Examine source code of File Cabinet

{
  "manifest_version": 2,
  "name": "File Cabinet",
  "version": "2.1.1",
  "description": "File open tabs into top-level cabinets, then organize them into drawers, folders, and files.",
  "author": "Jeff Jones & ChatGPT",
  "browser_action": {
    "default_title": "File Cabinet",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/file-cabinet-16.png",
      "32": "icons/file-cabinet-32.png",
      "48": "icons/file-cabinet-48.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "options_ui": {
    "page": "settings.html",
    "open_in_tab": true
  },
  "permissions": [
    "tabs",
    "tabHide",
    "storage",
    "contextMenus"
  ],
  "icons": {
    "16": "icons/file-cabinet-16.png",
    "32": "icons/file-cabinet-32.png",
    "48": "icons/file-cabinet-48.png",
    "64": "icons/file-cabinet-64.png",
    "96": "icons/file-cabinet-96.png",
    "128": "icons/file-cabinet-128.png",
    "256": "icons/file-cabinet-256.png",
    "512": "icons/file-cabinet-512.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "file-cabinet@ashforge",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}