import type { AgentMessage } from '../llm/types/agent-message.js';
export interface AgentMicroCompactResult {
    messages: AgentMessage[];
    didCompact: boolean;
    clearedCount: number;
    savedTokens: number;
}
export interface AgentMicroCompactOptions {
    keepRecentToolResults?: number;
    tokenThreshold?: number;
    force?: boolean;
}
/**
 * L1 micro-compact for AgentMessage[] — strip old tool results without LLM.
 */
export declare function microCompactAgentMessages(messages: AgentMessage[], options?: AgentMicroCompactOptions): AgentMicroCompactResult;
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