Examine source code of Tenea Time Tracker

{
  "manifest_version": 2,
  "name": "Tenea Time Tracker",
  "version": "1.0.0",
  "description": "Automate daily time tracking in Tenea",
  "icons": {
    "48": "icons/icon.svg",
    "96": "icons/icon.svg"
  },
  "permissions": [
    "cookies",
    "tabs",
    "https://sewan.tenea.com/*",
    "https://api.ipify.org/*"
  ],
  "browser_action": {
    "default_icon": "icons/icon.svg",
    "default_title": "Tenea Time Tracker",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://sewan.tenea.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "tenea-time-tracker@sewan.com",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo"
        ],
        "optional": []
      }
    }
  }
}