type PiEvents = 'session_start' | 'turn_end' | 'agent_start' | 'agent_end' | 'agent_settled' | 'session_shutdown';
interface PiLike {
    on: (event: PiEvents, handler: (event: any, ctx: any) => void | Promise<void>) => void;
    sendUserMessage: (content: string, options?: {
        deliverAs?: 'steer' | 'followUp';
    }) => void;
    sendMessage: (message: {
        customType: string;
        content: string;
        display?: boolean;
        details?: Record<string, unknown>;
    }, options?: {
        deliverAs?: 'steer' | 'followUp' | 'nextTurn';
        triggerTurn?: boolean;
    }) => void;
}
/** Register one current watcher. `start()` only wires up pi's event handlers —
 *  it calls no Pi action, so this is safe to run during extension factory
 *  execution, before Pi has bound its action methods (sendUserMessage /
 *  sendMessage throw until then). The watcher only starts polling and sending
 *  once its own `session_start` handler fires and arms it — the first event
 *  Pi emits once actions are bound. The returned disposer owns only this
 *  registration's generation. */
export declare function registerCanvasInboxWatcher(pi: PiLike): () => void;
export default registerCanvasInboxWatcher;