/**
 * Lifecycle state machine for idle cleanup and graceful exit.
 */
export interface LifecycleLiveState {
    liveSessions: number;
    liveTabs: number;
    launchingContexts: number;
    stagedCreates: number;
}
type CleanupState = 'idle' | 'in_progress' | 'finished';
export declare class LifecycleController {
    private readonly cfg;
    private lastActivityMs;
    private cleanupFinishedMs;
    private cleanupState;
    private liveState;
    constructor(cfg: {
        idleCleanupTimeoutMs: number;
        idleExitTimeoutMs: number;
        now?: () => number;
    });
    private now;
    recordRequestStart(): void;
    recordRequestEnd(): void;
    recordInteractiveActivity(): void;
    syncLiveState(state: LifecycleLiveState): void;
    private hasLiveActivity;
    private hasLaunchingOrStagedWork;
    shouldRunCleanup(now?: number): boolean;
    shouldExit(now?: number): boolean;
    markCleanupStarted(_now?: number): void;
    markCleanupFinished(result: 'success' | 'aborted' | 'failed', now?: number): void;
    snapshot(): {
        cleanupState: CleanupState;
        liveState: LifecycleLiveState;
    };
}
export declare const lifecycleController: LifecycleController;
export {};
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