Examine source code of KDP Quick Insights

{
  "manifest_version": 3,
  "name": "KDP Quick Insights",
  "version": "1.1.0",
  "description": "Amazon KDP research extension. BSR, sales estimates, royalties & niche scoring — inline on every book page.",
  "browser_specific_settings": {
    "gecko": {
      "id": "kdp-quick-insights@yourdomain.com",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "permissions": [
    "storage",
    "clipboardWrite"
  ],
  "host_permissions": [
    "https://www.amazon.com/*",
    "https://www.amazon.co.uk/*",
    "https://www.amazon.ca/*",
    "https://www.amazon.de/*",
    "https://www.amazon.fr/*",
    "https://www.amazon.co.jp/*",
    "https://www.amazon.es/*",
    "https://www.amazon.it/*",
    "https://www.amazon.com.au/*",
    "https://www.amazon.com.br/*",
    "https://www.amazon.com.mx/*",
    "https://www.amazon.in/*",
    "https://www.amazon.nl/*",
    "https://www.amazon.se/*",
    "https://www.amazon.pl/*",
    "https://www.amazon.tr/*",
    "https://www.amazon.ae/*",
    "https://www.amazon.sg/*",
    "https://www.amazon.sa/*",
    "https://www.amazon.eg/*",
    "https://www.amazon.com.be/*",
    "https://completion.amazon.com/*",
    "https://completion.amazon.co.uk/*",
    "https://completion.amazon.ca/*",
    "https://completion.amazon.de/*",
    "https://completion.amazon.fr/*",
    "https://completion.amazon.co.jp/*",
    "https://completion.amazon.es/*",
    "https://completion.amazon.it/*",
    "https://completion.amazon.com.au/*",
    "https://completion.amazon.com.br/*",
    "https://completion.amazon.com.mx/*",
    "https://completion.amazon.in/*",
    "https://completion.amazon.nl/*",
    "https://completion.amazon.se/*",
    "https://completion.amazon.pl/*",
    "https://completion.amazon.tr/*",
    "https://completion.amazon.ae/*",
    "https://completion.amazon.sg/*",
    "https://completion.amazon.sa/*",
    "https://completion.amazon.eg/*",
    "https://completion.amazon.com.be/*",
    "https://api.gumroad.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.amazon.com/*",
        "https://www.amazon.co.uk/*",
        "https://www.amazon.ca/*",
        "https://www.amazon.de/*",
        "https://www.amazon.fr/*",
        "https://www.amazon.co.jp/*",
        "https://www.amazon.es/*",
        "https://www.amazon.it/*",
        "https://www.amazon.com.au/*",
        "https://www.amazon.com.br/*",
        "https://www.amazon.com.mx/*",
        "https://www.amazon.in/*",
        "https://www.amazon.nl/*",
        "https://www.amazon.se/*",
        "https://www.amazon.pl/*",
        "https://www.amazon.tr/*",
        "https://www.amazon.ae/*",
        "https://www.amazon.sg/*",
        "https://www.amazon.sa/*",
        "https://www.amazon.eg/*",
        "https://www.amazon.com.be/*"
      ],
      "js": [
        "content/license.js",
        "content/marketplace.js",
        "content/estimator.js",
        "content/parser.js",
        "content/opportunity.js",
        "content/winprobability.js",
        "content/niche.js",
        "content/authorlookup.js",
        "content/ui.js",
        "content/keywords.js",
        "content/content.js"
      ],
      "css": [
        "content/styles.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "popup/popup.html"
      ],
      "matches": [
        "https://www.amazon.com/*",
        "https://www.amazon.co.uk/*",
        "https://www.amazon.ca/*",
        "https://www.amazon.de/*",
        "https://www.amazon.fr/*",
        "https://www.amazon.co.jp/*",
        "https://www.amazon.es/*",
        "https://www.amazon.it/*",
        "https://www.amazon.com.au/*",
        "https://www.amazon.com.br/*",
        "https://www.amazon.com.mx/*",
        "https://www.amazon.in/*",
        "https://www.amazon.nl/*",
        "https://www.amazon.se/*",
        "https://www.amazon.pl/*",
        "https://www.amazon.tr/*",
        "https://www.amazon.ae/*",
        "https://www.amazon.sg/*",
        "https://www.amazon.sa/*",
        "https://www.amazon.eg/*",
        "https://www.amazon.com.be/*"
      ]
    }
  ]
}