/**
 * [WHO]: extractFreeRecap(), formatFreeRecap(), FreeRecap — zero-LLM deterministic recap from session entries
 * [FROM]: Depends on core/session/session-manager (SessionEntry types), @catui/ai (UserMessage, AssistantMessage)
 * [TO]: Consumed by extensions/builtin/recap/index.ts (Free path), recap-synthesizer (shared walker for activity counts)
 * [HERE]: extensions/builtin/recap/recap-extractor.ts - heuristic Free recap: longest user message as goal, tool/file frequency as facts, question detection as next-step
 */
import type { SessionEntry } from "../../../core/session/session-manager.js";
export interface FreeRecap {
    goal: string;
    facts: string;
    next: string;
}
export interface ExtractedActivity {
    userTexts: string[];
    tools: string[];
    files: string[];
}
/**
 * Walk session entries once and collect everything the Free extractor and the
 * activity guard need. Exported so the Smart synthesizer can reuse the same
 * walk (avoids two passes + drift between Free and Smart context views).
 */
export declare function walkSessionActivity(entries: SessionEntry[]): ExtractedActivity;
/**
 * Extract a deterministic recap from session entries. No LLM calls. Returns
 * structured FreeRecap; pair with formatFreeRecap() to get a renderable string.
 */
export declare function extractFreeRecap(entries: SessionEntry[]): FreeRecap;
/**
 * Render FreeRecap as a three-clause string that matches the shape of Smart's
 * output, so the same renderer + side-by-side comparison work without
 * special-casing.
 */
export declare function formatFreeRecap(recap: FreeRecap): string;