import React from 'react';
/**
 * Brand Showcase Shell Page.
 *
 * @description
 * A complete layout assembly including the Sidebar, Main Content area (ShowcaseContent),
 * and the floating AI Assistant. Auth state is consumed from `AuthContext` — no props required.
 *
 * @ai-rules
 * 1. Use this page as the reference for the `xertica` (IDXERTICA-compliant) brand theme — it defaults `ShowcaseContent` into that theme on mount.
 * 2. It relies on `useLayout` context to synchronize the expansive states of the Sidebar and Assistant.
 */
export declare function ShowcasePage(): React.JSX.Element;