Examine source code of KDP Watcher for Firefox

{
  "manifest_version": 3,
  "name": "KDP Watcher for Firefox",
  "version": "1.5",
  "description": "Automated KDP Data Extraction Extension",
  "permissions": [
    "alarms",
    "storage",
    "tabs",
    "scripting",
    "activeTab"
  ],
  "host_permissions": [
    "https://kdp.amazon.com/*",
    "https://kdpreports.amazon.com/*",
    "https://*.railway.app/*",
    "https://*.ngrok-free.app/*"
  ],
  "background": {
    "scripts": [
      "assets/background.js"
    ],
    "type": "module"
  },
  "action": {
    "default_popup": "index.html",
    "default_title": "KDP Watcher Settings"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "kdp-watcher@skygnois.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}