Examine source code of Mystic Sci-Fi Book Picker

{
  "manifest_version": 3,
  "name": "Mystic Sci-Fi Book Picker",
  "version": "1.0",
  "description": "Randomly select a science fiction book with themes of the unexplainable, wrapped in a mystical interface.",
  "action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "icons": {
    "128": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "hollispulliamkswc4116@hotmail.com"
    }
  }
}