Examine source code of Hacker News UX

{
  "manifest_version": 3,
  "version": "2.0.2",
  "name": "Hacker News UX",
  "description": "Hacker News User Experience experiment",
  "web_accessible_resources": [
    {
      "resources": [
        "images/ajax-loader-classic.gif",
        "images/ajax-loader-dark.gif",
        "images/ajax-loader-classic-01.gif",
        "images/ajax-loader-classic-02.gif",
        "images/votearrow.png",
        "images/yc.png",
        "./dist/ux.html"
      ],
      "matches": [
        "https://news.ycombinator.com/*",
        "http://news.ycombinator.net/*",
        "http://news.ycombinator.org/*",
        "http://news.ycombinator.com/*"
      ]
    }
  ],
  "background": {
    "scripts": [
      "./dist/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://news.ycombinator.com/*",
        "http://news.ycombinator.net/*",
        "http://news.ycombinator.org/*",
        "http://news.ycombinator.com/*"
      ],
      "css": [
        "./dist/style.css"
      ],
      "js": [
        "./dist/build.js"
      ],
      "run_at": "document_start"
    }
  ],
  "host_permissions": [
    "https://news.ycombinator.com/*",
    "http://news.ycombinator.net/*",
    "http://news.ycombinator.org/*",
    "http://news.ycombinator.com/*"
  ],
  "permissions": [
    "unlimitedStorage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{A4D18A3A-ADAE-40CA-AAAB-F194BF36D752}",
      "strict_min_version": "109.0"
    }
  }
}