/**
 * [WHO]: scanAllSessions, entriesToSessionMeta, formatTranscriptForFacets, formatTranscriptWithSummarization, load/saveSessionMeta, load/saveFacets
 * [FROM]: Depends on node:fs/promises, core/session/session-manager, core/lib/ai types, core/lib/agent-core types, ./types
 * [TO]: Consumed by ./insights-engine, ./index
 * [HERE]: extensions/builtin/insights/session-scanner.ts - session JSONL scanning, transcript formatting, meta/facets cache
 *
 * Session scanner — adapts Catui session entries to CC's SessionMeta format.
 *
 * Port of Claude Code src/commands/insights.ts data collection functions:
 * - extractToolStats → entriesToToolStats
 * - logToSessionMeta → entriesToSessionMeta
 * - formatTranscriptForFacets → formatTranscriptForFacets
 * - formatTranscriptWithSummarization → formatTranscriptWithSummarization
 * - scanAllSessions → scanAllSessions
 * - loadCachedSessionMeta / saveSessionMeta
 * - loadCachedFacets / saveFacets
 */
import type { SessionEntry } from "../../../core/session/session-manager.js";
import type { SessionMeta, SessionFacets, LiteSessionInfo } from "./types.js";
export declare function entriesToSessionMeta(entries: SessionEntry[], sessionId: string, projectPath: string): SessionMeta;
export declare function formatTranscriptForFacets(entries: SessionEntry[]): string;
export declare function formatTranscriptWithSummarization(entries: SessionEntry[], completeFn: (systemPrompt: string, userMessage: string) => Promise<string | undefined>): Promise<string>;
export declare function scanAllSessions(sessionsDir: string): Promise<LiteSessionInfo[]>;
export declare function loadCachedSessionMeta(sessionId: string, agentDir: string): Promise<SessionMeta | null>;
export declare function saveSessionMeta(meta: SessionMeta, agentDir: string): Promise<void>;
export declare function loadCachedFacets(sessionId: string, agentDir: string): Promise<SessionFacets | null>;
export declare function saveFacets(facets: SessionFacets, agentDir: string): Promise<void>;