/**
 * State-file readers for the monitor.
 *
 * Reads notification state and recovery metrics from the on-disk
 * state files produced by the dispatch subsystem.
 *
 * @module
 */
import type { NotificationState, RecoveryMetrics } from "./monitor-reader-types.ts";
/**
 * Scan the state directory for notification sidecar files (notifications-*.json)
 * and return a best-effort NotificationState. Returns null when no notification
 * state file exists (notifications subsystem may be disabled).
 *
 * The notification subsystem does not persist runtime state to disk by default,
 * so this reader returns null gracefully when no data is found.
 */
export declare function readNotificationState(stateDir: string): NotificationState | null;
/**
 * Parse the `recovery` key from the metrics-*.json sidecar file.
 * Returns a RecoveryMetrics object when the key is present and valid,
 * or null when absent, malformed, or the metrics file doesn't exist.
 *
 * The `recovery` key is optional in the persisted file — absent when no
 * recovery engine is wired or when ROLEBOX_METRICS is disabled.
 */
export declare function readRecoveryMetrics(stateDir: string): RecoveryMetrics | null;
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