Examine source code of Book More

{
  "manifest_version": 3,
  "name": "Book More",
  "version": "2.1.0",
  "description": "Quick-access buttons for Anna's Archive and Libby.",
  "author": "cccccc",
  "icons": {
    "128": "icon-128.png"
  },
  "permissions": [
    "storage",
    "clipboardWrite",
    "alarms"
  ],
  "host_permissions": [
    "https://neodb.social/book/*",
    "https://book.douban.com/subject/*",
    "https://www.goodreads.com/book/*",
    "https://app.thestorygraph.com/books/*",
    "https://tiny-leaf-4d57.cccccccccccc.workers.dev/*"
  ],
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "matches": [
        "https://neodb.social/book/*",
        "https://book.douban.com/subject/*",
        "https://www.goodreads.com/book/*",
        "https://app.thestorygraph.com/books/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "book-more@yourdomain.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}