Examine source code of WatchTube

{
  "manifest_version": 3,
  "name": "WatchTube",
  "version": "2.0.0",
  "description": "Enhances YouTube’s homepage by adding customizable playlist rows, surfacing random unwatched subscription videos, and optionally hiding Shorts.",
  "icons": {
    "48": "icons/logo48.png",
    "96": "icons/logo96.png"
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://www.youtube.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "watchtube-addon@tushonochki.dev",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": "icons/logo48.png",
    "default_title": "WatchTube"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.youtube.com/*"
      ],
      "js": [
        "content/content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "content/*",
        "content/features/feedRows/shared/videoActions.js"
      ],
      "matches": [
        "https://www.youtube.com/*"
      ]
    }
  ]
}