Examine source code of Quackcheck

{
  "manifest_version": 3,
  "version": "1.4.1",
  "name": "Quackcheck",
  "homepage_url": "https://quackcheck.puny.ai",
  "description": "Check article sources, to avoid being misinformed.",
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "{17a05751-a023-4fb1-ada7-2c87e59f76c5}",
      "strict_min_version": "109.0"
    }
  },
  "permissions": [
    "activeTab",
    "scripting",
    "storage"
  ],
  "icons": {
    "16": "icons/logo16.png",
    "48": "icons/logo48.png",
    "128": "icons/logo128.png"
  },
  "action": {
    "default_popup": "src/popup/index.html",
    "default_title": "Quackcheck",
    "default_icon": {
      "19": "icons/logo19.png",
      "38": "icons/logo38.png"
    }
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+O",
        "mac": "Command+Shift+O"
      },
      "description": "Opens popup"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "content-script.css"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "content_security_policy": {}
}