export type RuntimeExitMarker = {
    kind: string;
    code: number | null;
    signal?: string;
    message?: string;
    recordedAt: string;
};
export type RuntimeLifecycleState = {
    runId: string;
    pid: number;
    port: number;
    startedAt: string;
    buildVersion?: string;
    buildMode?: string;
    exit?: RuntimeExitMarker;
};
export type UngracefulInference = {
    shouldReport: boolean;
    reason: string;
};
export declare function resolveRuntimeLifecyclePath(port: number, routeCodexHomeDir?: string): string;
export declare function safeReadRuntimeLifecycle(filePath: string): RuntimeLifecycleState | null;
export declare function safeWriteRuntimeLifecycle(filePath: string, state: RuntimeLifecycleState): Promise<boolean>;
export declare function safeMarkRuntimeExit(filePath: string, marker: RuntimeExitMarker): Promise<boolean>;
export declare function isPidAliveForForensics(pid: number): boolean;
export declare function inferUngracefulPreviousExit(args: {
    previous: RuntimeLifecycleState | null;
    currentPid: number;
    isPidAlive?: (pid: number) => boolean;
}): UngracefulInference;