import { type TuiSurface } from "../../tui/surfaces/surface-schema.js";
import { type AnyKoiTool } from "./common.js";
export declare function publishSurfaceForSession(sessionKey: string, surface: TuiSurface): void;
/** Reload persisted surfaces into the (in-memory) canvas registry at boot. */
export declare function restoreSurfacesFromDisk(): number;
export declare function createSurfaceTool(): AnyKoiTool;