/**
 * Panel color-scheme preference, persisted in `localStorage`.
 *
 * `auto` is the default and needs no JavaScript: the token values injected by
 * {@link injectTokens} in `tokens.ts` react to `prefers-color-scheme` via
 * `@media`, so the panel follows whatever scheme its host requests — the OS
 * when standalone, or the embedding app's `color-scheme` when docked in the
 * Vite DevTools shell (the iframe inherits it). An explicit `light`/`dark`
 * preference pins the matching `.color-scheme-light` / `.color-scheme-dark`
 * class on the document root, overriding the media query.
 *
 * Storing and adopting the preference is the settings override module's
 * (`settings-override.ts`); this file is the DOM half, plus the synchronous
 * read the panel does before its first paint.
 */
import { type ColorSchemePreference } from './settings-override.js';
export type { ColorSchemePreference } from './settings-override.js';
/** Read the saved preference, defaulting to `auto`. */
export declare const readColorSchemePreference: () => ColorSchemePreference;
/**
 * Apply a preference to the document root. `light`/`dark` pin the matching
 * class; `auto` removes both and lets the `prefers-color-scheme` `@media` rule
 * in the injected tokens own the scheme (and live-update on OS changes).
 * Either way the resolved scheme is mirrored onto `.wa-dark`.
 */
export declare const applyColorScheme: (pref: ColorSchemePreference) => void;
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