Examine source code of Pomodoro Timer for ADHD

{
  "manifest_version": 3,
  "name": "Pomodoro Timer",
  "version": "1.1",
  "description": "Customizable Pomodoro Timer with alerts",
  "permissions": [
    "storage",
    "notifications",
    "theme"
  ],
  "icons": {
    "48": "icon48.png",
    "96": "icon96.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon48.png",
      "96": "icon96.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "pomodoro-timer@pomodoro",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}