/**
 * Tool Result Delegator
 *
 * Intercepts large tool results via the AfterToolHook mechanism,
 * stores the full result for optional recall, and replaces it
 * with a compact summary to conserve context tokens.
 */
import type { LLMProvider } from '../providers/types.js';
import type { AfterToolHook } from '../hooks/types.js';
import type { DelegationConfig, DelegationEvent } from './delegation-types.js';
import { DelegatedResultStore } from './delegated-result-store.js';
/**
 * Options for creating a ToolResultDelegator.
 */
export interface ToolResultDelegatorOptions {
    /** LLM provider for summarization (small/medium tier preferred) */
    provider: LLMProvider;
    /** Delegation configuration (merged with defaults) */
    config?: Partial<DelegationConfig>;
    /** Event callback for delegation lifecycle events */
    onEvent?: (event: DelegationEvent) => void;
}
/**
 * Core class that creates an AfterToolHook for auto-delegating large tool results.
 */
export declare class ToolResultDelegator {
    private readonly store;
    private readonly config;
    private readonly provider;
    private readonly onEvent?;
    constructor(options: ToolResultDelegatorOptions);
    /**
     * Returns an AfterToolHook to register with HooksManager.
     */
    createHook(): AfterToolHook;
    /**
     * Perform the actual delegation (async path).
     */
    private delegateResult;
    /**
     * Access the store (needed by recall_full_result tool).
     */
    getStore(): DelegatedResultStore;
    /**
     * Get the resolved config for a specific tool.
     */
    private getToolConfig;
    /**
     * Extractive summarization: first/last lines + prioritized structural markers.
     * No LLM cost, fast, preserves actual code signatures.
     */
    private summarizeExtractive;
    /**
     * LLM-based summarization using the provider.
     * Returns null if the LLM call fails.
     */
    private summarizeLLM;
}
/**
 * System prompt addition when delegation is enabled.
 * Append to the agent's system prompt.
 */
export declare const DELEGATION_SYSTEM_PROMPT: string;