/**
 * Task/plan pane presence — instant show/hide (no slide animation).
 *
 * Animation was removed: enter/exit slides felt laggy on pane open/close.
 */
import type { PaneAnimState } from "./plan-pane-anim.js";
/**
 * Drive mounted state from a boolean `open` request.
 * progress is always 0 or 1 — no intermediate frames.
 */
export declare function usePanePresence(open: boolean): PaneAnimState;