Examine source code of AniList Tracker

{
  "manifest_version": 3,
  "name": "AniList Tracker",
  "version": "1.1.0",
  "description": "Track your anime and manga progress on AniList",
  "icons": {
    "16": "assets/icons/icon16.png",
    "48": "assets/icons/icon48.png",
    "128": "assets/icons/icon128.png"
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "host_permissions": [
    "https://graphql.anilist.co/*",
    "https://anilist.co/*",
    "https://anilist-tracker-production.up.railway.app/*"
  ],
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "assets/icons/icon16.png",
      "48": "assets/icons/icon48.png",
      "128": "assets/icons/icon128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/widget.js"
      ],
      "css": [
        "content/widget.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "background": {
    "scripts": [
      "polyfill.js",
      "config.js",
      "utils/storage.js",
      "services/anilist-pkce.js",
      "background/background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "anilist-tracker@extension.local",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}