Examine source code of Google Discovery

{
  "manifest_version": 3,
  "name": "GD Notícias",
  "description": "A extensão oficial do GD! Acompanhe as últimas notícias do Google Discovery direto do seu navegador.",
  "version": "1.4",
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_popup": "src/popup/popup.html",
    "default_title": "GD Notícias",
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "options_ui": {
    "page": "src/options/options.html",
    "open_in_tab": true
  },
  "permissions": [
    "storage",
    "alarms",
    "notifications"
  ],
  "host_permissions": [
    "https://gd.eurisko.com.br/*"
  ],
  "background": {
    "scripts": [
      "src/background/background.js"
    ],
    "type": "module"
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+G",
        "mac": "Command+Shift+G"
      },
      "description": "Abrir o GD Notícias"
    },
    "refresh-feed": {
      "suggested_key": {
        "default": "Ctrl+Shift+U"
      },
      "description": "Verificar novas notícias em segundo plano"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{01407680-86e4-47c8-b14d-178408edc9ac}",
      "strict_min_version": "112.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "112.0"
    }
  }
}