Examine source code of Gemini Export Pro

{
  "manifest_version": 3,
  "name": "Gemini Export Pro",
  "version": "1.1.2",
  "description": "Export Gemini shared chats to clean DOCX and HTML files with one click.",
  "browser_specific_settings": {
    "gecko": {
      "id": "geminiexportpro@local-dev.com",
      "strict_min_version": "109.0"
    }
  },
  "permissions": [
    "activeTab",
    "scripting",
    "downloads"
  ],
  "host_permissions": [
    "https://gemini.google.com/*",
    "https://g.co/*"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_title": "Gemini Export Pro"
  },
  "content_scripts": [
    {
      "matches": [
        "https://gemini.google.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}