Examine source code of OpenFront WeakAura

{
  "manifest_version": 3,
  "name": "OpenFront WeakAura",
  "version": "1.0.0",
  "description": "Adds unit and attack calculation helpers to OpenFront game pages.",
  "content_scripts": [
    {
      "matches": [
        "https://openfront.io/*"
      ],
      "js": [
        "main.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "openfront-weakaura@reddragondms",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}