Examine source code of YouTube Shorts Auto

{
  "manifest_version": 3,
  "name": "YouTube Shorts Auto Next",
  "version": "1.0.3",
  "description": "Automatically moves to the next YouTube Shorts video when the current one ends.",
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/shorts/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "youtube-shorts-auto-next@example.local",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}