Examine source code of Kenmei Covers

{
  "manifest_version": 2,
  "name": "Kenmei Covers",
  "version": "0.8.1",
  "description": "Displays covers on kenmei.co - in Firefox the :has selector must be activated: layout.css.has-selector.enabled = true",
  "browser_specific_settings": {
    "gecko": {
      "id": "{8801c9b5-d4ff-4cfe-97a7-5855123e40ba}"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.kenmei.co/dashboard*"
      ],
      "js": [
        "scripts/jquery-3.6.3.min.js",
        "content.js"
      ],
      "css": [
        "content.css"
      ]
    }
  ],
  "browser_action": {
    "browser_style": true,
    "theme_icons": [
      {
        "light": "icons/icon-light-16.png",
        "dark": "icons/icon-dark-16.png",
        "size": 16
      },
      {
        "light": "icons/icon-light-32.png",
        "dark": "icons/icon-dark-32.png",
        "size": 32
      }
    ]
  },
  "icons": {
    "48": "icons/icon-light-48.png",
    "96": "icons/icon-light-96.png"
  },
  "web_accessible_resources": [
    "kenmei.png"
  ],
  "permissions": [
    "<all_urls>"
  ]
}