/**
 * session_start Tool
 *
 * Initialize session, detect agent, load institutional context.
 * Returns threads and recent decisions. Scars surface via recall on demand.
 *
 * Performance target: <750ms
 *
 * Removed scar/wins queries from start pipeline.
 * Scars load on-demand via recall(). Wins available via search/log.
 * loadLastSession and loadRecentDecisions run in parallel.
 * createSessionRecord is fire-and-forget.
 */
import type { SessionStartParams, SessionStartResult, Project } from "../types/index.js";
/**
 * Execute session_start tool
 *
 * Returns detailed performance breakdown for test harness validation.
 * Key metrics: network_calls_made, fully_local, breakdown per component.
 *
 * Guards against overwriting existing active sessions.
 * Returns existing session if active-session.json exists (idempotent).
 * Pass force=true to override.
 */
export declare function sessionStart(params: SessionStartParams): Promise<SessionStartResult>;
/**
 * session_refresh Tool
 *
 * Re-surfaces institutional context for the current active session
 * without creating a new session ID. Same lean pipeline as session_start
 * (last session, decisions, threads) but skips session creation.
 *
 * Scars/wins removed — load on-demand via recall/search.
 *
 * Use when: mid-session context refresh after compaction, long gaps, or
 * when you need to remember where you left off.
 */
export interface SessionRefreshParams {
    project?: Project;
}
export declare function sessionRefresh(params: SessionRefreshParams): Promise<SessionStartResult>;
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