Examine source code of ⏰ Meeting Quick Reminder

{
  "manifest_version": 3,
  "name": "⏰ Meeting Quick Reminder",
  "version": "1.0.0",
  "description": "Set a meeting start time, watch a countdown (digital + ring + mini analog clock), and get a reminder.",
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "128": "icon.png"
    }
  },
  "icons": {
    "128": "icon.png"
  },
  "permissions": [
    "storage",
    "notifications"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "wistijdiveltu7@hotmail.com"
    }
  }
}