Examine source code of Letterboxd Enhanced

{
  "manifest_version": 3,
  "name": "Letterboxd Enhanced",
  "version": "1.1",
  "permissions": [
    "storage",
    "scripting",
    "tabs",
    "activeTab"
  ],
  "description": "Enhance your Letterboxd experience with optional features like hiding ratings and reviews, displaying total watch time, and adding a Shuffle button to lists and watchlists.",
  "homepage_url": "https://github.com/sirlencio/LetterboxdEnhanced",
  "action": {
    "default_icon": "icons/icon-48.png",
    "default_title": "Letterboxd Enhanced",
    "default_popup": "popup.html"
  },
  "icons": {
    "48": "icons/icon-48.png",
    "92": "icons/icon-92.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://letterboxd.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "letterboxd-enhanced@example.com"
    }
  }
}