Examine source code of ChatGPT Message Navigator

{
  "manifest_version": 3,
  "name": "ChatGPT Message Navigator",
  "version": "1.5",
  "description": "Easily jump between messages in a ChatGPT conversation.",
  "permissions": [
    "activeTab",
    "scripting"
  ],
  "host_permissions": [
    "https://chatgpt.com/*",
    "https://chat.openai.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://chatgpt.com/*",
        "https://chat.openai.com/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "styles.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "chatgpt-message-navigator@adi",
      "strict_min_version": "109.0"
    }
  }
}