/**
 * Copilot Executor — A2A ↔ GitHub Copilot SDK Bridge
 *
 * Orchestrates Copilot SDK sessions to handle A2A task requests.
 * Supports streaming responses, MCP server integration, multi-turn
 * conversations, system prompts, and context building.
 */
import type { AgentExecutor, RequestContext, ExecutionEventBus } from "@a2a-js/sdk/server";
import type { AgentConfig } from "../config/types.js";
import type { EventTransport, EventTransportFn } from "@a2a-wrapper/core";
export declare class CopilotExecutor implements AgentExecutor {
    private readonly config;
    private client;
    private sessionManager;
    private mcpHooks;
    private initialized;
    /** Optional custom event transport supplied via programmatic API. */
    customTransport?: EventTransport | EventTransportFn;
    constructor(config: Required<AgentConfig>);
    initialize(): Promise<void>;
    shutdown(): Promise<void>;
    /**
     * Build (or refresh) the domain context file by sending a prompt via Copilot SDK.
     * Returns the assistant's response text.
     */
    buildContext(prompt?: string): Promise<string>;
    /**
     * Read the context file from the workspace directory.
     * Returns the file content or null if it doesn't exist.
     */
    getContextContent(): Promise<string | null>;
    execute(ctx: RequestContext, bus: ExecutionEventBus): Promise<void>;
    cancelTask(taskId: string, bus: ExecutionEventBus): Promise<void>;
    /**
     * Translate a wrapper-agnostic {@link SynthesizedMcpDescriptor} into the
     * stdio MCP entry shape consumed by the Copilot SDK / this wrapper's
     * resolved `mcp` map. Used after {@link bootstrapSubAgents} returns the
     * canonical descriptor so the entry can be merged under
     * `descriptor.key` (the reserved `a2a-subagents` key).
     */
    private toCopilotMcpEntry;
    /**
     * Extract trace context propagated by the orchestrator via A2A metadata.
     *
     * The orchestrator injects { trace_id, parent_agent_id, propagated_metadata }
     * into the A2A request configuration dict. The A2A JS SDK exposes these
     * through the RequestContext or the Task object.
     */
    private extractTraceContext;
}
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