Examine source code of ChatGPT Message Saver

{
  "manifest_version": 2,
  "name": "ChatGPT Message Saver",
  "version": "0.1.0",
  "description": "Adds a save icon next to each ChatGPT user message so you can bookmark and jump back to it later.",
  "permissions": [
    "storage",
    "tabs",
    "*://chat.openai.com/*",
    "*://chatgpt.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "chatgpt-message-saver@nimajelodari.me",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/logo16.png",
    "32": "icons/logo32.png",
    "48": "icons/logo48.png",
    "128": "icons/logo128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://chat.openai.com/*",
        "*://chatgpt.com/*"
      ],
      "js": [
        "content-script.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_action": {
    "default_icon": "icons/logo128.png",
    "default_popup": "popup.html",
    "default_title": "ChatGPT bookmarks"
  }
}