curl --request GET \
  --url https://api.adullam.dev/v1/webhooks \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": "webhook_abc123",
      "url": "https://mystore.com/webhooks/adullam",
      "events": [
        "payment.completed",
        "payment.failed",
        "transfer.completed"
      ],
      "status": "active",
      "secret": "whsec_abc123def456...",
      "description": "Production webhook",
      "created_at": "2024-01-15T10:00:00Z",
      "updated_at": "2024-01-15T10:00:00Z"
    }
  ]
}