Examine source code of Home by si4k

{
  "manifest_version": 3,
  "name": "Home by si4k",
  "version": "2.2.0",
  "description": "A beautiful, high-performance, and feature-rich new tab override extension for Mozilla Firefox.",
  "author": "Akshit Kamboj (si4k)",
  "homepage_url": "https://github.com/akshitKamboj13/minimal-homepage",
  "browser_specific_settings": {
    "gecko": {
      "id": "home-by-si4k@akshitkamboj.com",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "assets/icons/icon16.png",
    "48": "assets/icons/icon48.png",
    "128": "assets/icons/icon128.png"
  },
  "chrome_url_overrides": {
    "newtab": "src/index.html"
  },
  "background": {
    "scripts": [
      "src/background.js"
    ]
  },
  "permissions": [
    "bookmarks",
    "search",
    "declarativeNetRequest",
    "contextMenus",
    "activeTab",
    "tabs"
  ],
  "host_permissions": [
    "*://suggestqueries.google.com/*",
    "*://*.yandex.com/*",
    "*://*.yandex.ru/*",
    "*://*.bing.com/*"
  ],
  "sandbox": {
    "pages": [
      "src/sandbox.html"
    ]
  },
  "web_accessible_resources": [
    {
      "resources": [
        "app-bootstrapper.js",
        "src/app-bootstrapper.js",
        "src/js/app-bootstrapper.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}