Get customer verification status

Example response

{
  "customerId": "cus_abc123",
  "sessions": [
    {
      "sessionId": "vs_abc123",
      "status": "PENDING",
      "createdAt": "2026-09-15T10:30:00Z",
      "expiresAt": "2026-10-15T10:30:00Z",
      "completedAt": "2026-09-20T10:30:00Z",
      "progressPercentage": 50,
      "completedSteps": [
        "personal_info"
      ],
      "requiredSteps": [
        "personal_info",
        "documents"
      ],
      "verificationUrl": "https://verify.infinite.dev/?sessionId=vsess_abc123"
    }
  ]
}