import type { ChromeState } from './contract.js';
export type ChipState = 'working' | 'blocked' | 'attention' | 'ready' | 'idle';
/** Derive the state chip from host signals: busy→working, error banner→blocked,
 *  action banner→attention, else ready (once loaded) / idle. An info banner does
 *  not block. An explicit interaction mode (setMode) overrides the chip — that
 *  precedence is applied by each target's chrome renderer, not here. */
export declare function deriveState(c: ChromeState): ChipState;
/** A fresh chrome record (the shape both hosts start from). */
export declare function initialChrome(): ChromeState;