Examine source code of WA Bulk Master

{
  "manifest_version": 2,
  "name": "Cognieos WA Bulk Master",
  "version": "1.9",
  "browser_specific_settings": {
    "gecko": {
      "id": "digimese-wa-bulk@digimese.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "tabs",
    "storage",
    "clipboardWrite",
    "clipboardRead",
    "<all_urls>",
    "http://localhost/*",
    "http://127.0.0.1/*",
    "https://cogieos-bulk-marketing-tool.onrender.com/*"
  ],
  "browser_action": {
    "default_title": "Open Cognieos Dashboard"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://web.whatsapp.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'"
}