Examine source code of U.Linkei (beta)

{
  "manifest_version": 3,
  "name": "U.Linkei (beta)",
  "version": "1.0",
  "description": "Gere e copie links curtos diretamente do Firefox",
  "author": "Tercio Oliveira",
  "homepage_url": "https://u.linkei.app.br",
  "permissions": [
    "activeTab",
    "clipboardWrite",
    "storage"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "host_permissions": [
    "https://u.linkei.app.br/*"
  ],
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "u.linkei@linkei.app.br",
      "strict_min_version": "109.0"
    }
  }
}