Examine source code of Goodreads Buddy

{
  "icons": {
    "16": "icon16.plasmo.2577fc03.png",
    "32": "icon32.plasmo.d583dc1e.png",
    "48": "icon48.plasmo.e0fcfb1d.png",
    "64": "icon64.plasmo.e6259081.png",
    "128": "icon128.plasmo.96a1ede9.png"
  },
  "manifest_version": 3,
  "action": {
    "default_icon": {
      "16": "icon16.plasmo.2577fc03.png",
      "32": "icon32.plasmo.d583dc1e.png",
      "48": "icon48.plasmo.e0fcfb1d.png",
      "64": "icon64.plasmo.e6259081.png",
      "128": "icon128.plasmo.96a1ede9.png"
    },
    "default_popup": "popup.html"
  },
  "version": "1.0.1",
  "author": "NubPlayz",
  "name": "Goodreads Buddy",
  "description": "Compare book ratings from Google Books, Amazon, Open Library & StoryGraph.",
  "background": {
    "scripts": [
      "static/background/index.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.goodreads.com/*"
      ],
      "js": [
        "inject-rating.5d603cbc.js"
      ],
      "css": []
    }
  ],
  "host_permissions": [
    "https://openlibrary.org/*",
    "https://www.amazon.com/*",
    "https://app.thestorygraph.com/*",
    "https://play.google.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "goodreads-buddy@nub.dev",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}