Examine source code of Cosmic Clue Quest

{
  "manifest_version": 2,
  "name": "Cosmic Clue Quest",
  "version": "1.0",
  "description": "Explore the universe! Guess English astronomy and space terms from Vietnamese clues. A fun educational tool for English learners and space enthusiasts.",
  "icons": {
    "48": "cosmic_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Cosmic Clue Quest"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{e6b3e418-d471-4327-a745-fdbbb9927f64}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}