import { createAgentSessionServices, createAgentSessionFromServices, createAgentSessionRuntime, SessionManager, VERSION } from '@earendil-works/pi-coding-agent';
export { createAgentSessionServices, createAgentSessionFromServices, createAgentSessionRuntime, SessionManager, VERSION, };
/**
 * The minimal slice of the pi SDK the broker needs. Both the real package and the
 * T11 `fake-engine` fixture satisfy this shape, so the broker can be driven by
 * either via the `CRTR_BROKER_ENGINE` seam below.
 *
 * C3 (viewer-reuse scout `mq5thyli`): the broker drives the SERVICES path
 * (`createAgentSessionServices` → `createAgentSessionFromServices`), NOT plain
 * `createAgentSession`. Only the services path runs `registerProvider` (extension
 * model-providers) + `applyExtensionFlagValues`, so a node whose model comes from
 * a custom-provider extension actually gets a model. Mirrors pi `main.js`.
 */
export interface BrokerEngine {
    createAgentSessionServices: typeof createAgentSessionServices;
    createAgentSessionFromServices: typeof createAgentSessionFromServices;
    /**
     * The session-replacement runtime factory (T3 new_session/switch_session/fork).
     * OPTIONAL: the real SDK (0.78.1) exposes it, so production gets full session
     * replacement; the `fake-engine` test fixture does NOT provide it, so the
     * broker degrades those three ops to an `error{engine_error}` reply rather than
     * failing engine validation. Everything else works on both.
     */
    createAgentSessionRuntime?: typeof createAgentSessionRuntime;
    SessionManager: typeof SessionManager;
    VERSION: string;
}
/**
 * Resolve the broker's engine module. Defaults to the real SDK; honors the
 * `CRTR_BROKER_ENGINE` env var (T11 test seam) so a lifecycle test can point the
 * broker at `fixtures/fake-engine.ts` without touching production code. This is the
 * sole dynamic-import indirection point — keep all engine resolution flowing
 * through here so the seam stays a single, auditable swap.
 */
export declare function loadBrokerEngine(): Promise<BrokerEngine>;
export declare function assertEngineVersion(engineVersion?: string): void;