import type { ExtensionAPI, ExtensionHandler, SessionStartEvent, SessionShutdownEvent, BeforeAgentStartEvent, BeforeAgentStartEventResult, InputEvent, InputEventResult, TurnEndEvent, RegisteredCommand } from "@earendil-works/pi-coding-agent";
/**
 * Sole isolation point for all Pi SDK calls.
 * No other Core file may import ExtensionAPI directly — pass PiAdapter instead.
 * This makes the Pi boundary explicit and allows tests to mock the adapter.
 *
 * Note: resources_discover is not wrapped here because its event/result types
 * are not exported from the SDK's main entry point. The gatekeeper extension
 * (a CS-specific extension being removed in Phase 5) calls pi.on directly.
 */
export declare class PiAdapter {
    private readonly pi;
    constructor(pi: ExtensionAPI);
    onSessionStart(handler: ExtensionHandler<SessionStartEvent>): void;
    onSessionShutdown(handler: ExtensionHandler<SessionShutdownEvent>): void;
    onBeforeAgentStart(handler: ExtensionHandler<BeforeAgentStartEvent, BeforeAgentStartEventResult>): void;
    onInput(handler: ExtensionHandler<InputEvent, InputEventResult>): void;
    onTurnEnd(handler: ExtensionHandler<TurnEndEvent>): void;
    registerCommand(name: string, options: Omit<RegisteredCommand, "name" | "sourceInfo">): void;
    sendUserMessage(content: string): void;
}
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