Examine source code of WordSkill Puzzle

{
  "manifest_version": 2,
  "name": "WordSkill Puzzle",
  "version": "1.0",
  "description": "An interactive quiz game to sharpen your Vietnamese-to-English vocabulary skills with engaging word challenges.",
  "icons": {
    "48": "vocab_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "WordSkill Puzzle"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{859f26bd-1f70-4d77-9a7d-ba30f0d3b34d}"
    }
  }
}