{
  "name": "聊天系统",
  "short_name": "聊天",
  "description": "基于 WebSocket 的全功能聊天系统（单聊/群聊/红包/朋友圈/通话）",
  "start_url": "/",
  "display": "standalone",
  "background_color": "#ffffff",
  "theme_color": "#3b82f6",
  "icons": [
    { "src": "data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'%3E%3Ctext y='.9em' font-size='90'%3E%F0%9F%92%AC%3C/text%3E%3C/svg%3E", "sizes": "192x192", "type": "image/svg+xml" }
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}