Examine source code of Complete Zetamac Tracker

{
  "manifest_version": 3,
  "name": "Arithmetic Tracker for Zetamac",
  "version": "1.3.0",
  "description": "Track scores on arithmetic.zetamac.com, visualize progress locally, and sync runs to Google Sheets.",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_title": "Zetamac Tracker"
  },
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon96.png"
  },
  "permissions": [
    "storage",
    "scripting",
    "tabs",
    "webNavigation",
    "webRequest"
  ],
  "host_permissions": [
    "*://zetamac.com/*",
    "*://*.zetamac.com/*",
    "https://script.google.com/*",
    "https://*.googleusercontent.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://zetamac.com/*",
        "*://*.zetamac.com/*"
      ],
      "all_frames": true,
      "match_about_blank": true,
      "js": [
        "content/content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{980781c8-7830-45dd-9b95-8995690fa9c8}",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "personallyIdentifyingInfo",
          "websiteActivity",
          "websiteContent"
        ]
      }
    }
  }
}