Examine source code of Orange Clockwork - Alarme

{
  "manifest_version": 2,
  "name": "Orange Clockwork - Alarme",
  "version": "1.0.0",
  "description": "Relógio com alarme para ajudar na produtividade",
  "icons": {
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "browser_action": {
    "default_popup": "popup/popup.html",
    "default_title": "Orange Clockwork",
    "default_icon": {
      "48": "images/icon-48.png",
      "128": "images/icon-128.png"
    }
  },
  "background": {
    "scripts": [
      "background-firefox.js"
    ],
    "persistent": true
  },
  "permissions": [
    "alarms",
    "storage",
    "notifications"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "orange-clockwork@orangeclockwork.dev",
      "strict_min_version": "91.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}