/**
 * @name premium/metrics
 * @description Metrics collector for the premium subsystem.
 *
 * Aggregates counts from the session manager, event store, stream broker,
 * webhook engine, and provider bridge into a single `PremiumMetricsSnapshot`.
 * Used by the health endpoint (`GET /premium/health.json`) and MCP monitoring
 * tools.
 *
 * @flow
 *   1. `remote/server.ts` → `GET /premium/health.json` → `getPremiumMetrics()`.
 *   2. `premium-tools.ts` → `sap_premium_metrics` → `getPremiumMetrics()`.
 *
 * @module premium/metrics
 */
import type { PremiumMetricsSnapshot } from './types.js';
/**
 * @name getPremiumMetrics
 * @description Collect a point-in-time metrics snapshot of the premium subsystem.
 *
 * @returns `PremiumMetricsSnapshot` with current counts and provider health.
 *
 * @usedBy `remote/server.ts` → `GET /premium/health.json`,
 *   `premium-tools.ts` → `sap_premium_metrics`
 */
export declare function getPremiumMetrics(): Promise<PremiumMetricsSnapshot>;
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