/**
 * PreCompact Handler for MAMA OS Standalone
 *
 * Ported from claude-code-plugin/scripts/precompact-hook.js.
 * Uses executeTool callback to interact with MAMA memory (mama_search)
 * without importing mama-core directly.
 */
import type { GatewayToolExecutionContext } from './types.js';
export interface CompactionResult {
    unsavedDecisions: string[];
    compactionPrompt: string;
    warningMessage: string;
}
export interface PreCompactHandlerConfig {
    enabled: boolean;
    maxDecisionsToDetect?: number;
}
type ExecuteToolFn = (name: string, input: Record<string, unknown>, executionContext?: GatewayToolExecutionContext | null) => Promise<unknown>;
export declare class PreCompactHandler {
    private readonly executeTool;
    private readonly config;
    constructor(executeTool: ExecuteToolFn, config: PreCompactHandlerConfig);
    process(conversationHistory: string[], executionContext?: GatewayToolExecutionContext | null): Promise<CompactionResult>;
    private extractDecisionCandidates;
    private getSavedTopics;
    private filterUnsaved;
    private buildWarningMessage;
    /**
     * 7-section compaction prompt:
     * 1. User Requests  2. Final Goal  3. Work Completed  4. Remaining Tasks
     * 5. Active Working Context  6. Explicit Constraints  7. Agent Verification State
     */
    private buildCompactionPrompt;
}
export {};
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