{
  "short_name": "树洞",
  "name": "P大树洞（非官方）",
  "icons": [
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      "sizes": "256x256",
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      "sizes": "192x192",
      "type": "image/png"
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  ],
  "start_url": "/?app",
  "display": "standalone",
  "theme_color": "#112244",
  "background_color": "#112244"
}