/**
 * apns/client.ts — Apple Push Notification service (APNs) client for AIBroker.
 *
 * Sends push notifications to PAILot devices when no MQTT clients are connected.
 * Device tokens are stored in ~/.aibroker/apns-tokens.json.
 *
 * Configuration (loaded from ~/.aibroker/env or process.env):
 *   APNS_KEY_PATH  — path to the .p8 auth key file
 *   APNS_KEY_ID    — 10-character key ID (e.g., C9Z39FRQ2N)
 *   APNS_TEAM_ID   — 10-character Apple Team ID (e.g., 7KU642K5ZL)
 *   APNS_PRODUCTION — set to "1" or "true" to use production APNs host
 */
/**
 * Register a device token. Silently ignores duplicates.
 */
export declare function registerToken(token: string): void;
/**
 * Remove a device token (e.g., on InvalidToken APNs error).
 */
export declare function removeToken(token: string): void;
/**
 * Returns all registered device tokens.
 */
export declare function getTokens(): string[];
/** Reset badge counter — call when the app connects via MQTT. */
export declare function resetBadge(): void;
export interface PushPayload {
    title: string;
    body: string;
    badge?: number;
    data?: Record<string, unknown>;
}
/**
 * Send a push notification to a single device token.
 * Returns true on success, false on failure.
 */
export declare function sendPushToToken(token: string, payload: PushPayload): Promise<boolean>;
/**
 * Send a push notification to all registered device tokens.
 * Returns the number of tokens that succeeded.
 */
export declare function sendPush(title: string, body: string, data?: Record<string, unknown>, badge?: number): Promise<number>;
/**
 * Send a SILENT background push that clears the iOS home-screen badge.
 * resetBadge() alone only resets the in-memory counter — iOS keeps displaying
 * whatever number the last push set until a new push tells it otherwise. A
 * SilentNotification with badge: 0 is delivered as a background push (no alert,
 * no sound) and just repaints the icon. Call on app-connect (WS/MQTT) — the app
 * being online means the user is reading, so any pending count is stale.
 */
export declare function sendBadgeClear(): Promise<void>;
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