Examine source code of Sysnova Launcher

{
  "manifest_version": 3,
  "name": "Sysnova Launcher",
  "version": "2.0.0",
  "description": "Extensão para assinaturas com Certificados digitais e edição de documentos.",
  "permissions": [
    "nativeMessaging"
  ],
  "host_permissions": [
    "https://ecoplan.sysnova.com.br/*",
    "http://ecoplan.sysnova.com.br/*",
    "https://ecoplan2.sysnova.com.br/*",
    "http://ecoplan2.sysnova.com.br/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://ecoplan.sysnova.com.br/*/HomeOperador.aspx",
        "http://ecoplan.sysnova.com.br/*/HomeOperador.aspx",
        "https://ecoplan2.sysnova.com.br/*/HomeOperador.aspx",
        "http://ecoplan2.sysnova.com.br/*/HomeOperador.aspx"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "icons": {
    "16": "sysnova_launcher016.png",
    "48": "sysnova_launcher048.png",
    "128": "sysnova_launcher128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "sysnova-launcher@sysnova.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}