Examine source code of SnapNote

{
  "manifest_version": 3,
  "name": "SnapNote",
  "version": "0.4",
  "description": "SnapNote is an open-source note-taking extension created with the goals of transparency, convenience, and most importantly, speed.",
  "permissions": [
    "clipboardWrite"
  ],
  "action": {
    "default_popup": "index.html"
  },
  "icons": {
    "128": "snapnote-blue.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d00a054f-b1e7-4ec6-9cfa-db593aa91768}"
    }
  }
}