{
  "name": "不规则舒尔特 · 专注力训练",
  "short_name": "不规则舒尔特",
  "description": "没有行列可扫的舒尔特方格：不规则拼贴 + 逐格柔和底色，按格数分档、按档位切片统计。",
  "start_url": "/",
  "scope": "/",
  "display": "standalone",
  "orientation": "portrait",
  "background_color": "#f5f7fa",
  "theme_color": "#2579b5",
  "lang": "zh-CN",
  "categories": ["health", "education", "productivity"],
  "icons": [
    { "src": "/icons/icon-192.png", "sizes": "192x192", "type": "image/png", "purpose": "any" },
    { "src": "/icons/icon-512.png", "sizes": "512x512", "type": "image/png", "purpose": "any" },
    { "src": "/icons/icon-512.png", "sizes": "512x512", "type": "image/png", "purpose": "maskable" }
  ]
}