純瀏覽器端互動 Demo，模擬遊戲官方後台發送訊息、多位玩家訂閱後同時收到通知的完整發佈訂閱流程。用來直觀展示 Pub/Sub 解耦、非同步、多重接收的核心概念。A pure browser-side interactive demo simulating a game publisher sending messages and multiple subscribers receiving them simultaneously. Visually demonstrates Pub/Sub's core concepts: decoupling, async processing, and multi-subscriber delivery.
Publisher 在控制台輸入限時活動訊息Publisher inputs a limited-time event message in the consoleAlice 訂閱後即時收到通知Alice receives the notification instantly after subscribing
