curl --request GET \
  --url https://api.adullam.dev/v1/transfers/batch/{batch_id} \
  --header 'Authorization: Bearer <token>'

{
  "id": "batch_abc123",
  "status": "processing",
  "total_amount": 125000,
  "total_count": 2,
  "processed_count": 0,
  "successful_count": 0,
  "failed_count": 0,
  "pending_count": 2,
  "description": "Monthly salary batch",
  "reference": "SALARY_JAN_2024",
  "total_fees": 100,
  "transfers": [
    {
      "id": "txf_abc123",
      "status": "processing",
      "amount": 10000,
      "currency": "XOF",
      "recipient_phone": "+22507123456",
      "recipient_name": "DIALLO IBRAHIM",
      "channel": "mtnCI",
      "description": "Salary payment",
      "reference": "PAY_001",
      "ussd_reference": "MP240115.1032.T98765",
      "fees": 50,
      "metadata": {
        "employee_id": "EMP_123"
      },
      "created_at": "2024-01-15T10:30:00Z",
      "updated_at": "2024-01-15T10:30:00Z",
      "completed_at": null,
      "failure_reason": null
    }
  ],
  "created_at": "2024-01-15T10:00:00Z",
  "started_at": null,
  "completed_at": null
}