import * as plugins from '../dist_ts/plugins.js';
/**
 * Lifts every persisted sidebar layout to item refs, so conversations and resources can be
 * ordered as peers. This deliberately reverses the v18 and v24 exclusions: those removed
 * resources from the layout because the layout could only express conversations, and it now
 * expresses both.
 */
export declare class SessionLayoutItemRefsV30Migration {
    private readonly database;
    constructor(database: plugins.smartdata.SmartdataDb | undefined);
    run(): Promise<void>;
    /**
     * Active resources of one project in creation order, which is the order the sidebar derived.
     *
     * The collection is taken from the database rather than from the model, because this migration
     * runs before the controller has registered every model and must not depend on the resource
     * model having been initialised.
     */
    private projectResourceIds;
}