export interface VendoOverlayController {
    /** Whether the overlay is currently open. */
    isOpen: boolean;
    open(): void;
    close(): void;
    toggle(): void;
    /** Discard the overlay's current conversation and start a fresh thread
     *  (ENG-221) — the headless twin of the panel's new-conversation button. */
    newConversation(): void;
    /** Spread onto `<VendoOverlay />` to hand it this controller's state. */
    overlayProps: {
        open: boolean;
        onOpenChange(open: boolean): void;
        conversationKey: number;
    };
}
/**
 * Programmatic open/close for `<VendoOverlay />` (ENG-220): a tiny controlled-
 * state helper so hosts can wire their own triggers (keyboard shortcuts, nav
 * buttons) without DOM-poking the launcher.
 *
 * ```tsx
 * const overlay = useVendoOverlay();
 * // overlay.toggle() from your own ⌘K handler…
 * return <VendoOverlay {...overlay.overlayProps} />;
 * ```
 */
export declare function useVendoOverlay(options?: {
    defaultOpen?: boolean;
}): VendoOverlayController;