Examine source code of Gemini Title Extractor

{
  "manifest_version": 3,
  "name": "Gemini Title Extractor",
  "version": "1.0",
  "description": "Updates the browser tab title with the active chat title on gemini.google.com",
  "icons": {
    "48": "icon.svg",
    "96": "icon.svg"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "gemini-title-extractor@zhdi.github.io",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://gemini.google.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ]
}