Examine source code of IO Proxy

{
  "manifest_version": 3,
  "name": "IO Proxy",
  "version": "1.0.4",
  "description": "Управление своими прокси и чёрными/белыми списками",
  "author": "IO",
  "browser_specific_settings": {
    "gecko": {
      "id": "sei.koop.dev@gmail.com",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "128.0"
    }
  },
  "permissions": [
    "tabs",
    "proxy",
    "storage",
    "menus",
    "privacy",
    "contextMenus",
    "unlimitedStorage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "IO Proxy"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "icons": {
    "128": "icon.png"
  }
}