import { type Theme } from '../theme.js';
/**
 * Subscribes to the module-scoped active theme so a render reads the
 * current `theme` snapshot. Used by the App shell to force a re-render
 * when `setActiveTheme()` mutates the global theme — child components
 * read `theme` directly via destructuring, so the parent re-render
 * propagates the new palette into the whole tree.
 *
 * The hook itself returns the live `theme` reference; callers don't
 * typically need to use it (they can keep reading `theme` directly),
 * but exposing it lets test code and stat panels introspect the active
 * palette without re-implementing the listener.
 */
export declare function useActiveTheme(): Theme;
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