Examine source code of Vietnamese Verb Master

{
  "manifest_version": 2,
  "name": "Vietnamese Verb Master",
  "version": "1.0",
  "description": "Elevate your Vietnamese language skills by mastering essential verbs! Interactive practice with randomized challenges and instant feedback.",
  "icons": {
    "48": "verb_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Vietnamese Verb Master"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{f7e21234-4cb2-4210-a3fd-4c351121b279}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}