Examine source code of ContinuousPlay

{
  "manifest_version": 3,
  "name": "ContinuousPlay",
  "version": "1.0.1",
  "description": "Auto-clicks YouTube's 'Continue watching?' prompt so playback never stalls - runs only on youtube.com, collects no data.",
  "browser_specific_settings": {
    "gecko": {
      "id": "continuousplay@tristate.digital",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.youtube.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "worker.js"
      ],
      "matches": [
        "https://www.youtube.com/*"
      ]
    }
  ]
}