export type ShutdownCallback = () => void;
/**
 * Register signal handlers for graceful shutdown.
 * Call once at CLI startup. Safe to call multiple times (idempotent).
 */
export declare function registerShutdownHandlers(): void;
/**
 * Set the active build root so cleanup knows which directory to clean.
 */
export declare function setActiveRoot(root: string): void;
/**
 * Clear the active root after a successful build completes.
 */
export declare function clearActiveRoot(): void;
/**
 * Register an additional cleanup callback to run during shutdown.
 */
export declare function onShutdown(callback: ShutdownCallback): void;
/**
 * Run all cleanup actions. Called by signal handlers.
 * Also exported for testing.
 */
export declare function performCleanup(): void;
/**
 * Reset all state. Used in tests only.
 */
export declare function resetLifecycle(): void;
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