Examine source code of Contatei WhatsApp

{
  "manifest_version": 3,
  "name": "Contatei - WhatsApp",
  "version": "1.0.4",
  "description": "Saudação automática, mensagem de ausência e status de pedidos para WhatsApp Web",
  "browser_specific_settings": {
    "gecko": {
      "id": "contatei-respostas@contatei.com.br",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "personalCommunications"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://web.whatsapp.com/*",
    "https://contatei.com.br/*"
  ],
  "background": {
    "scripts": [
      "shared/storage-cleanup.js",
      "shared/api-debug.js",
      "shared/auth.js",
      "shared/order-queue.js",
      "background/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://web.whatsapp.com/*"
      ],
      "js": [
        "content/content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "lib/wppconnect-wa.js",
        "shared/storage-cleanup.js",
        "injected/app.js"
      ],
      "matches": [
        "https://web.whatsapp.com/*"
      ]
    }
  ],
  "action": {
    "default_popup": "popup/popup.html",
    "default_title": "Contatei - Configurações",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}