Examine source code of Auto Refresh Tab

{
  "manifest_version": 3,
  "name": "Auto Refresh Tab",
  "description": "Automatically refreshes the selected tab at configurable intervals via right-click menu or popup.",
  "version": "1.2.3",
  "browser_specific_settings": {
    "gecko": {
      "id": "auto-refresh-tab@iissmart.dev",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "tabs",
    "contextMenus",
    "storage",
    "alarms"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "Auto Refresh Tab",
    "default_popup": "popup.html"
  },
  "icons": {
    "48": "icon48.svg",
    "128": "icon128.svg"
  }
}