/**
 * Observability middleware — always-on instrumentation for agent runs.
 *
 * Unlike benchmark middleware (opt-in via --benchmark), this runs on every
 * wizard session. It feeds Sentry breadcrumbs, structured logs, and
 * lightweight timing data into the observability module.
 *
 * Does NOT duplicate benchmark work — no per-token accounting or JSON export.
 * Focuses on: breadcrumbs, phase timing, tool call tracking, error context.
 */
import type { Middleware } from './types';
export declare function createObservabilityMiddleware(): Middleware;
