{
  "name": "SMS Center",
  "short_name": "SMS Center",
  "description": "Trang quản lý SMS Center — OTP relay tự build (ESP32-C3 + SIM7680C)",
  "start_url": "/admin",
  "scope": "/admin",
  "display": "standalone",
  "background_color": "#F5F7F6",
  "theme_color": "#0E8F86",
  "icons": [
    { "src": "/android-icon-36x36.png", "sizes": "36x36", "type": "image/png", "density": "0.75" },
    { "src": "/android-icon-48x48.png", "sizes": "48x48", "type": "image/png", "density": "1.0" },
    { "src": "/android-icon-72x72.png", "sizes": "72x72", "type": "image/png", "density": "1.5" },
    { "src": "/android-icon-96x96.png", "sizes": "96x96", "type": "image/png", "density": "2.0" },
    { "src": "/android-icon-144x144.png", "sizes": "144x144", "type": "image/png", "density": "3.0" },
    { "src": "/android-icon-192x192.png", "sizes": "192x192", "type": "image/png", "density": "4.0", "purpose": "any" },
    { "src": "/android-icon-192x192.png", "sizes": "192x192", "type": "image/png", "purpose": "maskable" }
  ]
}