Examine source code of CardGuard for eBay

{
  "manifest_version": 3,
  "name": "CardGuard for eBay",
  "version": "1.1.1",
  "description": "Warnt auf eBay-Angeboten vor selbst definierten Begriffen in Titel und Beschreibung.",
  "icons": {
    "48": "icons/icon.svg",
    "96": "icons/icon.svg"
  },
  "action": {
    "default_title": "CardGuard Wortliste",
    "default_popup": "popup/popup.html",
    "default_icon": "icons/icon.svg"
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "*://*.ebay.de/*",
    "*://*.ebay.com/*",
    "*://*.ebay.co.uk/*",
    "*://*.ebay.at/*",
    "*://*.ebay.ch/*",
    "*://*.ebay.fr/*",
    "*://*.ebay.it/*",
    "*://*.ebay.es/*",
    "*://*.ebay.nl/*",
    "*://*.ebay.be/*",
    "*://*.ebay.ca/*",
    "*://*.ebay.com.au/*",
    "*://*.ebay.ie/*",
    "*://*.ebay.pl/*",
    "*://*.ebaydesc.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.ebay.de/*",
        "*://*.ebay.com/*",
        "*://*.ebay.co.uk/*",
        "*://*.ebay.at/*",
        "*://*.ebay.ch/*",
        "*://*.ebay.fr/*",
        "*://*.ebay.it/*",
        "*://*.ebay.es/*",
        "*://*.ebay.nl/*",
        "*://*.ebay.be/*",
        "*://*.ebay.ca/*",
        "*://*.ebay.com.au/*",
        "*://*.ebay.ie/*",
        "*://*.ebay.pl/*",
        "*://*.ebaydesc.com/*"
      ],
      "js": [
        "content/content.js"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "cardguard-ebay@local",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}