Examine source code of Gemini Chat TOC

{
  "manifest_version": 3,
  "name": "Gemini Chat TOC",
  "version": "1.0",
  "description": "Adds a navigation sidebar to Gemini chats based on user prompts for easier navigation.",
  "content_scripts": [
    {
      "matches": [
        "https://gemini.google.com/app/*"
      ],
      "js": [
        "content_scripts/content-0.js"
      ],
      "css": [
        "content_scripts/content-0.css"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "gemini-chat-toc@divenire.com",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ],
        "optional": []
      }
    }
  },
  "icons": {
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "content_scripts/content-0.css"
      ],
      "matches": [
        "https://gemini.google.com/*"
      ]
    }
  ]
}