Examine source code of Telefum24

{
  "name": "Telefum24",
  "version": "1.6.4",
  "description": "Расширение информирует о телефонных звонках",
  "icons": {
    "16": "images/16.png",
    "48": "images/48.png",
    "128": "images/128.png"
  },
  "permissions": [
    "tabs",
    "notifications"
  ],
  "background": {
    "scripts": [
      "background.js",
      "jquery-3.6.0.min.js",
      "popup.js"
    ]
  },
  "options_ui": {
    "open_in_tab": true,
    "page": "options.html"
  },
  "manifest_version": 2,
  "browser_action": {
    "default_title": "Telefum24",
    "default_popup": "popup.html"
  }
}