import type { StoragePlugin, TokenEconomics, SessionChain } from './types.js';
import type { EventTracker } from './events.js';
export declare class SessionManager {
    private storage;
    private events?;
    constructor(storage: StoragePlugin, events?: EventTracker | undefined);
    saveSnapshot(sessionId: string, _stats: TokenEconomics): void;
    restoreSnapshot(sessionId: string): {
        snapshot: Record<string, unknown>;
        condensed: boolean;
    } | null;
    getSnapshotMaxBytes(): number;
    createChainEntry(sessionId: string, projectPath: string, parentSession: string | null, reason: SessionChain['handoff_reason']): SessionChain;
    getLatestChainEntry(projectPath: string): SessionChain | null;
    getChainHistory(sessionId: string, limit?: number): SessionChain[];
    updateChainEntry(sessionId: string, update: {
        summary?: string;
        token_estimate?: number;
    }): void;
    generateContinuationPrompt(sessionId: string): string;
    private rowToChain;
    private extractCategories;
    private trimToFit;
    private dropByPriority;
    private truncateP1;
    private buildRecord;
}
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