Examine source code of Proverb Quest

{
  "manifest_version": 2,
  "name": "Proverb Quest",
  "version": "1.0",
  "description": "Challenge yourself with timeless English proverbs. Fill in the missing word and improve your cultural wisdom and English fluency every day.",
  "icons": {
    "48": "proverb-icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Proverb Quest"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{00dfe27e-548e-4e65-8b9c-14b1e71f60a9}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}