Examine source code of FocusBlock

{
  "manifest_version" : 3 ,
  "name" : "FocusBlock",
  "version" : "1.0.0",
  "description" : "Block distracting websites to boost productivity. Focus modes, Pomodoro timer, and statistics. No API key needed!",
  "icons" : {
    "48" : "assets/icons/icon-48.png",
    "96" : "assets/icons/icon-96.png",
    "128" : "assets/icons/icon-128.png"
  },
  "action" : {
    "default_icon" : {
      "48" : "assets/icons/icon-48.png",
      "96" : "assets/icons/icon-96.png"
    },
    "default_title" : "FocusBlock - Stay Focused",
    "default_popup" : "src/popup/popup.html"
  },
  "background" : {
    "scripts" : [
      "src/background/background.js" 
    ]
  },
  "permissions" : [
    "storage" ,
    "webRequest" ,
    "tabs" 
  ],
  "host_permissions" : [
    "<all_urls>" 
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "focusblock@productivity.focus",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}