Examine source code of surfly protocol

{
  "manifest_version": 3,
  "name": "surfly protocol",
  "description": "Emulates support of `surfly://` protocol in browsers",
  "version": "0.0.5",
  "icons": {
    "64": "icons/icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1c13917a-fa3b-4f7b-81b2-77d917e2c389}",
      "strict_min_version": "109.0"
    }
  },
  "permissions": [
    "webNavigation",
    "tabs"
  ],
  "host_permissions": [
    "*://*/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}