Examine source code of Viet Phrase Master

{
  "manifest_version": 2,
  "name": "Viet Phrase Master",
  "version": "1.0",
  "description": "Master essential Vietnamese phrases and daily conversations with this interactive quiz. Practice high-frequency expressions to quickly improve your speaking and listening skills.",
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Viet Phrase Master"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{db9a8259-1cd4-481d-a2cd-b080d8b0515c}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}