Examine source code of NNHS Bus App

{
  "name": "Bus App",
  "description": "NNHS Bus App browser extension",
  "version": "1.4",
  "manifest_version": 3,
  "action": {
    "default_popup": "pins.html",
    "default_icon": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "busappdevs@proton.me"
    }
  }
}