import * as plugins from '../dist_ts/plugins.js';
/**
 * Merges the per-project sidebar layouts into one controller-wide layout, so conversations and
 * resources of every project can be ordered in a single list.
 *
 * The lift is one-way and recognised by a positive signal: the merged document carries the
 * required `scope: 'controller'` key, which no per-project document ever had. A document that
 * already carries it is the merge target rather than another source, which makes a resumed run
 * after a crash append the remaining sources instead of starting over.
 */
export declare class ControllerLayoutV32Migration {
    private readonly database;
    constructor(database: plugins.smartdata.SmartdataDb | undefined);
    run(): Promise<void>;
    /**
     * Registered project ids in registration order.
     *
     * The collection is read from the database rather than through the model, because this
     * migration runs before the controller has registered every model.
     */
    private registeredProjectIds;
}