Examine source code of Royal Passkey & 2FA

{
  "manifest_version": 2,
  "name": "Royal Passkey & 2FA",
  "version": "1.5.0",
  "description": "Secure passkey and 2FA manager with encrypted backup, import/export, and local vault protection",
  "permissions": [
    "storage",
    "alarms",
    "tabs",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/content.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "web_accessible_resources": [
    "content/webauthn-inject.js"
  ],
  "browser_action": {
    "default_title": "Royal Passkey & 2FA",
    "default_popup": "ui/popup.html"
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_security_policy": "script-src 'self'; object-src 'none'; base-uri 'none'",
  "browser_specific_settings": {
    "gecko": {
      "id": "royal-passkey@royal.app",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": [
          "authenticationInfo"
        ]
      }
    }
  }
}