Examine source code of Session Vault for Firefox

{
  "manifest_version" : 3 ,
  "name" : "Session Vault for Firefox",
  "short_name" : "Session Vault",
  "version" : "0.1.3",
  "description" : "Локальные резервные копии окон, вкладок и групп вкладок с безопасным восстановлением. Ничего не отправляет в сеть.",
  "browser_specific_settings": {
    "gecko": {
      "id": "firefox-session-vault@victor21123",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions" : [
    "tabs" ,
    "tabGroups" ,
    "storage" ,
    "unlimitedStorage" ,
    "downloads" ,
    "alarms" ,
    "notifications" 
  ],
  "background" : {
    "scripts" : [
      "src/background.js" 
    ],
    "type" : "module" 
  },
  "action" : {
    "default_title" : "Session Vault",
    "default_popup" : "src/ui/popup.html",
    "default_icon" : "src/icons/icon.svg"
  },
  "options_ui" : {
    "page": "src/ui/manager.html" ,
    "open_in_tab": true
  },
  "icons" : {
    "48" : "src/icons/icon-48.png",
    "96" : "src/icons/icon-96.png",
    "128" : "src/icons/icon-128.png"
  }
}