Examine source code of Pomodoro daily tracker

{
  "manifest_version": 2,
  "name": "Pomodoro Timer Pro",
  "version": "1.0",
  "description": "Professional Pomodoro Timer with daily tracking",
  "permissions": [
    "storage",
    "notifications"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Pomodoro Timer",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c0b591fe-46ea-4d81-8391-2bf4c572c9dc}"
    }
  }
}