Examine source code of HailBytes Engineering Toolkit

{
  "manifest_version" : 3 ,
  "name" : "HailBytes Engineering Toolkit",
  "version" : "1.0.3",
  "description" : "Professional network, security, and cloud engineering calculators. Subnet plans, password audits, bandwidth calculations and more.",
  "author": "HailBytes",
  "homepage_url" : "https://hailbytes.com",
  "browser_specific_settings": {
    "gecko": {
      "id": "engineering-toolkit@hailbytes.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    }
  },
  "permissions" : [
    "storage" ,
    "activeTab" ,
    "contextMenus" ,
    "alarms" 
  ],
  "action" : {
    "default_popup" : "popup.html",
    "default_title" : "HailBytes Toolkit",
    "default_icon" : {
      "16" : "icons/icon16.png",
      "32" : "icons/icon32.png",
      "48" : "icons/icon48.png",
      "128" : "icons/icon128.png"
    }
  },
  "icons" : {
    "16" : "icons/icon16.png",
    "32" : "icons/icon32.png",
    "48" : "icons/icon48.png",
    "128" : "icons/icon128.png"
  },
  "background" : {
    "scripts" : [
      "background.js" 
    ],
    "type" : "module" ,
    "persistent" : false 
  },
  "content_security_policy" : {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "web_accessible_resources" : [
    {
      "resources" : [
        "popup.html" 
      ],
      "matches" : [
        "<all_urls>" 
      ]
    }
  ]
}