/**
 * Summary Generator - Generates structured summaries for context compaction
 *
 * Creates structured summaries that preserve:
 * - User requests and intents
 * - Tool call history (deduplicated by file path)
 * - Key decisions and tasks
 * - Modified files list
 * - Usage statistics
 */
import type { AgentMessage } from '@earendil-works/pi-agent-core';
export interface ToolCallSummary {
    toolName: string;
    filePath?: string;
    operation: 'read' | 'write' | 'search' | 'command' | 'other';
    success: boolean;
    briefResult?: string;
    timestamp?: number;
}
export interface ConversationSummary {
    userRequests: string[];
    toolCalls: ToolCallSummary[];
    keyDecisions: string[];
    filesModified: string[];
    totalToolCalls: number;
    successfulToolCalls: number;
    failedToolCalls: number;
}
export interface SummaryGenerationOptions {
    maxUserRequests: number;
    maxToolCalls: number;
    deduplicateByFile: boolean;
    includeUsage: boolean;
}
/**
 * Generate structured summary from messages
 */
export declare function generateStructuredSummary(messages: AgentMessage[], options?: Partial<SummaryGenerationOptions>): ConversationSummary;
/**
 * Format structured summary as text for injection into context
 */
export declare function formatSummaryAsText(summary: ConversationSummary, includeUsage?: boolean): string;
/**
 * Generate compact summary message for context injection
 */
export declare function createSummaryMessage(summary: ConversationSummary): AgentMessage;