Examine source code of CleanerChatGPT

{
  "manifest_version": 2,
  "name": "CleanerChatGPT",
  "version": "1.0.0",
  "description": "CleanerChatGPT lets you select and delete ChatGPT conversations in bulk.",
  "browser_specific_settings": {
    "gecko": {
      "id": "cleanerchatgpt@presetstudio.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "128": "icons/icon128.png"
  },
  "permissions": [
    "https://chatgpt.com/*",
    "storage"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "128": "icons/icon128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://chatgpt.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ]
}