Examine source code of Leetcode Enhancer

{
  "manifest_version": 3,
  "name": "Leetcode Enhancer",
  "version": "1.76",
  "author": "Lovesh Dongre",
  "description": "A browser extension to improve productivity on Leetcode.",
  "icons": {
    "48": "icons/logo.png",
    "96": "icons/logo-96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://leetcode.com/*"
      ],
      "css": [
        "content-script.css"
      ],
      "js": [
        "content-script.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "service-worker.js"
    ]
  },
  "action": {
    "default_icon": {
      "48": "icons/logo.png",
      "96": "icons/logo-96.png"
    },
    "default_title": "Leetcode Enhancer",
    "default_popup": "popup.html",
    "theme_icons": [
      {
        "light": "icons/logo.png",
        "dark": "icons/logo.png",
        "size": 48
      }
    ]
  },
  "permissions": [
    "storage"
  ],
  "optional_host_permissions": [
    "https://api.cohere.ai/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{ca2d6de6-3a5e-4ab3-afae-2ef6e1f241f0}"
    }
  }
}