{    "name": "demo3br",   "short_name": "demo3br",  "start_url": "/", "display": "standalone",  "background_color": "#000000",    "theme_color":"#000000",  "description": "",    "icons": [      {         "src": "https://resource.ouro888.win/picture/manifest/2026/6/e69d0a587980429b9ab6e90e2ed73a12.ico",           "sizes": "512x512",           "type": "image/png",          "purpose": "any maskable"     } ]}