Examine source code of ChatGPT Table of Content

{
  "manifest_version": 2,
  "name": "AI Assistant TOC",
  "version": "3",
  "description": "Adds a Table of Contents to AI Assistants",
  "icons": {
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "*://*.chatgpt.com/*",
    "*://*.gemini.google.com/*",
    "*://*.perplexity.ai/*",
    "*://*.claude.ai/*",
    "*://*.grok.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.chatgpt.com/*",
        "*://*.gemini.google.com/*",
        "*://*.perplexity.ai/*",
        "*://*.claude.ai/*",
        "*://*.grok.com/*"
      ],
      "js": [
        "code.js"
      ],
      "css": [
        "code.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "gpttoc@aosl.jb"
    }
  }
}