Examine source code of Vietnamese Word Quest

{
  "manifest_version": 2,
  "name": "Vietnamese Word Quest",
  "version": "1.0",
  "description": "A fun and educational game to enhance your Vietnamese-to-English vocabulary skills through engaging word-matching challenges.",
  "icons": {
    "48": "vocab_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Vietnamese Word Quest"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{6a3b9f12-7e2c-4b9a-9d3e-8f4c5b7a2d1e}"
    }
  }
}