Examine source code of Currency Calculator

{
  "manifest_version": 3,
  "name": "Currency Calculator",
  "version": "1.3",
  "description": "Converts an amount from a base currency to multiple target currencies and displays the result in words.",
  "icons": {
    "48": "icons/icon-128.png",
    "128": "icons/icon-48.png"
  },
  "action": {
    "default_icon": "icons/icon-48.png",
    "default_title": "Currency Calculator",
    "default_popup": "popup.html"
  },
  "host_permissions": [
    "https://latest.currency-api.pages.dev/*"
  ],
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "prashant-ff-currency-calculator@hyperlycloud.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "sidebar_action": {
    "default_title": "Currency Calculator",
    "default_panel": "popup.html",
    "default_icon": "icons/icon-128.png"
  }
}