Examine source code of Unit Converter

{
  "manifest_version": 2,
  "name": "Unit Converter",
  "version": "1.0.0",
  "description": "Convert units of measurement with an accordion interface, save recent conversions, and copy results.",
  "permissions": [
    "storage",
    "clipboardWrite"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Unit Converter"
  },
  "icons": {
    "300": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d31c9a1a-80b7-4290-9a69-e925325e7fd2}"
    }
  }
}