export type { AncestorInfo } from "./ancestorWalk";
export { findHarnessAncestorPid } from "./ancestorWalk";
export declare const SESSION_PID_MARKER_ENV_VAR = "AGENT_ENABLE_SESSION_PID_MARKERS";
export declare const SESSION_PID_MARKER_ENV_VAR_DEPRECATED = "BABYSITTER_ENABLE_SESSION_PID_MARKERS";
export declare function isSessionPidMarkerEnabled(): boolean;
export declare function __resetCacheForTests(): void;
export declare function __setAncestorResolverForTests(fn: ((processNames: string[]) => import("./ancestorWalk").AncestorInfo | undefined) | undefined): void;
export declare function getSessionMarkerPath(harness: string, ancestorPid: number): string;
export declare function hasSessionMarkerCandidate(harness: string): boolean;
export declare function writeSessionMarker(harness: string, sessionId: string): string | undefined;
export declare function cleanupDeadSessionMarkers(): number;
export declare function readSessionMarker(harness: string): string | undefined;
export type SessionResolutionSource = "pid-marker" | "env-var" | "explicit" | "none";
export interface SessionMarkerDetails {
    sessionId: string;
    ancestorPid: number;
    ancestorAlive: boolean;
}
export interface SessionResolutionDetails {
    sessionId?: string;
    resolvedFrom: SessionResolutionSource;
    ancestorPid: number | null;
    ancestorAlive: boolean | null;
}
export declare function readSessionMarkerDetails(harness: string): SessionMarkerDetails | undefined;
export declare function resolveSessionIdWithMarker(harness: string, parsed: {
    sessionId?: string;
}, harnessEnvVars?: readonly string[]): string | undefined;
export declare function resolveSessionIdWithMarkerDetailed(harness: string, parsed: {
    sessionId?: string;
}, harnessEnvVars?: readonly string[]): SessionResolutionDetails;
export declare function deriveProcessNames(harness: string): string[];
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