isOffline (offlineState.js)

Enterprise-Grade Offline State Manager Features: - Multi-signal detection (browser API + server ping + Network Info API) - Stability buffer (prevents flapping between online/offline) - Adaptive polling intervals - Exponential backoff with jitter

/**
 * Enterprise-Grade Offline State Manager
 *
 * Features:
 * - Multi-signal detection (browser API + server ping + Network Info API)
 * - Stability buffer (prevents flapping between online/offline)
 * - Adaptive polling intervals
 * - Exponential backoff with jitter
 * - Connection quality tracking
 * - Tab visibility awareness
 * - Cross-tab synchronization via BroadcastChannel
 * - Captive portal detection
 *
 * @module utils/offline/offlineState
 */

import { logger } from "../logger";

const log = logger.create("OfflineState");

// ============================================================================
// CONFIGURATION
// ============================================================================

const CONFIG = {
	// Ping settings
	PING_URL: "/api/method/pos_next.api.ping",


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