/**
 * Force a Preact re-render when ChatStore signals change.
 *
 * Reading `.value` in JSX only auto-subscribes when `@preact/signals` has
 * patched Preact before the first render. The lazy chat bundle loads store
 * and UI in one chunk, but an explicit effect is the reliable backstop —
 * especially for `messages`, where a missed subscription leaves the list
 * stale while MessageInput clears (local state) on send.
 */
import type { ChatStore } from "../../store/chat-store";
/** Every signal the chat widget UI reads — keep in sync when adding readers. */
export declare function useChatStoreSignals(store: ChatStore): void;