Examine source code of TrueSight UI for D&D Beyond

{
  "manifest_version": 3,
  "name": "TrueSight UI for D&D Beyond",
  "description": "A visual overhaul for D&D Beyond character sheets with personal bookmarks and other QoL features.",
  "version": "1.1.5",
  "browser_specific_settings": {
    "gecko": {
      "id": "truesightui@krnkfrd.dev",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/TrueSightUI-icon-ON-16.png",
    "32": "icons/TrueSightUI-icon-ON-32.png",
    "48": "icons/TrueSightUI-icon-ON-48.png",
    "128": "icons/TrueSightUI-icon-ON-128.png"
  },
  "action": {
    "default_title": "TrueSight UI",
    "default_popup": "popup.html"
  },
  "permissions": [
    "activeTab",
    "storage"
  ],
  "host_permissions": [
    "https://www.dndbeyond.com/characters/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.dndbeyond.com/characters/*"
      ],
      "js": [
        "content/TrueSightUI-Bootstrap.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "web_accessible_resources": [
    {
      "resources": [
        "content/styles.css",
        "content/tsui-cursor.css",
        "content/tsui-filters.css",
        "content/tsui-navi.css",
        "content/tsui-concentration.css",
        "content/TrueSightUI-SitebarSync.js",
        "content/TrueSightUI-QuickLinks.js",
        "content/TrueSightUI-PassiveSenses.js",
        "content/TrueSightUI-GameLogScroll.js",
        "content/TrueSightUI-Concentration.js",
        "icons/partywizard.gif",
        "icons/wizard.png"
      ],
      "matches": [
        "https://www.dndbeyond.com/*"
      ]
    }
  ]
}