/**
 * Graceful shutdown handler for MAMA OS.
 *
 * Extracted from cli/commands/start.ts (Task 12 Part B).
 * Contains the ordered teardown logic, signal handlers,
 * uncaught error handlers, keep-alive interval, and force
 * exit timer.
 */
import type { AgentLoop } from '../../agent/index.js';
import type { SessionStore } from '../../gateways/session-store.js';
import type { Stoppable } from './server-start.js';
import type { PluginLoader } from '../../gateways/plugin-loader.js';
import type { MetricsStore } from '../../observability/metrics-store.js';
import type { CronScheduler, CronWorker, TokenKeepAlive } from '../../scheduler/index.js';
import type { HeartbeatScheduler } from '../../scheduler/heartbeat.js';
import type { SQLiteDatabase } from '../../sqlite.js';
export interface ShutdownDeps {
    metricsInterval: ReturnType<typeof setInterval> | null;
    healthWarningInterval: ReturnType<typeof setInterval> | null;
    scheduler: CronScheduler;
    cronWorker: CronWorker;
    heartbeatScheduler: HeartbeatScheduler;
    tokenKeepAlive: TokenKeepAlive;
    gateways: Stoppable[];
    pluginLoader: PluginLoader;
    agentLoop: AgentLoop;
    memoryAgentLoop: AgentLoop | null;
    sessionStore: SessionStore;
    db: SQLiteDatabase;
    metricsStore: MetricsStore | null;
    metricsCleanup: {
        stop: () => void;
    } | null;
}
/**
 * Install graceful shutdown handlers and keep-alive interval.
 *
 * Registers SIGINT, SIGTERM, SIGHUP, uncaughtException, and
 * unhandledRejection handlers, plus the keep-alive setInterval
 * that keeps the Node.js event loop active.
 */
export declare function installShutdownHandlers(deps: ShutdownDeps): void;
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