import type { LayoutTree, PanelRegistry } from './types.js';
/**
 * Close a panel only when its descriptor permits user closure.
 *
 * Missing descriptors and an omitted `closable` capability retain the historic
 * close behavior. Only an explicit `closable:false` blocks the operation.
 */
export declare function closePanelForUser(tree: LayoutTree, panelId: string, registry: PanelRegistry): LayoutTree;
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