readonly workerId: string;
    readonly attemptId: string;
    readonly workerAttemptGeneration: string;
    readonly supervisorGeneration: string;
    readonly processIdentity: ProcessIdentity;
}
export type WorkflowLeaseRefusalReason = "remote-owner" | "unverifiable-owner" | "corrupt-owner" | "lifecycle-busy" | "lifecycle-unverifiable";
export type WorkflowLeaseAcquireResult = {
    readonly kind: "acquired";
    readonly owner: WorkflowLeaseOwnerV1;
    readonly reclaimed?: {
        readonly owner: WorkflowLeaseOwnerV1;
        readonly quarantinePath: string;
    };
} | {
    readonly kind: "held";
    readonly owner: WorkflowLeaseOwnerV1;
} | {
    readonly kind: "refused";
    readonly reason: WorkflowLeaseRefusalReason;
    readonly diagnostic: string;
};
export type WorkflowLeaseReleaseResult = {
    readonly kind: "released";
} | {
    readonly kind: "not-owner";
    readonly owner?: WorkflowLeaseOwnerV1;
} | {
    readonly kind: "refused";
    readonly diagnostic: string;
};
export type WorkflowLeaseProjection = {
    readonly kind: "empty";
} | {
    readonly kind: "owned";
    readonly owner: WorkflowLeaseOwnerV1;
} | {
    readonly kind: "corrupt";
    readonly diagnostic: string;
};
export interface WorkerSessionLeaseDiagnostic {
    readonly resourceId: string;
    readonly path: string;
    readonly projection: WorkflowLeaseProjection;
}
export declare class WorkflowLeaseFenceError extends Error {
    constructor(message: string);
}
export declare class WorkflowLeaseManager {
    #private;
    constructor(options: WorkflowLeaseManagerOptions);
    acquireSupervisor(): Promise<WorkflowLeaseAcquireResult>;
    releaseSupervisor(generation: string): Promise<WorkflowLeaseReleaseResult>;
    withCurrentSupervisor<T>(generation: string, operation: () => Promise<T>): Promise<T>;
    inspectSupervisor(): Promise<WorkflowLeaseProjection>;
    acquireWorkerSession(input: AcquireWorkerSessionInput): Promise<WorkflowLeaseAcquireResult>;
    reserveWorkerSession(input: Omit<AcquireWorkerSessionInput, "processIdentity">): Promise<WorkflowLeaseAcquireResult>;
    activateWorkerSession(input: {
        readonly sessionPath: string;
        readonly generation: string;
        readonly supervisorGeneration: string;
        readonly workerAttemptGeneration: string;
        readonly processIdentity: ProcessIdentity;
    }): Promise<WorkflowLeaseOwnerV1>;
    releaseWorkerSession(input: {
        readonly sessionPath: string;
        readonly generation: string;
        readonly supervisorGeneration: string;
    }): Promise<WorkflowLeaseReleaseResult>;
    inspectWorkerSession(sessionPath: string): Promise<WorkflowLeaseProjection>;
    diagnoseWorkerSessionLeases(): Promise<readonly WorkerSessionLeaseDiagnostic[]>;
}
export declare function parseWorkflowLeaseOwnerV1(value: unknown): WorkflowLeaseOwnerV1;
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