Examine source code of Mythical Beasts Quest

{
  "manifest_version": 2,
  "name": "Mythical Beasts Quest",
  "version": "1.0",
  "description": "Enter the realm of legends! This popup quiz gives a Vietnamese clue about a mythical creature from folklore or fantasy — guess its English name. Perfect for mythology fans, gamers, and English learners who love magic and mystery.",
  "icons": {
    "48": "myth_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Mythical Beasts Quest"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{93fe314c-f138-4710-a536-c4dfd789876c}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}