import { ConversationManager } from '../core/conversation.js';
import { KVState } from '../state/kv-state.js';
import { type AtRestPolicy } from '../runtime/at-rest-persistence.js';
export interface AgentSessionPaths {
    readonly sessionsDir: string;
    readonly stateDir: string;
}
/**
 * AgentSession, Isolated session context for a spawned agent.
 *
 * Each agent gets its own ConversationManager, KVState namespace,
 * and JSONL message log file.
 */
export declare class AgentSession {
    /** The agent's unique identifier. */
    readonly agentId: string;
    /** Guard to ensure session directory is only created once. */
    private dirCreated;
    /** Isolated conversation history for this agent. */
    readonly conversation: ConversationManager;
    /** KV state namespaced under agentId. */
    readonly kvState: KVState;
    /** Path to the agent's JSONL message log. */
    readonly sessionFile: string;
    /** The at-rest redaction + retention policy for this journal. */
    private readonly atRestPolicy;
    constructor(agentId: string, model: string, provider: string, paths: AgentSessionPaths, atRestPolicy?: AtRestPolicy);
    /**
     * Append a message record to the agent's JSONL log.
     * Each record is written as a single JSON line.
     */
    appendMessage(msg: Record<string, unknown>): void;
    /**
     * Clean up resources held by this session.
     * Flushes and disposes the KV state.
     */
    dispose(): Promise<void>;
    private _ensureSessionDir;
}
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