Examine source code of Tuck-It

{
  "manifest_version": 3,
  "name": "Tuck-It",
  "version": "0.7",
  "description": "Adds button that tucks away tabs into bookmark folders based on date.",
  "permissions": [
    "tabs",
    "bookmarks"
  ],
  "action": {
    "default_icon": "icons/tuck-it-32.png"
  },
  "background": {
    "scripts": [
      "tuck_it.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6818a030-65a5-4af1-8035-2e4950d01f25}",
      "strict_min_version": "109.0"
    }
  }
}