Examine source code of QueryQuill

{
  "manifest_version": 3,
  "name": "QueryQuill",
  "version": "1.0.0",
  "description": "Pick any page element and extract stable CSS selector plus XPath snippets.",
  "icons": {
    "48": "mark/icon-48.png",
    "96": "mark/icon-96.png",
    "128": "mark/icon-128.png"
  },
  "action": {
    "default_title": "QueryQuill",
    "default_popup": "dock/panel.html",
    "default_icon": {
      "48": "mark/icon-48.png"
    }
  },
  "permissions": [
    "tabs",
    "storage",
    "clipboardWrite"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "picker/bridge.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{68d24d47-84cf-4f84-b357-eb87df2ea40f}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}