Examine source code of Quick Notes Overlay

{
  "manifest_version": 3,
  "name": "Quick Notes Overlay",
  "version": "1.0",
  "description": "This addon allows users to take quick notes directly on any webpage without leaving it. Notes are saved locally or synced to a preferred cloud service, and can be associated with specific URLs. It features rich text editing, markdown support, and the ability to highlight text on the page to automatically add it to notes.",
  "action": {
    "default_popup": "popup.html",
    "default_icon": "quick_notes_overlay.png"
  },
  "icons": {
    "128": "quick_notes_overlay.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "dguyvargoirupg46@hotmail.com"
    }
  }
}