/** Opt-in, validated layout persistence. */
import type { ViewMode } from "./types";
export interface PersistedLayout {
    positions: Record<string, {
        x: number;
        y: number;
    }>;
    zoom: number;
    pan: {
        x: number;
        y: number;
    };
}
export declare function layoutStorageKey(storageKey: string, view: ViewMode): string;
export declare function saveLayout(storageKey: string, layout: PersistedLayout): void;
export declare function loadLayout(storageKey: string): PersistedLayout | undefined;
export declare function clearLayout(storageKey: string): void;
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