Examine source code of Ship Clipboard Keeper

{
  "manifest_version": 3,
  "name": "Clipboard Keeper",
  "version": "1.0",
  "description": "Save recent clipboard text and images, pin important items, and copy them back with one click.",
  "permissions": [
    "storage",
    "clipboardRead",
    "clipboardWrite"
  ],
  "action": {
    "default_title": "Clipboard Keeper",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "clipboard-history-extension@anand.local",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}