Examine source code of Kontur UI

{
  "manifest_version": 3,
  "name": "Kontur UI",
  "version": "1.2.0",
  "description": "Kontur UI design system developer tools",
  "homepage_url": "https://tech.skbkontur.ru/kontur-ui/",
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "action": {
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.figma.com/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_end"
    }
  ],
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "guides@kontur.ru",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}