Examine source code of Quick Actions

{
  "manifest_version": 3,
  "name": "Quick Actions - Search and Copy (Beta)",
  "version": "1.5",
  "description": "Adds a copy button and search button when text is selected on webpages, with a customizable options section",
  "browser_specific_settings": {
    "gecko": {
      "id": "quick-actions@example.org"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "browser-polyfill.js",
        "content.js"
      ],
      "css": [
        "styles.css"
      ],
      "run_at": "document_end",
      "all_frames": true
    }
  ],
  "permissions": [
    "activeTab",
    "clipboardWrite",
    "storage"
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "action": {
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "styles.css"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}